Mechanisms for European summer temperature response to solar forcing over the last millennium
International audience A simulation of the last millennium is compared to a recent spatio-temporal reconstruction of summer temperature over Europe. The focus is on the response to solar forcing over the pre-industrial era. Although the correlation between solar forcing and the reconstruction remain...
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ftuniversailles:oai:HAL:hal-04113968v1 2023-06-18T03:42:59+02:00 Mechanisms for European summer temperature response to solar forcing over the last millennium Swingedouw, D. Terray, L. Servonnat, J. Guiot, J. Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) 2012 https://hal.science/hal-04113968 https://doi.org/10.5194/cp-8-1487-201210.5194/cpd-8-1301-2012 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-8-1487-201210.5194/cpd-8-1301-2012 hal-04113968 https://hal.science/hal-04113968 BIBCODE: 2012CliPa.8.1487S doi:10.5194/cp-8-1487-201210.5194/cpd-8-1301-2012 Climate of the Past https://hal.science/hal-04113968 Climate of the Past, 2012, 8, pp.1487-1495. ⟨10.5194/cp-8-1487-201210.5194/cpd-8-1301-2012⟩ Earth Science [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2012 ftuniversailles https://doi.org/10.5194/cp-8-1487-201210.5194/cpd-8-1301-2012 2023-06-06T22:41:18Z International audience A simulation of the last millennium is compared to a recent spatio-temporal reconstruction of summer temperature over Europe. The focus is on the response to solar forcing over the pre-industrial era. Although the correlation between solar forcing and the reconstruction remains small, the spatial regression over solar forcing shows statistically significant regions. The meridional pattern of this regression is found to be similar in the model and in the reconstruction. This pattern exhibits a large warming over Northern and Mediterranean Europe and a lesser amplitude response over Central and Eastern Europe. The mechanisms explaining this pattern in the simulation are mainly related to evapotranspiration fluxes. It is shown that the evapotranspiration is larger in summer over Central and Eastern Europe when solar forcing increases, while it decreases over the Mediterranean area. The explanation for the evapotranspiration increase over Central and Eastern Europe is found in the increase of winter precipitation there, leading to a soil moisture increase in spring. As a consequence, the evapotranspiration is larger in summer, which leads to an increase in cloud cover over this region, reducing the surface shortwave flux there and leading to less warming. Over the Mediterranean area, the surface shortwave flux increases with solar forcing, the soil becomes dryer and the evapotranspiration is reduced in summer leading to a larger increase in temperature. This effect appears to be overestimated in the model as compared to the reconstruction. Finally, the warming of Northern Europe is related to the albedo feedback due to sea-ice cover retreat with increasing solar forcing. Article in Journal/Newspaper Sea ice Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ |
institution |
Open Polar |
collection |
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ |
op_collection_id |
ftuniversailles |
language |
English |
topic |
Earth Science [SDU]Sciences of the Universe [physics] |
spellingShingle |
Earth Science [SDU]Sciences of the Universe [physics] Swingedouw, D. Terray, L. Servonnat, J. Guiot, J. Mechanisms for European summer temperature response to solar forcing over the last millennium |
topic_facet |
Earth Science [SDU]Sciences of the Universe [physics] |
description |
International audience A simulation of the last millennium is compared to a recent spatio-temporal reconstruction of summer temperature over Europe. The focus is on the response to solar forcing over the pre-industrial era. Although the correlation between solar forcing and the reconstruction remains small, the spatial regression over solar forcing shows statistically significant regions. The meridional pattern of this regression is found to be similar in the model and in the reconstruction. This pattern exhibits a large warming over Northern and Mediterranean Europe and a lesser amplitude response over Central and Eastern Europe. The mechanisms explaining this pattern in the simulation are mainly related to evapotranspiration fluxes. It is shown that the evapotranspiration is larger in summer over Central and Eastern Europe when solar forcing increases, while it decreases over the Mediterranean area. The explanation for the evapotranspiration increase over Central and Eastern Europe is found in the increase of winter precipitation there, leading to a soil moisture increase in spring. As a consequence, the evapotranspiration is larger in summer, which leads to an increase in cloud cover over this region, reducing the surface shortwave flux there and leading to less warming. Over the Mediterranean area, the surface shortwave flux increases with solar forcing, the soil becomes dryer and the evapotranspiration is reduced in summer leading to a larger increase in temperature. This effect appears to be overestimated in the model as compared to the reconstruction. Finally, the warming of Northern Europe is related to the albedo feedback due to sea-ice cover retreat with increasing solar forcing. |
author2 |
Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Swingedouw, D. Terray, L. Servonnat, J. Guiot, J. |
author_facet |
Swingedouw, D. Terray, L. Servonnat, J. Guiot, J. |
author_sort |
Swingedouw, D. |
title |
Mechanisms for European summer temperature response to solar forcing over the last millennium |
title_short |
Mechanisms for European summer temperature response to solar forcing over the last millennium |
title_full |
Mechanisms for European summer temperature response to solar forcing over the last millennium |
title_fullStr |
Mechanisms for European summer temperature response to solar forcing over the last millennium |
title_full_unstemmed |
Mechanisms for European summer temperature response to solar forcing over the last millennium |
title_sort |
mechanisms for european summer temperature response to solar forcing over the last millennium |
publisher |
HAL CCSD |
publishDate |
2012 |
url |
https://hal.science/hal-04113968 https://doi.org/10.5194/cp-8-1487-201210.5194/cpd-8-1301-2012 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Climate of the Past https://hal.science/hal-04113968 Climate of the Past, 2012, 8, pp.1487-1495. ⟨10.5194/cp-8-1487-201210.5194/cpd-8-1301-2012⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-8-1487-201210.5194/cpd-8-1301-2012 hal-04113968 https://hal.science/hal-04113968 BIBCODE: 2012CliPa.8.1487S doi:10.5194/cp-8-1487-201210.5194/cpd-8-1301-2012 |
op_doi |
https://doi.org/10.5194/cp-8-1487-201210.5194/cpd-8-1301-2012 |
_version_ |
1769009202805604352 |