- home
- Advanced Search
- NEANIAS Atmospheric Research Community
- Open Access
- Publications
- Research data
- Preprint
- arXiv.org e-Print Archive
- NEANIAS Atmospheric Research Community
- Open Access
- Publications
- Research data
- Preprint
- arXiv.org e-Print Archive
Loading
description Publicationkeyboard_double_arrow_right Article , Preprint 2024 ItalyPublisher:Elsevier BV Authors: Nicola Scafetta;Nicola Scafetta;The IPCC AR6 assessment of the impacts and risks associated with projected climate changes for the 21st century is both alarming and ambiguous. According to computer projections, the global surface may warm from 1.3 to 8.0 {\deg}C by 2100, depending on the global climate model (GCM) and the shared socioeconomic pathway (SSP) scenario used for the simulations. However a substantial number of CMIP6 GCMs run "too hot" because they appear to be too sensitive to radiative forcing, and that the high/extreme emission scenarios SSP3-7.0 and SSP5-8.5 must be rejected because judged to be "unlikely" and "highly unlikely", respectively. This paper examines the impacts and risks of "realistic" climate change projections for the 21st century generated by assessing the theoretical models and integrating them with the existing empirical knowledge on global warming and the various natural cycles of climate change that have been recorded by a variety of scientists and historians. This is achieved by combining the "realistic" SSP2-4.5 scenario and empirically optimized climate modeling. The obtained climate projections show that the expected global surface warming for the 21st century will likely be mild, that is, no more than 2.5-3.0 {\deg}C and, on average, likely below the 2.0 {\deg}C threshold. This should allow for the mitigation and management of the most dangerous climate-change-related hazards through appropriate low-cost adaptation policies. In conclusion, enforcing expensive decarbonization and net-zero emission scenarios, such as SSP1-2.6, is not required because the Paris Agreement temperature target of keeping global warming below 2 {\deg}C throughout the 21st century should be compatible also with moderate and pragmatic shared socioeconomic pathways such as the SSP2-4.5. Comment: 36 pages, 9 figures, 5 tables
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.gsf.2023.101774&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.gsf.2023.101774&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Preprint 2024 FrancePublisher:Elsevier BV Funded by:EC | CAFEEC| CAFEAuthors: Starck, Thomas; Fardet, Tanguy; Esculier, Fabien;Starck, Thomas; Fardet, Tanguy; Esculier, Fabien;Nitrogen (N) is essential for plant growth and protein synthesis but global reactive N losses, mainly from food systems, induce strong environmental impacts.N losses after human excretion are often overlooked because, in Western societies, they partly occur as inert N2, following denitrification in wastewater treatment plants (WWTP), and losses in waters are often small compared to diffuse agricultural emissions.Yet N from human excretions could be used for crop fertilization, potentially with very high recycling rates via source separation.In this study we use unique operational data from the ~20,000 French WWTPs to produce a N mass-balance of excretions in the French sanitation system.Even though 75% of WWTPs' sludge is spread on crops, only 10% of the excreted N is recycled and 50% of N is lost to the atmosphere, mainly through WWTP nitrification-denitrification.The remaining 40% ends up in water or in diffuse losses in the ground, of which about half is lost outside of the WWTPs' discharge system, through sewers storm water and individual autonomous systems.While WWTPs removal efficiency increased in the 2000s, it has been followed by a decade of stagnation, reaching 70% at the national level.This national average hides regional discrepancies, from 60 to 85% in the 6 French water agencies basins.These differences closely correlate with the classification as ''N sensitive areas'' and is mainly due to large WWTPs which handle most of the N load.Recycling all N in excretions could supply 10% of domestic protein consumption in the current French food system, and up to 30% if it is prioritized towards crop production for human consumption.Redesigning the food system (decrease of nutrient losses, more plant-based diets) could further increase this contribution Comment: arXiv admin note: text overlap with arXiv:2310.06461
HAL Descartes; Mémoi... arrow_drop_down HAL Descartes; Mémoires en Sciences de l'Information et de la Communication; HAL-Ecole des Ponts ParisTechArticle . 2024License: CC BY SAFull-Text: https://hal.science/hal-04232722v2/documentThe Science of The Total EnvironmentArticle . 2024 . Peer-reviewedLicense: Elsevier TDMData sources: CrossrefHAL Descartes; Mémoires en Sciences de l'Information et de la CommunicationPreprint . 2023License: CC BY SAFull-Text: https://hal.science/hal-04232722/documenthttps://doi.org/10.48550/arxiv...Article . 2023License: arXiv Non-Exclusive DistributionData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.scitotenv.2023.168978&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert HAL Descartes; Mémoi... arrow_drop_down HAL Descartes; Mémoires en Sciences de l'Information et de la Communication; HAL-Ecole des Ponts ParisTechArticle . 2024License: CC BY SAFull-Text: https://hal.science/hal-04232722v2/documentThe Science of The Total EnvironmentArticle . 2024 . Peer-reviewedLicense: Elsevier TDMData sources: CrossrefHAL Descartes; Mémoires en Sciences de l'Information et de la CommunicationPreprint . 2023License: CC BY SAFull-Text: https://hal.science/hal-04232722/documenthttps://doi.org/10.48550/arxiv...Article . 2023License: arXiv Non-Exclusive DistributionData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.scitotenv.2023.168978&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Preprint 2024 GermanyPublisher:American Physical Society (APS) Funded by:NSF | Theoretical Particle Phys..., NSF | Graduate Research Fellows...NSF| Theoretical Particle Physics and Cosmology at UC Irvine ,NSF| Graduate Research Fellowship (GRFP)Authors: Fieg, Max; Kling, Felix; Schulz, Holger; Sjöstrand, Torbjörn;Fieg, Max; Kling, Felix; Schulz, Holger; Sjöstrand, Torbjörn;Event generators like Pythia play an important role in physics studies at the Large Hadron Collider (LHC). While they make accurate predictions in the central region, i.e. at pseudorapidities $\eta<5$, a disagreement between Pythia and measurements in the forward region, $\eta>7$, has been observed. We introduce a dedicated forward physics tune for the Pythia event generator to be used for forward physics studies at the LHC, which uses a more flexible modelling of beam remnant hadronization and is tuned to available particle spectra measured by LHCf. Furthermore, we provide an uncertainty estimate on the new tune in a data-driven way which can be used as a means of flux uncertainty for future forward physics studies. We demonstrate an application of our tune by showing the updated neutrino and dark photon spectra at the FASER experiment. Physical review / D 109(1), 016010 (2024). doi:10.1103/PhysRevD.109.016010 Published by American Physical Society, Ridge, NY
DESY Publication Dat... arrow_drop_down https://doi.org/10.1103/physre...Article . 2024 . Peer-reviewedLicense: CC BYData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1103/physrevd.109.016010&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert DESY Publication Dat... arrow_drop_down https://doi.org/10.1103/physre...Article . 2024 . Peer-reviewedLicense: CC BYData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1103/physrevd.109.016010&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Preprint 2024 Germany EnglishAcharyya, A.; Aufdenberg, J. P.; Furniss, A.; Hanlon, W.; Hinrichs, C. E.; Holder, J.; Jin, W.; Kaaret, P.; Kertzman, M.; Kieda, D.; Kleiner, T. K.; Korzoun, N.; Bangale, P.; LeBohec, T.; Lisa, M. A.; Lundy, M.; Matthews, N.; McGrath, C. E.; Millard, M. J.; Moriarty, P.; Nikkhah, S.; O'Brien, S.; Ong, R. A.; Bartkoske, J. T.; Pohl, M.; Pueschel, E.; Quinn, J.; Rabinowitz, P. L.; Ragan, K.; Roache, E.; Rose, J. G.; Sackrider, J. L.; Sadeh, I.; Saha, L.; Batista, P.; Sembroski, G. H.; Shang, R.; Tak, D.; Ticoras, M.; Tucci, J. V.; Wong, S. L.; VERITAS Collaboration; Benbow, W.; Chromey, A. J.; Davis, J. D.; Feng, Q.; Foote, G. M.;International audience; We use the VERITAS imaging air Cherenkov Telescope (IACT) array to obtain the first measured angular diameter of $\beta$ UMa at visual wavelengths using stellar intensity interferometry (SII) and independently constrain the limb-darkened angular diameter. The age of the Ursa Major moving group has been assessed from the ages of its members, including nuclear member Merak ($\beta$ UMa), an A1-type subgiant, by comparing effective temperature and luminosity constraints to model stellar evolution tracks. Previous interferometric limb-darkened angular-diameter measurements of $\beta$ UMa in the near-infrared (CHARA Array, $1.149 \pm 0.014$ mas) and mid-infrared (Keck Nuller, $1.08 \pm 0.07$ mas), together with the measured parallax and bolometric flux, have constrained the effective temperature. This paper presents current VERITAS-SII observation and analysis procedures to derive squared visibilities from correlation functions. We fit the resulting squared visibilities to find a limb-darkened angular diameter of $1.07 \pm 0.04 {\rm (stat)} \pm 0.05$ (sys) mas, using synthetic visibilities from a stellar atmosphere model that provides a good match to the spectrum of $\beta$ UMa in the optical wave band. The VERITAS-SII limb-darkened angular diameter yields an effective temperature of $9700\pm200\pm 200$ K, consistent with ultraviolet spectrophotometry, and an age of $390\pm 29 \pm 32 $ Myr, using MESA Isochrones and Stellar Tracks (MIST). This age is consistent with $408 \pm 6$ Myr from the CHARA Array angular diameter.
All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od_______212::46aaa4df90529ae14cf31c5359e4a5a4&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od_______212::46aaa4df90529ae14cf31c5359e4a5a4&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Preprint 2024 GermanyPublisher:IOP Publishing Funded by:NSF | Pierre Auger Project, ANR | SUPERNSF| Pierre Auger Project ,ANR| SUPERCollaboration, Pierre Auger; Abdul Halim, A.; Abreu, P.; Aglietta, M.; Allekotte, I.; Almeida Cheminant, K.; Almela, A.; Aloisio, R.; Alvarez-Muñiz, J.; Ammerman Yebra, J.; Anastasi, G. A.; Anchordoqui, L.; Andrada, B.; Andringa, S.; Aramo, C.; Araújo Ferreira, P. R.; Arnone, E.; Arteaga Velázquez, J. C.; Asorey, H.; Assis, P.; Avila, G.; Avocone, E.; Badescu, A. M.; Bakalova, A.; Balaceanu, A.; Barbato, F.; Bartz Mocellin, A.; Bellido, J. A.; Berat, C.; Bertaina, M. E.; Bhatta, G.; Bianciotto, M.; Biermann, P. L.; Binet, V.; Bismark, K.; Bister, T.; Biteau, J.; Blazek, J.; Bleve, C.; Blümer, J.; Boháčová, M.; Boncioli, D.; Bonifazi, C.; Bonneau Arbeletche, L.; Borodai, N.; Brack, J.; Brichetto Orchera, P. G.; Briechle, F. L.; Bueno, A.; Buitink, S.; Buscemi, M.; Büsken, M.; Bwembya, A.; Caballero-Mora, K. S.; Caccianiga, L.; Caracas, I.; Caruso, R.; Castellina, A.; Catalani, F.; Cataldi, G.; Cazon, L.; Cerda, M.; Chinellato, J. A.; Chudoba, J.; Chytka, L.; Clay, R. W.; Cobos Cerutti, A. C.; Colalillo, R.; Coleman, A.; Coluccia, M. R.; Conceição, R.; Condorelli, A.; Consolati, G.; Conte, M.; Convenga, F.; Correia Dos Santos, D.; Costa, P. J.; Covault, C. E.; Cristinziani, M.; Cruz Sanchez, C. S.; Dasso, S.; Daumiller, K.; Dawson, B. R.; De Almeida, R. M.; De Jesús, J.; De Jong, S. J.; De Mello Neto, J. R. T.; De Mitri, I.; De Oliveira, J.; De Oliveira Franco, D.; De Palma, F.; De Souza, V.; De Vito, E.; Del Popolo, A.; Deligny, O.; Deval, L.; Di Matteo, A.; Dobre, M.; Dobrigkeit, C.; D'Olivo, J. C.; Domingues Mendes, L. M.; Dos Anjos, J. C.; Dos Anjos, R. C.; Ebr, J.; Ellwanger, F.; Emam, M.; Engel, R.; Epicoco, I.; Erdmann, M.; Etchegoyen, A.; Evoli, C.; Falcke, H.; Farmer, J.; Farrar, G.; Fauth, A. C.; Fazzini, N.; Feldbusch, F.; Fenu, F.; Fernandes, A.; Fick, B.; Figueira, J. M.; Filipčič, A.; Fitoussi, T.; Flaggs, B.; Fodran, T.; Fujii, T.; Fuster, A.; Galea, C.; Galelli, C.; García, B.; Gaudu, C.; Gemmeke, H.; Gesualdi, F.; Gherghel-Lascu, A.; Ghia, P. L.; Giaccari, U.; Giammarchi, M.; Glombitza, J.; Gobbi, F.; Gollan, F.; Golup, G.; Gómez Berisso, M.; Gómez Vitale, P. F.; Gongora, J. P.; González, J. M.; González, N.; Goos, I.; Góra, D.; Gorgi, A.; Gottowik, M.; Grubb, T. D.; Guarino, F.; Guedes, G. P.; Guido, E.; Hahn, S.; Hamal, P.; Hampel, M. R.; Hansen, P.; Harari, D.; Harvey, V. M.; Haungs, A.; Hebbeker, T.; Hojvat, C.; Hörandel, J. R.; Horvath, P.; Hrabovský, M.; Huege, T.; Insolia, A.; Isar, P. G.; Janecek, P.; Johnsen, J. A.; Jurysek, J.; Kääpä, A.; Kampert, K. H.; Keilhauer, B.; Khakurdikar, A.; Kizakke Covilakam, V. V.; Klages, H. O.; Kleifges, M.; Knapp, F.; Kunka, N.; Lago, B. L.; Langner, N.; Leigui De Oliveira, M. A.; Lema-Capeans, Y.; Lenok, V.; Letessier-Selvon, A.; Lhenry-Yvon, I.; Lo Presti, D.; Lopes, L.; Lu, L.; Luce, Q.; Lundquist, J. P.; Machado Payeras, A.; Majercakova, M.; Mandat, D.; Manning, B. C.; Mantsch, P.; Marafico, S.; Mariani, F. M.;Abstract The combined fit of the measured energy spectrum and shower maximum depth distributions of ultra-high-energy cosmic rays is known to constrain the parameters of astrophysical models with homogeneous source distributions. Studies of the distribution of the cosmic-ray arrival directions show a better agreement with models in which a fraction of the flux is non-isotropic and associated with the nearby radio galaxy Centaurus A or with catalogs such as that of starburst galaxies. Here, we present a novel combination of both analyses by a simultaneous fit of arrival directions, energy spectrum, and composition data measured at the Pierre Auger Observatory. The model takes into account a rigidity-dependent magnetic field blurring and an energy-dependent evolution of the catalog contribution shaped by interactions during propagation. We find that a model containing a flux contribution from the starburst galaxy catalog of around 20% at 40 EeV with a magnetic field blurring of around 20° for a rigidity of 10 EV provides a fair simultaneous description of all three observables. The starburst galaxy model is favored with a significance of 4.5σ (considering experimental systematic effects) compared to a reference model with only homogeneously distributed background sources. By investigating a scenario with Centaurus A as a single source in combination with the homogeneous background, we confirm that this region of the sky provides the dominant contribution to the observed anisotropy signal. Models containing a catalog of jetted active galactic nuclei whose flux scales with the γ-ray emission are, however, disfavored as they cannot adequately describe the measured arrival directions.
Journal of Cosmology... arrow_drop_down Journal of Cosmology and Astroparticle PhysicsArticle . 2024 . Peer-reviewedLicense: CC BYData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1088/1475-7516/2024/01/022&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert Journal of Cosmology... arrow_drop_down Journal of Cosmology and Astroparticle PhysicsArticle . 2024 . Peer-reviewedLicense: CC BYData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1088/1475-7516/2024/01/022&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Preprint 2024 FrancePublisher:Springer Science and Business Media LLC Funded by:EC | QBH Structure, EC | Stringlandscape, EC | StringyGeometry +1 projectsEC| QBH Structure ,EC| Stringlandscape ,EC| StringyGeometry ,NSF| Exploring the Topography of String Theory and Quantum Field TheoryAuthors: Anthony Ashmore; Ruben Minasian; Yann Proto;Anthony Ashmore; Ruben Minasian; Yann Proto;We study the relation between supersymmetry and geometric flows driven by the Bianchi identity for the three-form flux $H$ in heterotic supergravity. We describe how the flow equations can be derived from a functional that appears in a rewriting of the bosonic action in terms of squares of supersymmetry operators. On a complex threefold, the resulting equations match what is known in the mathematics literature as "anomaly flow". We generalise this to seven- and eight-manifolds with G$_2$ or Spin(7) structures and discuss examples where the manifold is a torus fibration over a K3 surface. In the latter cases, the flow simplifies to a single scalar equation, with the existence of the supergravity solution implied by the long-time existence and convergence of the flow. We also comment on the $\alpha'$ expansion and highlight the importance of using the proper connection in the Bianchi identity to ensure that the flow's fixed points satisfy the supergravity equations of motion. Comment: 47 pages plus appendices
arXiv.org e-Print Ar... arrow_drop_down Communications in Mathematical PhysicsArticle . 2024 . Peer-reviewedLicense: Springer Nature TDMData sources: CrossrefMémoires en Sciences de l'Information et de la Communication; HAL-CEAArticle . Preprint . 2024 . 2023https://doi.org/10.48550/arxiv...Article . 2023License: arXiv Non-Exclusive DistributionData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1007/s00220-023-04910-7&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert arXiv.org e-Print Ar... arrow_drop_down Communications in Mathematical PhysicsArticle . 2024 . Peer-reviewedLicense: Springer Nature TDMData sources: CrossrefMémoires en Sciences de l'Information et de la Communication; HAL-CEAArticle . Preprint . 2024 . 2023https://doi.org/10.48550/arxiv...Article . 2023License: arXiv Non-Exclusive DistributionData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1007/s00220-023-04910-7&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Preprint , Article 2024Publisher:IOP Publishing Scott Geraedts; Erica Brand; Thomas R Dean; Sebastian Eastham; Carl Elkin; Zebediah Engberg; Ulrike Hager; Ian Langmore; Kevin McCloskey; Joe Yue-Hei Ng; John C Platt; Tharun Sankar; Aaron Sarna; Marc Shapiro; Nita Goyal;Persistent contrails make up a large fraction of aviation's contribution to global warming. We describe a scalable, automated detection and matching (ADM) system to determine from satellite data whether a flight has made a persistent contrail. The ADM system compares flight segments to contrails detected by a computer vision algorithm running on images from the GOES-16 Advanced Baseline Imager. We develop a 'flight matching' algorithm and use it to label each flight segment as a 'match' or 'non-match'. We perform this analysis on 1.6 million flight segments. The result is an analysis of which flights make persistent contrails several orders of magnitude larger than any previous work. We assess the agreement between our labels and available prediction models based on weather forecasts. Shifting air traffic to avoid regions of contrail formation has been proposed as a possible mitigation with the potential for very low cost/ton-CO2e. Our findings suggest that imperfections in these prediction models increase this cost/ton by about an order of magnitude. Contrail avoidance is a cost-effective climate change mitigation even with this factor taken into account, but our results quantify the need for more accurate contrail prediction methods and establish a benchmark for future development. 17 pages, 6 figures
arXiv.org e-Print Ar... arrow_drop_down Environmental Research CommunicationsArticle . 2024 . Peer-reviewedLicense: CC BYData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1088/2515-7620/ad11ab&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert arXiv.org e-Print Ar... arrow_drop_down Environmental Research CommunicationsArticle . 2024 . Peer-reviewedLicense: CC BYData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1088/2515-7620/ad11ab&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Preprint , Article 2024Embargo end date: 01 Jan 2024 FrancePublisher:arXiv Authors: Collaboration, H. E. S. S.; Aharonian, F.; Benkhali, F. Ait; Aschersleben, J.; +138 AuthorsCollaboration, H. E. S. S.; Aharonian, F.; Benkhali, F. Ait; Aschersleben, J.; Ashkar, H.; Backes, M.; Baktash, A.; Martins, V. Barbosa; Barnard, J.; Batzofin, R.; Becherini, Y.; Berge, D.; Bernlöhr, K.; Bi, B.; Böttcher, M.; Boisson, C.; Bolmont, J.; de Lavergne, M. de Bony; Borowska, J.; Bradascio, F.; Breuhaus, M.; Brose, R.; Brown, A.; Brun, F.; Bruno, B.; Bulik, T.; Burger-Scheidlin, C.; Bylund, T.; Caroff, S.; Casanova, S.; Cecil, R.; Celic, J.; Cerruti, M.; Chand, T.; Chandra, S.; Chen, A.; Chibueze, J.; Chibueze, O.; Cotter, G.; Mbarubucyeye, J. Damascene; Davids, I. D.; Djuvsland, J.; Dmytriiev, A.; Doroshenko, V.; Egberts, K.; Einecke, S.; Ernenwein, J. -P.; Fontaine, G.; Füßling, M.; Funk, S.; Gabici, S.; Ghafourizadeh, S.; Giavitto, G.; Glawion, D.; Glicenstein, J. F.; Glombitza, J.; Goswami, P.; Grolleron, G.; Haerer, L.; Hinton, J. A.; Holch, T. L.; Holler, M.; Horns, D.; Jamrozy, M.; Jankowsky, F.; Joshi, V.; Jung-Richardt, I.; Kasai, E.; Katarzyński, K.; Khatoon, R.; Kh'elifi, B.; z; niak; Komin, Nu.; Kosack, K.; Kostunin, D.; Lang, R. G.; Stum, S. Le; Leitl, F.; Lemière, A.; Lenain, J. -P.; Leuschner, F.; Luashvili, A.; Mackey, J.; Marx, R.; Mehta, A.; Meyer, M.; Mitchell, A.; Moderski, R.; Montanari, A.; Moulin, E.; de Naurois, M.; Niemiec, J.; O'Brien, P.; Ohm, S.; Olivera-Nieto, L.; Wilhelmi, E. de Ona; Ostrowski, M.; Panny, S.; Parsons, R. D.; Pita, S.; Prokhorov, D. A.; Pühlhofer, G.; Punch, M.; Quirrenbach, A.; Reichherzer, P.; Reimer, A.; Reimer, O.; Ren, H.; Rieger, F.; Rudak, B.; Sahakian, V.; Salzmann, H.; Sanchez, D. A.; Sasaki, M.; Schüssler, F.; Schutte, H. M.; Shapopi, J. N. S.; Sol, H.; Specovius, A.; Spencer, S.; L.; Stawarz; Steenkamp, R.; Steinmassl, S.; Streil, K.; Sushch, I.; Suzuki, H.; Takahashi, T.; Tanaka, T.; van Eldik, C.; Vecchi, M.; Veh, J.; Venter, C.; Wagner, S. J.; Wierzcholska, A.; Zacharias, M.; Zargaryan, D.; Zdziarski, A. A.; Zech, A.; Zouari, S.; Żywucka, N.;Most $\gamma$-ray detected active galactic nuclei are blazars with one of their relativistic jets pointing towards the Earth. Only a few objects belong to the class of radio galaxies or misaligned blazars. Here, we investigate the nature of the object PKS 0625-354, its $\gamma$-ray flux and spectral variability and its broad-band spectral emission with observations from H.E.S.S., Fermi-LAT, Swift-XRT, and UVOT taken in November 2018. The H.E.S.S. light curve above 200 GeV shows an outburst in the first night of observations followed by a declining flux with a halving time scale of 5.9h. The $\gamma\gamma$-opacity constrains the upper limit of the angle between the jet and the line of sight to $\sim10^\circ$. The broad-band spectral energy distribution shows two humps and can be well fitted with a single-zone synchrotron self Compton emission model. We conclude that PKS 0625-354, as an object showing clear features of both blazars and radio galaxies, can be classified as an intermediate active galactic nuclei. Multi-wavelength studies of such intermediate objects exhibiting features of both blazars and radio galaxies are sparse but crucial for the understanding of the broad-band emission of $\gamma$-ray detected active galactic nuclei in general. Comment: 9 pages, 6 figures, accepted for publication in Astronomy & Astrophysics
arXiv.org e-Print Ar... arrow_drop_down https://doi.org/10.48550/arxiv...Article . 2024License: arXiv Non-Exclusive DistributionData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.48550/arxiv.2401.07071&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert arXiv.org e-Print Ar... arrow_drop_down https://doi.org/10.48550/arxiv...Article . 2024License: arXiv Non-Exclusive DistributionData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.48550/arxiv.2401.07071&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Preprint 2024Publisher:Elsevier BV Tolan, Jamie; Yang, Hung-I; Nosarzewski, Ben; Couairon, Guillaume; Vo, Huy; Brandt, John; Spore, Justine; Majumdar, Sayantan; Haziza, Daniel; Vamaraju, Janaki; Moutakanni, Theo; Bojanowski, Piotr; Johns, Tracy; White, Brian; Tiecke, Tobias; Couprie, Camille;Vegetation structure mapping is critical for understanding the global carbon cycle and monitoring nature-based approaches to climate adaptation and mitigation. Repeated measurements of these data allow for the observation of deforestation or degradation of existing forests, natural forest regeneration, and the implementation of sustainable agricultural practices like agroforestry. Assessments of tree canopy height and crown projected area at a high spatial resolution are also important for monitoring carbon fluxes and assessing tree-based land uses, since forest structures can be highly spatially heterogeneous, especially in agroforestry systems. Very high resolution satellite imagery (less than one meter (1m) Ground Sample Distance) makes it possible to extract information at the tree level while allowing monitoring at a very large scale. This paper presents the first high-resolution canopy height map concurrently produced for multiple sub-national jurisdictions. Specifically, we produce very high resolution canopy height maps for the states of California and Sao Paulo, a significant improvement in resolution over the ten meter (10m) resolution of previous Sentinel / GEDI based worldwide maps of canopy height. The maps are generated by the extraction of features from a self-supervised model trained on Maxar imagery from 2017 to 2020, and the training of a dense prediction decoder against aerial lidar maps. We also introduce a post-processing step using a convolutional network trained on GEDI observations. We evaluate the proposed maps with set-aside validation lidar data as well as by comparing with other remotely sensed maps and field-collected data, and find our model produces an average Mean Absolute Error (MAE) of 2.8 meters and Mean Error (ME) of 0.6 meters.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.rse.2023.113888&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.rse.2023.113888&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Preprint 2024 United StatesPublisher:Elsevier BV Authors: Geoff Boeing; Clemens Pilgram; Yougeng Lu;Geoff Boeing; Clemens Pilgram; Yougeng Lu;This study estimates the relationships between street network characteristics and transport-sector CO2 emissions across every urban area in the world and investigates whether they are the same across development levels and urban design paradigms. The prior literature has estimated relationships between street network design and transport emissions---including greenhouse gases implicated in climate change---primarily through case studies focusing on certain world regions or relatively small samples of cities, complicating generalizability and applicability for evidence-informed practice. Our worldwide study finds that straighter, more-connected, and less-overbuilt street networks are associated with lower transport emissions, all else equal. Importantly, these relationships vary across development levels and design paradigms---yet most prior literature reports findings from urban areas that are outliers by global standards. Planners need a better empirical base for evidence-informed practice in under-studied regions, particularly the rapidly urbanizing Global South.
https://doi.org/10.3... arrow_drop_down eScholarship - University of CaliforniaArticle . 2024Data sources: eScholarship - University of CaliforniaTransportation Research Part D Transport and EnvironmentArticle . 2024 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.2139/ssrn.4682232&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert https://doi.org/10.3... arrow_drop_down eScholarship - University of CaliforniaArticle . 2024Data sources: eScholarship - University of CaliforniaTransportation Research Part D Transport and EnvironmentArticle . 2024 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.2139/ssrn.4682232&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu
Loading
description Publicationkeyboard_double_arrow_right Article , Preprint 2024 ItalyPublisher:Elsevier BV Authors: Nicola Scafetta;Nicola Scafetta;The IPCC AR6 assessment of the impacts and risks associated with projected climate changes for the 21st century is both alarming and ambiguous. According to computer projections, the global surface may warm from 1.3 to 8.0 {\deg}C by 2100, depending on the global climate model (GCM) and the shared socioeconomic pathway (SSP) scenario used for the simulations. However a substantial number of CMIP6 GCMs run "too hot" because they appear to be too sensitive to radiative forcing, and that the high/extreme emission scenarios SSP3-7.0 and SSP5-8.5 must be rejected because judged to be "unlikely" and "highly unlikely", respectively. This paper examines the impacts and risks of "realistic" climate change projections for the 21st century generated by assessing the theoretical models and integrating them with the existing empirical knowledge on global warming and the various natural cycles of climate change that have been recorded by a variety of scientists and historians. This is achieved by combining the "realistic" SSP2-4.5 scenario and empirically optimized climate modeling. The obtained climate projections show that the expected global surface warming for the 21st century will likely be mild, that is, no more than 2.5-3.0 {\deg}C and, on average, likely below the 2.0 {\deg}C threshold. This should allow for the mitigation and management of the most dangerous climate-change-related hazards through appropriate low-cost adaptation policies. In conclusion, enforcing expensive decarbonization and net-zero emission scenarios, such as SSP1-2.6, is not required because the Paris Agreement temperature target of keeping global warming below 2 {\deg}C throughout the 21st century should be compatible also with moderate and pragmatic shared socioeconomic pathways such as the SSP2-4.5. Comment: 36 pages, 9 figures, 5 tables
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.gsf.2023.101774&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.gsf.2023.101774&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Preprint 2024 FrancePublisher:Elsevier BV Funded by:EC | CAFEEC| CAFEAuthors: Starck, Thomas; Fardet, Tanguy; Esculier, Fabien;Starck, Thomas; Fardet, Tanguy; Esculier, Fabien;Nitrogen (N) is essential for plant growth and protein synthesis but global reactive N losses, mainly from food systems, induce strong environmental impacts.N losses after human excretion are often overlooked because, in Western societies, they partly occur as inert N2, following denitrification in wastewater treatment plants (WWTP), and losses in waters are often small compared to diffuse agricultural emissions.Yet N from human excretions could be used for crop fertilization, potentially with very high recycling rates via source separation.In this study we use unique operational data from the ~20,000 French WWTPs to produce a N mass-balance of excretions in the French sanitation system.Even though 75% of WWTPs' sludge is spread on crops, only 10% of the excreted N is recycled and 50% of N is lost to the atmosphere, mainly through WWTP nitrification-denitrification.The remaining 40% ends up in water or in diffuse losses in the ground, of which about half is lost outside of the WWTPs' discharge system, through sewers storm water and individual autonomous systems.While WWTPs removal efficiency increased in the 2000s, it has been followed by a decade of stagnation, reaching 70% at the national level.This national average hides regional discrepancies, from 60 to 85% in the 6 French water agencies basins.These differences closely correlate with the classification as ''N sensitive areas'' and is mainly due to large WWTPs which handle most of the N load.Recycling all N in excretions could supply 10% of domestic protein consumption in the current French food system, and up to 30% if it is prioritized towards crop production for human consumption.Redesigning the food system (decrease of nutrient losses, more plant-based diets) could further increase this contribution Comment: arXiv admin note: text overlap with arXiv:2310.06461
HAL Descartes; Mémoi... arrow_drop_down HAL Descartes; Mémoires en Sciences de l'Information et de la Communication; HAL-Ecole des Ponts ParisTechArticle . 2024License: CC BY SAFull-Text: https://hal.science/hal-04232722v2/documentThe Science of The Total EnvironmentArticle . 2024 . Peer-reviewedLicense: Elsevier TDMData sources: CrossrefHAL Descartes; Mémoires en Sciences de l'Information et de la CommunicationPreprint . 2023License: CC BY SAFull-Text: https://hal.science/hal-04232722/documenthttps://doi.org/10.48550/arxiv...Article . 2023License: arXiv Non-Exclusive DistributionData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.scitotenv.2023.168978&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert HAL Descartes; Mémoi... arrow_drop_down HAL Descartes; Mémoires en Sciences de l'Information et de la Communication; HAL-Ecole des Ponts ParisTechArticle . 2024License: CC BY SAFull-Text: https://hal.science/hal-04232722v2/documentThe Science of The Total EnvironmentArticle . 2024 . Peer-reviewedLicense: Elsevier TDMData sources: CrossrefHAL Descartes; Mémoires en Sciences de l'Information et de la CommunicationPreprint . 2023License: CC BY SAFull-Text: https://hal.science/hal-04232722/documenthttps://doi.org/10.48550/arxiv...Article . 2023License: arXiv Non-Exclusive DistributionData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.scitotenv.2023.168978&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Preprint 2024 GermanyPublisher:American Physical Society (APS) Funded by:NSF | Theoretical Particle Phys..., NSF | Graduate Research Fellows...NSF| Theoretical Particle Physics and Cosmology at UC Irvine ,NSF| Graduate Research Fellowship (GRFP)Authors: Fieg, Max; Kling, Felix; Schulz, Holger; Sjöstrand, Torbjörn;Fieg, Max; Kling, Felix; Schulz, Holger; Sjöstrand, Torbjörn;Event generators like Pythia play an important role in physics studies at the Large Hadron Collider (LHC). While they make accurate predictions in the central region, i.e. at pseudorapidities $\eta<5$, a disagreement between Pythia and measurements in the forward region, $\eta>7$, has been observed. We introduce a dedicated forward physics tune for the Pythia event generator to be used for forward physics studies at the LHC, which uses a more flexible modelling of beam remnant hadronization and is tuned to available particle spectra measured by LHCf. Furthermore, we provide an uncertainty estimate on the new tune in a data-driven way which can be used as a means of flux uncertainty for future forward physics studies. We demonstrate an application of our tune by showing the updated neutrino and dark photon spectra at the FASER experiment. Physical review / D 109(1), 016010 (2024). doi:10.1103/PhysRevD.109.016010 Published by American Physical Society, Ridge, NY
DESY Publication Dat... arrow_drop_down https://doi.org/10.1103/physre...Article . 2024 . Peer-reviewedLicense: CC BYData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1103/physrevd.109.016010&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert DESY Publication Dat... arrow_drop_down https://doi.org/10.1103/physre...Article . 2024 . Peer-reviewedLicense: CC BYData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1103/physrevd.109.016010&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Preprint 2024 Germany EnglishAcharyya, A.; Aufdenberg, J. P.; Furniss, A.; Hanlon, W.; Hinrichs, C. E.; Holder, J.; Jin, W.; Kaaret, P.; Kertzman, M.; Kieda, D.; Kleiner, T. K.; Korzoun, N.; Bangale, P.; LeBohec, T.; Lisa, M. A.; Lundy, M.; Matthews, N.; McGrath, C. E.; Millard, M. J.; Moriarty, P.; Nikkhah, S.; O'Brien, S.; Ong, R. A.; Bartkoske, J. T.; Pohl, M.; Pueschel, E.; Quinn, J.; Rabinowitz, P. L.; Ragan, K.; Roache, E.; Rose, J. G.; Sackrider, J. L.; Sadeh, I.; Saha, L.; Batista, P.; Sembroski, G. H.; Shang, R.; Tak, D.; Ticoras, M.; Tucci, J. V.; Wong, S. L.; VERITAS Collaboration; Benbow, W.; Chromey, A. J.; Davis, J. D.; Feng, Q.; Foote, G. M.;International audience; We use the VERITAS imaging air Cherenkov Telescope (IACT) array to obtain the first measured angular diameter of $\beta$ UMa at visual wavelengths using stellar intensity interferometry (SII) and independently constrain the limb-darkened angular diameter. The age of the Ursa Major moving group has been assessed from the ages of its members, including nuclear member Merak ($\beta$ UMa), an A1-type subgiant, by comparing effective temperature and luminosity constraints to model stellar evolution tracks. Previous interferometric limb-darkened angular-diameter measurements of $\beta$ UMa in the near-infrared (CHARA Array, $1.149 \pm 0.014$ mas) and mid-infrared (Keck Nuller, $1.08 \pm 0.07$ mas), together with the measured parallax and bolometric flux, have constrained the effective temperature. This paper presents current VERITAS-SII observation and analysis procedures to derive squared visibilities from correlation functions. We fit the resulting squared visibilities to find a limb-darkened angular diameter of $1.07 \pm 0.04 {\rm (stat)} \pm 0.05$ (sys) mas, using synthetic visibilities from a stellar atmosphere model that provides a good match to the spectrum of $\beta$ UMa in the optical wave band. The VERITAS-SII limb-darkened angular diameter yields an effective temperature of $9700\pm200\pm 200$ K, consistent with ultraviolet spectrophotometry, and an age of $390\pm 29 \pm 32 $ Myr, using MESA Isochrones and Stellar Tracks (MIST). This age is consistent with $408 \pm 6$ Myr from the CHARA Array angular diameter.
All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od_______212::46aaa4df90529ae14cf31c5359e4a5a4&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od_______212::46aaa4df90529ae14cf31c5359e4a5a4&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Preprint 2024 GermanyPublisher:IOP Publishing Funded by:NSF | Pierre Auger Project, ANR | SUPERNSF| Pierre Auger Project ,ANR| SUPERCollaboration, Pierre Auger; Abdul Halim, A.; Abreu, P.; Aglietta, M.; Allekotte, I.; Almeida Cheminant, K.; Almela, A.; Aloisio, R.; Alvarez-Muñiz, J.; Ammerman Yebra, J.; Anastasi, G. A.; Anchordoqui, L.; Andrada, B.; Andringa, S.; Aramo, C.; Araújo Ferreira, P. R.; Arnone, E.; Arteaga Velázquez, J. C.; Asorey, H.; Assis, P.; Avila, G.; Avocone, E.; Badescu, A. M.; Bakalova, A.; Balaceanu, A.; Barbato, F.; Bartz Mocellin, A.; Bellido, J. A.; Berat, C.; Bertaina, M. E.; Bhatta, G.; Bianciotto, M.; Biermann, P. L.; Binet, V.; Bismark, K.; Bister, T.; Biteau, J.; Blazek, J.; Bleve, C.; Blümer, J.; Boháčová, M.; Boncioli, D.; Bonifazi, C.; Bonneau Arbeletche, L.; Borodai, N.; Brack, J.; Brichetto Orchera, P. G.; Briechle, F. L.; Bueno, A.; Buitink, S.; Buscemi, M.; Büsken, M.; Bwembya, A.; Caballero-Mora, K. S.; Caccianiga, L.; Caracas, I.; Caruso, R.; Castellina, A.; Catalani, F.; Cataldi, G.; Cazon, L.; Cerda, M.; Chinellato, J. A.; Chudoba, J.; Chytka, L.; Clay, R. W.; Cobos Cerutti, A. C.; Colalillo, R.; Coleman, A.; Coluccia, M. R.; Conceição, R.; Condorelli, A.; Consolati, G.; Conte, M.; Convenga, F.; Correia Dos Santos, D.; Costa, P. J.; Covault, C. E.; Cristinziani, M.; Cruz Sanchez, C. S.; Dasso, S.; Daumiller, K.; Dawson, B. R.; De Almeida, R. M.; De Jesús, J.; De Jong, S. J.; De Mello Neto, J. R. T.; De Mitri, I.; De Oliveira, J.; De Oliveira Franco, D.; De Palma, F.; De Souza, V.; De Vito, E.; Del Popolo, A.; Deligny, O.; Deval, L.; Di Matteo, A.; Dobre, M.; Dobrigkeit, C.; D'Olivo, J. C.; Domingues Mendes, L. M.; Dos Anjos, J. C.; Dos Anjos, R. C.; Ebr, J.; Ellwanger, F.; Emam, M.; Engel, R.; Epicoco, I.; Erdmann, M.; Etchegoyen, A.; Evoli, C.; Falcke, H.; Farmer, J.; Farrar, G.; Fauth, A. C.; Fazzini, N.; Feldbusch, F.; Fenu, F.; Fernandes, A.; Fick, B.; Figueira, J. M.; Filipčič, A.; Fitoussi, T.; Flaggs, B.; Fodran, T.; Fujii, T.; Fuster, A.; Galea, C.; Galelli, C.; García, B.; Gaudu, C.; Gemmeke, H.; Gesualdi, F.; Gherghel-Lascu, A.; Ghia, P. L.; Giaccari, U.; Giammarchi, M.; Glombitza, J.; Gobbi, F.; Gollan, F.; Golup, G.; Gómez Berisso, M.; Gómez Vitale, P. F.; Gongora, J. P.; González, J. M.; González, N.; Goos, I.; Góra, D.; Gorgi, A.; Gottowik, M.; Grubb, T. D.; Guarino, F.; Guedes, G. P.; Guido, E.; Hahn, S.; Hamal, P.; Hampel, M. R.; Hansen, P.; Harari, D.; Harvey, V. M.; Haungs, A.; Hebbeker, T.; Hojvat, C.; Hörandel, J. R.; Horvath, P.; Hrabovský, M.; Huege, T.; Insolia, A.; Isar, P. G.; Janecek, P.; Johnsen, J. A.; Jurysek, J.; Kääpä, A.; Kampert, K. H.; Keilhauer, B.; Khakurdikar, A.; Kizakke Covilakam, V. V.; Klages, H. O.; Kleifges, M.; Knapp, F.; Kunka, N.; Lago, B. L.; Langner, N.; Leigui De Oliveira, M. A.; Lema-Capeans, Y.; Lenok, V.; Letessier-Selvon, A.; Lhenry-Yvon, I.; Lo Presti, D.; Lopes, L.; Lu, L.; Luce, Q.; Lundquist, J. P.; Machado Payeras, A.; Majercakova, M.; Mandat, D.; Manning, B. C.; Mantsch, P.; Marafico, S.; Mariani, F. M.;Abstract The combined fit of the measured energy spectrum and shower maximum depth distributions of ultra-high-energy cosmic rays is known to constrain the parameters of astrophysical models with homogeneous source distributions. Studies of the distribution of the cosmic-ray arrival directions show a better agreement with models in which a fraction of the flux is non-isotropic and associated with the nearby radio galaxy Centaurus A or with catalogs such as that of starburst galaxies. Here, we present a novel combination of both analyses by a simultaneous fit of arrival directions, energy spectrum, and composition data measured at the Pierre Auger Observatory. The model takes into account a rigidity-dependent magnetic field blurring and an energy-dependent evolution of the catalog contribution shaped by interactions during propagation. We find that a model containing a flux contribution from the starburst galaxy catalog of around 20% at 40 EeV with a magnetic field blurring of around 20° for a rigidity of 10 EV provides a fair simultaneous description of all three observables. The starburst galaxy model is favored with a significance of 4.5σ (considering experimental systematic effects) compared to a reference model with only homogeneously distributed background sources. By investigating a scenario with Centaurus A as a single source in combination with the homogeneous background, we confirm that this region of the sky provides the dominant contribution to the observed anisotropy signal. Models containing a catalog of jetted active galactic nuclei whose flux scales with the γ-ray emission are, however, disfavored as they cannot adequately describe the measured arrival directions.
Journal of Cosmology... arrow_drop_down Journal of Cosmology and Astroparticle PhysicsArticle . 2024 . Peer-reviewedLicense: CC BYData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1088/1475-7516/2024/01/022&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert Journal of Cosmology... arrow_drop_down Journal of Cosmology and Astroparticle PhysicsArticle . 2024 . Peer-reviewedLicense: CC BYData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1088/1475-7516/2024/01/022&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Preprint 2024 FrancePublisher:Springer Science and Business Media LLC Funded by:EC | QBH Structure, EC | Stringlandscape, EC | StringyGeometry +1 projectsEC| QBH Structure ,EC| Stringlandscape ,EC| StringyGeometry ,NSF| Exploring the Topography of String Theory and Quantum Field TheoryAuthors: Anthony Ashmore; Ruben Minasian; Yann Proto;Anthony Ashmore; Ruben Minasian; Yann Proto;We study the relation between supersymmetry and geometric flows driven by the Bianchi identity for the three-form flux $H$ in heterotic supergravity. We describe how the flow equations can be derived from a functional that appears in a rewriting of the bosonic action in terms of squares of supersymmetry operators. On a complex threefold, the resulting equations match what is known in the mathematics literature as "anomaly flow". We generalise this to seven- and eight-manifolds with G$_2$ or Spin(7) structures and discuss examples where the manifold is a torus fibration over a K3 surface. In the latter cases, the flow simplifies to a single scalar equation, with the existence of the supergravity solution implied by the long-time existence and convergence of the flow. We also comment on the $\alpha'$ expansion and highlight the importance of using the proper connection in the Bianchi identity to ensure that the flow's fixed points satisfy the supergravity equations of motion. Comment: 47 pages plus appendices
arXiv.org e-Print Ar... arrow_drop_down Communications in Mathematical PhysicsArticle . 2024 . Peer-reviewedLicense: Springer Nature TDMData sources: CrossrefMémoires en Sciences de l'Information et de la Communication; HAL-CEAArticle . Preprint . 2024 . 2023https://doi.org/10.48550/arxiv...Article . 2023License: arXiv Non-Exclusive DistributionData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1007/s00220-023-04910-7&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert arXiv.org e-Print Ar... arrow_drop_down Communications in Mathematical PhysicsArticle . 2024 . Peer-reviewedLicense: Springer Nature TDMData sources: CrossrefMémoires en Sciences de l'Information et de la Communication; HAL-CEAArticle . Preprint . 2024 . 2023https://doi.org/10.48550/arxiv...Article . 2023License: arXiv Non-Exclusive DistributionData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1007/s00220-023-04910-7&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Preprint , Article 2024Publisher:IOP Publishing Scott Geraedts; Erica Brand; Thomas R Dean; Sebastian Eastham; Carl Elkin; Zebediah Engberg; Ulrike Hager; Ian Langmore; Kevin McCloskey; Joe Yue-Hei Ng; John C Platt; Tharun Sankar; Aaron Sarna; Marc Shapiro; Nita Goyal;Persistent contrails make up a large fraction of aviation's contribution to global warming. We describe a scalable, automated detection and matching (ADM) system to determine from satellite data whether a flight has made a persistent contrail. The ADM system compares flight segments to contrails detected by a computer vision algorithm running on images from the GOES-16 Advanced Baseline Imager. We develop a 'flight matching' algorithm and use it to label each flight segment as a 'match' or 'non-match'. We perform this analysis on 1.6 million flight segments. The result is an analysis of which flights make persistent contrails several orders of magnitude larger than any previous work. We assess the agreement between our labels and available prediction models based on weather forecasts. Shifting air traffic to avoid regions of contrail formation has been proposed as a possible mitigation with the potential for very low cost/ton-CO2e. Our findings suggest that imperfections in these prediction models increase this cost/ton by about an order of magnitude. Contrail avoidance is a cost-effective climate change mitigation even with this factor taken into account, but our results quantify the need for more accurate contrail prediction methods and establish a benchmark for future development. 17 pages, 6 figures
arXiv.org e-Print Ar... arrow_drop_down Environmental Research CommunicationsArticle . 2024 . Peer-reviewedLicense: CC BYData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1088/2515-7620/ad11ab&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert arXiv.org e-Print Ar... arrow_drop_down Environmental Research CommunicationsArticle . 2024 . Peer-reviewedLicense: CC BYData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1088/2515-7620/ad11ab&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Preprint , Article 2024Embargo end date: 01 Jan 2024 FrancePublisher:arXiv Authors: Collaboration, H. E. S. S.; Aharonian, F.; Benkhali, F. Ait; Aschersleben, J.; +138 AuthorsCollaboration, H. E. S. S.; Aharonian, F.; Benkhali, F. Ait; Aschersleben, J.; Ashkar, H.; Backes, M.; Baktash, A.; Martins, V. Barbosa; Barnard, J.; Batzofin, R.; Becherini, Y.; Berge, D.; Bernlöhr, K.; Bi, B.; Böttcher, M.; Boisson, C.; Bolmont, J.; de Lavergne, M. de Bony; Borowska, J.; Bradascio, F.; Breuhaus, M.; Brose, R.; Brown, A.; Brun, F.; Bruno, B.; Bulik, T.; Burger-Scheidlin, C.; Bylund, T.; Caroff, S.; Casanova, S.; Cecil, R.; Celic, J.; Cerruti, M.; Chand, T.; Chandra, S.; Chen, A.; Chibueze, J.; Chibueze, O.; Cotter, G.; Mbarubucyeye, J. Damascene; Davids, I. D.; Djuvsland, J.; Dmytriiev, A.; Doroshenko, V.; Egberts, K.; Einecke, S.; Ernenwein, J. -P.; Fontaine, G.; Füßling, M.; Funk, S.; Gabici, S.; Ghafourizadeh, S.; Giavitto, G.; Glawion, D.; Glicenstein, J. F.; Glombitza, J.; Goswami, P.; Grolleron, G.; Haerer, L.; Hinton, J. A.; Holch, T. L.; Holler, M.; Horns, D.; Jamrozy, M.; Jankowsky, F.; Joshi, V.; Jung-Richardt, I.; Kasai, E.; Katarzyński, K.; Khatoon, R.; Kh'elifi, B.; z; niak; Komin, Nu.; Kosack, K.; Kostunin, D.; Lang, R. G.; Stum, S. Le; Leitl, F.; Lemière, A.; Lenain, J. -P.; Leuschner, F.; Luashvili, A.; Mackey, J.; Marx, R.; Mehta, A.; Meyer, M.; Mitchell, A.; Moderski, R.; Montanari, A.; Moulin, E.; de Naurois, M.; Niemiec, J.; O'Brien, P.; Ohm, S.; Olivera-Nieto, L.; Wilhelmi, E. de Ona; Ostrowski, M.; Panny, S.; Parsons, R. D.; Pita, S.; Prokhorov, D. A.; Pühlhofer, G.; Punch, M.; Quirrenbach, A.; Reichherzer, P.; Reimer, A.; Reimer, O.; Ren, H.; Rieger, F.; Rudak, B.; Sahakian, V.; Salzmann, H.; Sanchez, D. A.; Sasaki, M.; Schüssler, F.; Schutte, H. M.; Shapopi, J. N. S.; Sol, H.; Specovius, A.; Spencer, S.; L.; Stawarz; Steenkamp, R.; Steinmassl, S.; Streil, K.; Sushch, I.; Suzuki, H.; Takahashi, T.; Tanaka, T.; van Eldik, C.; Vecchi, M.; Veh, J.; Venter, C.; Wagner, S. J.; Wierzcholska, A.; Zacharias, M.; Zargaryan, D.; Zdziarski, A. A.; Zech, A.; Zouari, S.; Żywucka, N.;Most $\gamma$-ray detected active galactic nuclei are blazars with one of their relativistic jets pointing towards the Earth. Only a few objects belong to the class of radio galaxies or misaligned blazars. Here, we investigate the nature of the object PKS 0625-354, its $\gamma$-ray flux and spectral variability and its broad-band spectral emission with observations from H.E.S.S., Fermi-LAT, Swift-XRT, and UVOT taken in November 2018. The H.E.S.S. light curve above 200 GeV shows an outburst in the first night of observations followed by a declining flux with a halving time scale of 5.9h. The $\gamma\gamma$-opacity constrains the upper limit of the angle between the jet and the line of sight to $\sim10^\circ$. The broad-band spectral energy distribution shows two humps and can be well fitted with a single-zone synchrotron self Compton emission model. We conclude that PKS 0625-354, as an object showing clear features of both blazars and radio galaxies, can be classified as an intermediate active galactic nuclei. Multi-wavelength studies of such intermediate objects exhibiting features of both blazars and radio galaxies are sparse but crucial for the understanding of the broad-band emission of $\gamma$-ray detected active galactic nuclei in general. Comment: 9 pages, 6 figures, accepted for publication in Astronomy & Astrophysics
arXiv.org e-Print Ar... arrow_drop_down https://doi.org/10.48550/arxiv...Article . 2024License: arXiv Non-Exclusive DistributionData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.48550/arxiv.2401.07071&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert arXiv.org e-Print Ar... arrow_drop_down https://doi.org/10.48550/arxiv...Article . 2024License: arXiv Non-Exclusive DistributionData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.48550/arxiv.2401.07071&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Preprint 2024Publisher:Elsevier BV Tolan, Jamie; Yang, Hung-I; Nosarzewski, Ben; Couairon, Guillaume; Vo, Huy; Brandt, John; Spore, Justine; Majumdar, Sayantan; Haziza, Daniel; Vamaraju, Janaki; Moutakanni, Theo; Bojanowski, Piotr; Johns, Tracy; White, Brian; Tiecke, Tobias; Couprie, Camille;Vegetation structure mapping is critical for understanding the global carbon cycle and monitoring nature-based approaches to climate adaptation and mitigation. Repeated measurements of these data allow for the observation of deforestation or degradation of existing forests, natural forest regeneration, and the implementation of sustainable agricultural practices like agroforestry. Assessments of tree canopy height and crown projected area at a high spatial resolution are also important for monitoring carbon fluxes and assessing tree-based land uses, since forest structures can be highly spatially heterogeneous, especially in agroforestry systems. Very high resolution satellite imagery (less than one meter (1m) Ground Sample Distance) makes it possible to extract information at the tree level while allowing monitoring at a very large scale. This paper presents the first high-resolution canopy height map concurrently produced for multiple sub-national jurisdictions. Specifically, we produce very high resolution canopy height maps for the states of California and Sao Paulo, a significant improvement in resolution over the ten meter (10m) resolution of previous Sentinel / GEDI based worldwide maps of canopy height. The maps are generated by the extraction of features from a self-supervised model trained on Maxar imagery from 2017 to 2020, and the training of a dense prediction decoder against aerial lidar maps. We also introduce a post-processing step using a convolutional network trained on GEDI observations. We evaluate the proposed maps with set-aside validation lidar data as well as by comparing with other remotely sensed maps and field-collected data, and find our model produces an average Mean Absolute Error (MAE) of 2.8 meters and Mean Error (ME) of 0.6 meters.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.rse.2023.113888&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.rse.2023.113888&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Preprint 2024 United StatesPublisher:Elsevier BV Authors: Geoff Boeing; Clemens Pilgram; Yougeng Lu;Geoff Boeing; Clemens Pilgram; Yougeng Lu;This study estimates the relationships between street network characteristics and transport-sector CO2 emissions across every urban area in the world and investigates whether they are the same across development levels and urban design paradigms. The prior literature has estimated relationships between street network design and transport emissions---including greenhouse gases implicated in climate change---primarily through case studies focusing on certain world regions or relatively small samples of cities, complicating generalizability and applicability for evidence-informed practice. Our worldwide study finds that straighter, more-connected, and less-overbuilt street networks are associated with lower transport emissions, all else equal. Importantly, these relationships vary across development levels and design paradigms---yet most prior literature reports findings from urban areas that are outliers by global standards. Planners need a better empirical base for evidence-informed practice in under-studied regions, particularly the rapidly urbanizing Global South.
https://doi.org/10.3... arrow_drop_down eScholarship - University of CaliforniaArticle . 2024Data sources: eScholarship - University of CaliforniaTransportation Research Part D Transport and EnvironmentArticle . 2024 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.2139/ssrn.4682232&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert https://doi.org/10.3... arrow_drop_down eScholarship - University of CaliforniaArticle . 2024Data sources: eScholarship - University of CaliforniaTransportation Research Part D Transport and EnvironmentArticle . 2024 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.2139/ssrn.4682232&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu