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...
Published in: | Geophysical Research Letters |
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2020
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Online Access: | https://escholarship.org/uc/item/5fj555rs https://escholarship.org/content/qt5fj555rs/qt5fj555rs.pdf https://doi.org/10.1029/2020gl088583 |
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ftcdlib:oai:escholarship.org:ark:/13030/qt5fj555rs 2024-09-09T19:18:35+00:00 Warm Arctic, Cold Siberia Pattern: Role of Full Arctic Amplification Versus Sea Ice Loss Alone Labe, Zachary Peings, Yannick Magnusdottir, Gudrun 2020-09-16 application/pdf https://escholarship.org/uc/item/5fj555rs https://escholarship.org/content/qt5fj555rs/qt5fj555rs.pdf https://doi.org/10.1029/2020gl088583 unknown eScholarship, University of California qt5fj555rs https://escholarship.org/uc/item/5fj555rs https://escholarship.org/content/qt5fj555rs/qt5fj555rs.pdf doi:10.1029/2020gl088583 CC-BY Geophysical Research Letters, vol 47, iss 17 Climate Action Arctic amplification sea ice Siberian High Northern Annular Mode climate model climate variability Meteorology & Atmospheric Sciences article 2020 ftcdlib https://doi.org/10.1029/2020gl088583 2024-06-28T06:28:19Z 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. 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. Article in Journal/Newspaper Arctic Sea ice Siberia University of California: eScholarship Arctic Geophysical Research Letters 47 17 |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
Climate Action Arctic amplification sea ice Siberian High Northern Annular Mode climate model climate variability Meteorology & Atmospheric Sciences |
spellingShingle |
Climate Action Arctic amplification sea ice Siberian High Northern Annular Mode climate model climate variability Meteorology & Atmospheric Sciences Labe, Zachary Peings, Yannick Magnusdottir, Gudrun Warm Arctic, Cold Siberia Pattern: Role of Full Arctic Amplification Versus Sea Ice Loss Alone |
topic_facet |
Climate Action Arctic amplification sea ice Siberian High Northern Annular Mode climate model climate variability Meteorology & Atmospheric Sciences |
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. 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. |
format |
Article in Journal/Newspaper |
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 |
publisher |
eScholarship, University of California |
publishDate |
2020 |
url |
https://escholarship.org/uc/item/5fj555rs https://escholarship.org/content/qt5fj555rs/qt5fj555rs.pdf https://doi.org/10.1029/2020gl088583 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice Siberia |
genre_facet |
Arctic Sea ice Siberia |
op_source |
Geophysical Research Letters, vol 47, iss 17 |
op_relation |
qt5fj555rs https://escholarship.org/uc/item/5fj555rs https://escholarship.org/content/qt5fj555rs/qt5fj555rs.pdf doi:10.1029/2020gl088583 |
op_rights |
CC-BY |
op_doi |
https://doi.org/10.1029/2020gl088583 |
container_title |
Geophysical Research Letters |
container_volume |
47 |
container_issue |
17 |
_version_ |
1809758638397456384 |