Summer atmospheric circulation over Greenland in response to Arctic amplification and diminished spring snow cover
Abstract The exceptional atmospheric conditions that have accelerated Greenland Ice Sheet mass loss in recent decades have been repeatedly recognized as a possible dynamical response to Arctic amplification. Here, we present evidence of two potentially synergistic mechanisms linking high-latitude wa...
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ftdoajarticles:oai:doaj.org/article:f7d7385ad12a424fb568ddeb21dceda0 2023-07-23T04:17:12+02:00 Summer atmospheric circulation over Greenland in response to Arctic amplification and diminished spring snow cover Jonathon R. Preece Thomas L. Mote Judah Cohen Lori J. Wachowicz John A. Knox Marco Tedesco Gabriel J. Kooperman 2023-06-01T00:00:00Z https://doi.org/10.1038/s41467-023-39466-6 https://doaj.org/article/f7d7385ad12a424fb568ddeb21dceda0 EN eng Nature Portfolio https://doi.org/10.1038/s41467-023-39466-6 https://doaj.org/toc/2041-1723 doi:10.1038/s41467-023-39466-6 2041-1723 https://doaj.org/article/f7d7385ad12a424fb568ddeb21dceda0 Nature Communications, Vol 14, Iss 1, Pp 1-15 (2023) Science Q article 2023 ftdoajarticles https://doi.org/10.1038/s41467-023-39466-6 2023-07-02T00:40:58Z Abstract The exceptional atmospheric conditions that have accelerated Greenland Ice Sheet mass loss in recent decades have been repeatedly recognized as a possible dynamical response to Arctic amplification. Here, we present evidence of two potentially synergistic mechanisms linking high-latitude warming to the observed increase in Greenland blocking. Consistent with a prominent hypothesis associating Arctic amplification and persistent weather extremes, we show that the summer atmospheric circulation over the North Atlantic has become wavier and link this wavier flow to more prevalent Greenland blocking. While a concomitant decline in terrestrial snow cover has likely contributed to this mechanism by further amplifying warming at high latitudes, we also show that there is a direct stationary Rossby wave response to low spring North American snow cover that enforces an anomalous anticyclone over Greenland, thus helping to anchor the ridge over Greenland in this wavier atmospheric state. Article in Journal/Newspaper Arctic Greenland Ice Sheet North Atlantic Directory of Open Access Journals: DOAJ Articles Arctic Greenland Nature Communications 14 1 |
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Directory of Open Access Journals: DOAJ Articles |
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Science Q Jonathon R. Preece Thomas L. Mote Judah Cohen Lori J. Wachowicz John A. Knox Marco Tedesco Gabriel J. Kooperman Summer atmospheric circulation over Greenland in response to Arctic amplification and diminished spring snow cover |
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Science Q |
description |
Abstract The exceptional atmospheric conditions that have accelerated Greenland Ice Sheet mass loss in recent decades have been repeatedly recognized as a possible dynamical response to Arctic amplification. Here, we present evidence of two potentially synergistic mechanisms linking high-latitude warming to the observed increase in Greenland blocking. Consistent with a prominent hypothesis associating Arctic amplification and persistent weather extremes, we show that the summer atmospheric circulation over the North Atlantic has become wavier and link this wavier flow to more prevalent Greenland blocking. While a concomitant decline in terrestrial snow cover has likely contributed to this mechanism by further amplifying warming at high latitudes, we also show that there is a direct stationary Rossby wave response to low spring North American snow cover that enforces an anomalous anticyclone over Greenland, thus helping to anchor the ridge over Greenland in this wavier atmospheric state. |
format |
Article in Journal/Newspaper |
author |
Jonathon R. Preece Thomas L. Mote Judah Cohen Lori J. Wachowicz John A. Knox Marco Tedesco Gabriel J. Kooperman |
author_facet |
Jonathon R. Preece Thomas L. Mote Judah Cohen Lori J. Wachowicz John A. Knox Marco Tedesco Gabriel J. Kooperman |
author_sort |
Jonathon R. Preece |
title |
Summer atmospheric circulation over Greenland in response to Arctic amplification and diminished spring snow cover |
title_short |
Summer atmospheric circulation over Greenland in response to Arctic amplification and diminished spring snow cover |
title_full |
Summer atmospheric circulation over Greenland in response to Arctic amplification and diminished spring snow cover |
title_fullStr |
Summer atmospheric circulation over Greenland in response to Arctic amplification and diminished spring snow cover |
title_full_unstemmed |
Summer atmospheric circulation over Greenland in response to Arctic amplification and diminished spring snow cover |
title_sort |
summer atmospheric circulation over greenland in response to arctic amplification and diminished spring snow cover |
publisher |
Nature Portfolio |
publishDate |
2023 |
url |
https://doi.org/10.1038/s41467-023-39466-6 https://doaj.org/article/f7d7385ad12a424fb568ddeb21dceda0 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Greenland Ice Sheet North Atlantic |
genre_facet |
Arctic Greenland Ice Sheet North Atlantic |
op_source |
Nature Communications, Vol 14, Iss 1, Pp 1-15 (2023) |
op_relation |
https://doi.org/10.1038/s41467-023-39466-6 https://doaj.org/toc/2041-1723 doi:10.1038/s41467-023-39466-6 2041-1723 https://doaj.org/article/f7d7385ad12a424fb568ddeb21dceda0 |
op_doi |
https://doi.org/10.1038/s41467-023-39466-6 |
container_title |
Nature Communications |
container_volume |
14 |
container_issue |
1 |
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1772178551098834944 |