Spatial scales of climate response to inhomogeneous radiative forcing
International audience The distances over which localized radiative forcing influences surface temperature have not been well characterized. We present a general methodology to analyze the spatial scales of the forcing/response relationship and apply it to simulations of historical aerosol forcing a...
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Online Access: | https://hal.science/hal-03201079 https://hal.science/hal-03201079/document https://hal.science/hal-03201079/file/2010JD014108.pdf https://doi.org/10.1029/2010JD014108 |
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ftuniversailles:oai:HAL:hal-03201079v1 2024-04-28T08:11:28+00:00 Spatial scales of climate response to inhomogeneous radiative forcing Shindell, Drew Schulz, Michael Ming, Yi Takemura, Toshihiko Faluvegi, Greg Ramaswamy, V. Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) 2010 https://hal.science/hal-03201079 https://hal.science/hal-03201079/document https://hal.science/hal-03201079/file/2010JD014108.pdf https://doi.org/10.1029/2010JD014108 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2010JD014108 hal-03201079 https://hal.science/hal-03201079 https://hal.science/hal-03201079/document https://hal.science/hal-03201079/file/2010JD014108.pdf doi:10.1029/2010JD014108 info:eu-repo/semantics/OpenAccess ISSN: 0148-0227 EISSN: 2156-2202 Journal of Geophysical Research https://hal.science/hal-03201079 Journal of Geophysical Research, 2010, 115 (D19), ⟨10.1029/2010JD014108⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2010 ftuniversailles https://doi.org/10.1029/2010JD014108 2024-04-04T17:34:31Z International audience The distances over which localized radiative forcing influences surface temperature have not been well characterized. We present a general methodology to analyze the spatial scales of the forcing/response relationship and apply it to simulations of historical aerosol forcing and response in four climate models. We find that the surface temperature response is not strongly sensitive to the longitude of forcing but is fairly sensitive to latitude. Surface temperature responses in the Arctic and the Southern Hemisphere extratropics, where forcing was small, show little relationship to local forcing. Restricting the analysis to 30°S-60°N, where nearly all the forcing was applied, shows that forcing strongly influences response out to ∼4500 km away examining all directions. The meridional length of influence is somewhat shorter (∼3500 km or 30°), while it extends out to at least 12,000 km in the zonal direction. Substantial divergences between the models are seen over the oceans, whose physical representations differ greatly among the models. Length scales are quite consistent over 30°S-60°N land areas, however, despite differences in both the forcing applied and the physics of the models themselves. The results suggest that better understanding of regionally inhomogeneous radiative forcing would lead to improved projections of regional climate change over land areas. They also provide quantitative estimates of the spatial extent of the climate impacts of pollutants, which can extend thousands of kilometers beyond polluted areas, especially in the zonal direction. Article in Journal/Newspaper Arctic Climate change Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ Journal of Geophysical Research 115 D19 |
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Open Polar |
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Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ |
op_collection_id |
ftuniversailles |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Shindell, Drew Schulz, Michael Ming, Yi Takemura, Toshihiko Faluvegi, Greg Ramaswamy, V. Spatial scales of climate response to inhomogeneous radiative forcing |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience The distances over which localized radiative forcing influences surface temperature have not been well characterized. We present a general methodology to analyze the spatial scales of the forcing/response relationship and apply it to simulations of historical aerosol forcing and response in four climate models. We find that the surface temperature response is not strongly sensitive to the longitude of forcing but is fairly sensitive to latitude. Surface temperature responses in the Arctic and the Southern Hemisphere extratropics, where forcing was small, show little relationship to local forcing. Restricting the analysis to 30°S-60°N, where nearly all the forcing was applied, shows that forcing strongly influences response out to ∼4500 km away examining all directions. The meridional length of influence is somewhat shorter (∼3500 km or 30°), while it extends out to at least 12,000 km in the zonal direction. Substantial divergences between the models are seen over the oceans, whose physical representations differ greatly among the models. Length scales are quite consistent over 30°S-60°N land areas, however, despite differences in both the forcing applied and the physics of the models themselves. The results suggest that better understanding of regionally inhomogeneous radiative forcing would lead to improved projections of regional climate change over land areas. They also provide quantitative estimates of the spatial extent of the climate impacts of pollutants, which can extend thousands of kilometers beyond polluted areas, especially in the zonal direction. |
author2 |
Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) |
format |
Article in Journal/Newspaper |
author |
Shindell, Drew Schulz, Michael Ming, Yi Takemura, Toshihiko Faluvegi, Greg Ramaswamy, V. |
author_facet |
Shindell, Drew Schulz, Michael Ming, Yi Takemura, Toshihiko Faluvegi, Greg Ramaswamy, V. |
author_sort |
Shindell, Drew |
title |
Spatial scales of climate response to inhomogeneous radiative forcing |
title_short |
Spatial scales of climate response to inhomogeneous radiative forcing |
title_full |
Spatial scales of climate response to inhomogeneous radiative forcing |
title_fullStr |
Spatial scales of climate response to inhomogeneous radiative forcing |
title_full_unstemmed |
Spatial scales of climate response to inhomogeneous radiative forcing |
title_sort |
spatial scales of climate response to inhomogeneous radiative forcing |
publisher |
HAL CCSD |
publishDate |
2010 |
url |
https://hal.science/hal-03201079 https://hal.science/hal-03201079/document https://hal.science/hal-03201079/file/2010JD014108.pdf https://doi.org/10.1029/2010JD014108 |
genre |
Arctic Climate change |
genre_facet |
Arctic Climate change |
op_source |
ISSN: 0148-0227 EISSN: 2156-2202 Journal of Geophysical Research https://hal.science/hal-03201079 Journal of Geophysical Research, 2010, 115 (D19), ⟨10.1029/2010JD014108⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2010JD014108 hal-03201079 https://hal.science/hal-03201079 https://hal.science/hal-03201079/document https://hal.science/hal-03201079/file/2010JD014108.pdf doi:10.1029/2010JD014108 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2010JD014108 |
container_title |
Journal of Geophysical Research |
container_volume |
115 |
container_issue |
D19 |
_version_ |
1797578879308660736 |