Warm Arctic, Cold Siberia Pattern: Role of Full Arctic Amplification Versus Sea Ice Loss Alone
The effect of future Arctic amplification (AA) on the extratropical atmospheric circulation remains unclear in modeling studies. Using a collection of coordinated atmospheric and coupled global climate model perturbation experiments, we find an emergent relationship between the high-latitude 1,000–5...
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ftosti:oai:osti.gov:1866273 2023-07-30T04:00:44+02:00 Warm Arctic, Cold Siberia Pattern: Role of Full Arctic Amplification Versus Sea Ice Loss Alone Labe, Zachary Peings, Yannick Magnusdottir, Gudrun 2022-05-23 application/pdf http://www.osti.gov/servlets/purl/1866273 https://www.osti.gov/biblio/1866273 https://doi.org/10.1029/2020gl088583 unknown http://www.osti.gov/servlets/purl/1866273 https://www.osti.gov/biblio/1866273 https://doi.org/10.1029/2020gl088583 doi:10.1029/2020gl088583 58 GEOSCIENCES 2022 ftosti https://doi.org/10.1029/2020gl088583 2023-07-11T10:12:11Z The effect of future Arctic amplification (AA) on the extratropical atmospheric circulation remains unclear in modeling studies. Using a collection of coordinated atmospheric and coupled global climate model perturbation experiments, we find an emergent relationship between the high-latitude 1,000–500 hPa thickness response and an enhancement of the Siberian High in winter. This wave number-1-like sea level pressure anomaly pattern is linked to an equatorward shift of the eddy-driven jet and a dynamical cooling response in eastern Asia. Additional simulations, where AA is imposed directly into the model domain by nudging, demonstrate how the sea ice forcing is insufficient by itself to capture the vertical extent of the warming and by extension the amplitude of the response in the Siberian High. Additionally, this study demonstrates the importance of the vertical extent of the tropospheric warming over the polar cap in revealing the “warm Arctic, cold Siberia” anomaly pattern in future projections. Other/Unknown Material Arctic Sea ice Siberia SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Arctic Geophysical Research Letters 47 17 |
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Open Polar |
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SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
58 GEOSCIENCES |
spellingShingle |
58 GEOSCIENCES Labe, Zachary Peings, Yannick Magnusdottir, Gudrun Warm Arctic, Cold Siberia Pattern: Role of Full Arctic Amplification Versus Sea Ice Loss Alone |
topic_facet |
58 GEOSCIENCES |
description |
The effect of future Arctic amplification (AA) on the extratropical atmospheric circulation remains unclear in modeling studies. Using a collection of coordinated atmospheric and coupled global climate model perturbation experiments, we find an emergent relationship between the high-latitude 1,000–500 hPa thickness response and an enhancement of the Siberian High in winter. This wave number-1-like sea level pressure anomaly pattern is linked to an equatorward shift of the eddy-driven jet and a dynamical cooling response in eastern Asia. Additional simulations, where AA is imposed directly into the model domain by nudging, demonstrate how the sea ice forcing is insufficient by itself to capture the vertical extent of the warming and by extension the amplitude of the response in the Siberian High. Additionally, this study demonstrates the importance of the vertical extent of the tropospheric warming over the polar cap in revealing the “warm Arctic, cold Siberia” anomaly pattern in future projections. |
author |
Labe, Zachary Peings, Yannick Magnusdottir, Gudrun |
author_facet |
Labe, Zachary Peings, Yannick Magnusdottir, Gudrun |
author_sort |
Labe, Zachary |
title |
Warm Arctic, Cold Siberia Pattern: Role of Full Arctic Amplification Versus Sea Ice Loss Alone |
title_short |
Warm Arctic, Cold Siberia Pattern: Role of Full Arctic Amplification Versus Sea Ice Loss Alone |
title_full |
Warm Arctic, Cold Siberia Pattern: Role of Full Arctic Amplification Versus Sea Ice Loss Alone |
title_fullStr |
Warm Arctic, Cold Siberia Pattern: Role of Full Arctic Amplification Versus Sea Ice Loss Alone |
title_full_unstemmed |
Warm Arctic, Cold Siberia Pattern: Role of Full Arctic Amplification Versus Sea Ice Loss Alone |
title_sort |
warm arctic, cold siberia pattern: role of full arctic amplification versus sea ice loss alone |
publishDate |
2022 |
url |
http://www.osti.gov/servlets/purl/1866273 https://www.osti.gov/biblio/1866273 https://doi.org/10.1029/2020gl088583 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice Siberia |
genre_facet |
Arctic Sea ice Siberia |
op_relation |
http://www.osti.gov/servlets/purl/1866273 https://www.osti.gov/biblio/1866273 https://doi.org/10.1029/2020gl088583 doi:10.1029/2020gl088583 |
op_doi |
https://doi.org/10.1029/2020gl088583 |
container_title |
Geophysical Research Letters |
container_volume |
47 |
container_issue |
17 |
_version_ |
1772811298507063296 |