Atmospheric circulation modulates the spatial variability of temperature in the Atlantic-Arctic region
International audience The Arctic region has experienced significant warming during the past two decades with major implications on the cryosphere. The causes of Arctic amplification are still an open question within the scientific community, attracting recent interest. The goal of this study is to...
Published in: | International Journal of Climatology |
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Online Access: | https://hal.science/hal-02066207 https://doi.org/10.1002/joc.6044 |
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ftunivnantes:oai:HAL:hal-02066207v1 2023-05-15T14:41:26+02:00 Atmospheric circulation modulates the spatial variability of temperature in the Atlantic-Arctic region Champagne, Olivier Pohl, Benjamin Mckenzie, Shawn Buoncristiani, Jean-François Bernard, Eric Joly, Daniel Tolle, Florian School of Geography and earth sciences McMaster University Hamilton, Ontario Biogéosciences UMR 6282 (BGS) Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS) Théoriser et modéliser pour aménager (UMR 6049) (ThéMA) Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC) Université Bourgogne Franche-Comté COMUE (UBFC)-Université Bourgogne Franche-Comté COMUE (UBFC) 2019-06-30 https://hal.science/hal-02066207 https://doi.org/10.1002/joc.6044 en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1002/joc.6044 hal-02066207 https://hal.science/hal-02066207 doi:10.1002/joc.6044 ISSN: 0899-8418 EISSN: 1097-0088 International Journal of Climatology https://hal.science/hal-02066207 International Journal of Climatology, 2019, 39 (8), pp.3619-3638. ⟨10.1002/joc.6044⟩ arctic amplification Atlantic–Arctic atmospheric circulation internal climate variability reanalyses weather regimes [SHS.GEO]Humanities and Social Sciences/Geography [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology info:eu-repo/semantics/article Journal articles 2019 ftunivnantes https://doi.org/10.1002/joc.6044 2023-02-01T01:04:06Z International audience The Arctic region has experienced significant warming during the past two decades with major implications on the cryosphere. The causes of Arctic amplification are still an open question within the scientific community, attracting recent interest. The goal of this study is to quantify the contribution of atmospheric circulation on temperature variability in the Atlantic–Arctic region at decadal to intra‐annual timescales from 1951 to 2014. Daily 20th Century reanalyses geopotential height anomalies at 500 hPa were clustered into different weather regimes to assess their contribution to observed temperature variability. The results show that in winter, 25% of the warming (cooling) in the North Atlantic Ocean (northeastern Canada) is due to temporal decreases of high geopotential anomalies in Greenland. This regime influences air mass migration patterns, bringing less cold (warm) air masses into these regions. Additionally, atmospheric warming or cooling has been attributed to a change in nearby oceanic basin surface conditions because of sea ice decline. In summer, about 15% of the warming observed in Norwegian/Greenland Seas is related to an increase in temporal anticyclonic patterns. This ratio reaches 37% in Norway due to an amplification from downwards solar radiation. This study allows for better understanding how natural climate variability modulates the regional signature of climate change and estimating the uncertainties in climate projections. Article in Journal/Newspaper Arctic Atlantic Arctic Atlantic-Arctic Climate change Greenland North Atlantic Sea ice Université de Nantes: HAL-UNIV-NANTES Arctic Canada Greenland Norway International Journal of Climatology 39 8 3619 3638 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
arctic amplification Atlantic–Arctic atmospheric circulation internal climate variability reanalyses weather regimes [SHS.GEO]Humanities and Social Sciences/Geography [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
spellingShingle |
arctic amplification Atlantic–Arctic atmospheric circulation internal climate variability reanalyses weather regimes [SHS.GEO]Humanities and Social Sciences/Geography [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology Champagne, Olivier Pohl, Benjamin Mckenzie, Shawn Buoncristiani, Jean-François Bernard, Eric Joly, Daniel Tolle, Florian Atmospheric circulation modulates the spatial variability of temperature in the Atlantic-Arctic region |
topic_facet |
arctic amplification Atlantic–Arctic atmospheric circulation internal climate variability reanalyses weather regimes [SHS.GEO]Humanities and Social Sciences/Geography [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
description |
International audience The Arctic region has experienced significant warming during the past two decades with major implications on the cryosphere. The causes of Arctic amplification are still an open question within the scientific community, attracting recent interest. The goal of this study is to quantify the contribution of atmospheric circulation on temperature variability in the Atlantic–Arctic region at decadal to intra‐annual timescales from 1951 to 2014. Daily 20th Century reanalyses geopotential height anomalies at 500 hPa were clustered into different weather regimes to assess their contribution to observed temperature variability. The results show that in winter, 25% of the warming (cooling) in the North Atlantic Ocean (northeastern Canada) is due to temporal decreases of high geopotential anomalies in Greenland. This regime influences air mass migration patterns, bringing less cold (warm) air masses into these regions. Additionally, atmospheric warming or cooling has been attributed to a change in nearby oceanic basin surface conditions because of sea ice decline. In summer, about 15% of the warming observed in Norwegian/Greenland Seas is related to an increase in temporal anticyclonic patterns. This ratio reaches 37% in Norway due to an amplification from downwards solar radiation. This study allows for better understanding how natural climate variability modulates the regional signature of climate change and estimating the uncertainties in climate projections. |
author2 |
School of Geography and earth sciences McMaster University Hamilton, Ontario Biogéosciences UMR 6282 (BGS) Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS) Théoriser et modéliser pour aménager (UMR 6049) (ThéMA) Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC) Université Bourgogne Franche-Comté COMUE (UBFC)-Université Bourgogne Franche-Comté COMUE (UBFC) |
format |
Article in Journal/Newspaper |
author |
Champagne, Olivier Pohl, Benjamin Mckenzie, Shawn Buoncristiani, Jean-François Bernard, Eric Joly, Daniel Tolle, Florian |
author_facet |
Champagne, Olivier Pohl, Benjamin Mckenzie, Shawn Buoncristiani, Jean-François Bernard, Eric Joly, Daniel Tolle, Florian |
author_sort |
Champagne, Olivier |
title |
Atmospheric circulation modulates the spatial variability of temperature in the Atlantic-Arctic region |
title_short |
Atmospheric circulation modulates the spatial variability of temperature in the Atlantic-Arctic region |
title_full |
Atmospheric circulation modulates the spatial variability of temperature in the Atlantic-Arctic region |
title_fullStr |
Atmospheric circulation modulates the spatial variability of temperature in the Atlantic-Arctic region |
title_full_unstemmed |
Atmospheric circulation modulates the spatial variability of temperature in the Atlantic-Arctic region |
title_sort |
atmospheric circulation modulates the spatial variability of temperature in the atlantic-arctic region |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.science/hal-02066207 https://doi.org/10.1002/joc.6044 |
geographic |
Arctic Canada Greenland Norway |
geographic_facet |
Arctic Canada Greenland Norway |
genre |
Arctic Atlantic Arctic Atlantic-Arctic Climate change Greenland North Atlantic Sea ice |
genre_facet |
Arctic Atlantic Arctic Atlantic-Arctic Climate change Greenland North Atlantic Sea ice |
op_source |
ISSN: 0899-8418 EISSN: 1097-0088 International Journal of Climatology https://hal.science/hal-02066207 International Journal of Climatology, 2019, 39 (8), pp.3619-3638. ⟨10.1002/joc.6044⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/joc.6044 hal-02066207 https://hal.science/hal-02066207 doi:10.1002/joc.6044 |
op_doi |
https://doi.org/10.1002/joc.6044 |
container_title |
International Journal of Climatology |
container_volume |
39 |
container_issue |
8 |
container_start_page |
3619 |
op_container_end_page |
3638 |
_version_ |
1766313204871331840 |