Atmospheric circulation modulates the spatial variability of temperature in the Atlantic–Arctic region
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 contributi...
Published in: | International Journal of Climatology |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2019
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1002/joc.6044 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.6044 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6044 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.6044 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6044 |
id |
crwiley:10.1002/joc.6044 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1002/joc.6044 2024-06-02T08:01:05+00:00 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 2019 http://dx.doi.org/10.1002/joc.6044 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.6044 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6044 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.6044 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6044 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor International Journal of Climatology volume 39, issue 8, page 3619-3638 ISSN 0899-8418 1097-0088 journal-article 2019 crwiley https://doi.org/10.1002/joc.6044 2024-05-03T10:37:47Z 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 Wiley Online Library Arctic Canada Greenland Norway International Journal of Climatology 39 8 3619 3638 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Champagne, Olivier Pohl, Benjamin McKenzie, Shawn Buoncristiani, Jean‐François Bernard, Eric Joly, Daniel Tolle, Florian |
spellingShingle |
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 |
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 |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1002/joc.6044 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.6044 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.6044 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.6044 https://rmets.onlinelibrary.wiley.com/doi/pdf/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 |
International Journal of Climatology volume 39, issue 8, page 3619-3638 ISSN 0899-8418 1097-0088 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
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_ |
1800745329048420352 |