A stratospheric pathway linking a colder Siberia to Barents-Kara Sea sea ice loss
Previous studies have extensively investigated the impact of Arctic sea ice anomalies on the midlatitude circulation and associated surface climate in winter. However, there is an ongoing scientific debate regarding whether and how sea ice retreat results in the observed cold anomaly over the adjace...
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ftcolumbiauniv:oai:academiccommons.columbia.edu:10.7916/D8ZK70HZ 2023-05-15T15:07:31+02:00 A stratospheric pathway linking a colder Siberia to Barents-Kara Sea sea ice loss Zhang, Pengfei Wu, Yutian Simpson, Isla R. Smith, Karen L. Zhang, Xiangdong De, Bithi Callaghan, Patrick 2018 https://doi.org/10.7916/D8ZK70HZ English eng https://doi.org/10.7916/D8ZK70HZ Long-range weather forecasting Ocean-atmosphere interaction Sea ice Ocean-atmosphere interaction--Mathematical models Articles 2018 ftcolumbiauniv https://doi.org/10.7916/D8ZK70HZ 2019-04-04T08:17:47Z Previous studies have extensively investigated the impact of Arctic sea ice anomalies on the midlatitude circulation and associated surface climate in winter. However, there is an ongoing scientific debate regarding whether and how sea ice retreat results in the observed cold anomaly over the adjacent continents. We present a robust “cold Siberia” pattern in the winter following sea ice loss over the Barents-Kara seas in late autumn in an advanced atmospheric general circulation model, with a well-resolved stratosphere. Additional targeted experiments reveal that the stratospheric response to sea ice forcing is crucial in the development of cold conditions over Siberia, indicating the dominant role of the stratospheric pathway compared with the direct response within the troposphere. In particular, the downward influence of the stratospheric circulation anomaly significantly intensifies the ridge near the Ural Mountains and the trough over East Asia. The persistently intensified ridge and trough favor more frequent cold air outbreaks and colder winters over Siberia. This finding has important implications for improving seasonal climate prediction of midlatitude cold events. The results also suggest that the model performance in representing the stratosphere-troposphere coupling could be an important source of the discrepancy between recent studies. Article in Journal/Newspaper Arctic Kara Sea Sea ice Siberia Columbia University: Academic Commons Arctic Kara Sea |
institution |
Open Polar |
collection |
Columbia University: Academic Commons |
op_collection_id |
ftcolumbiauniv |
language |
English |
topic |
Long-range weather forecasting Ocean-atmosphere interaction Sea ice Ocean-atmosphere interaction--Mathematical models |
spellingShingle |
Long-range weather forecasting Ocean-atmosphere interaction Sea ice Ocean-atmosphere interaction--Mathematical models Zhang, Pengfei Wu, Yutian Simpson, Isla R. Smith, Karen L. Zhang, Xiangdong De, Bithi Callaghan, Patrick A stratospheric pathway linking a colder Siberia to Barents-Kara Sea sea ice loss |
topic_facet |
Long-range weather forecasting Ocean-atmosphere interaction Sea ice Ocean-atmosphere interaction--Mathematical models |
description |
Previous studies have extensively investigated the impact of Arctic sea ice anomalies on the midlatitude circulation and associated surface climate in winter. However, there is an ongoing scientific debate regarding whether and how sea ice retreat results in the observed cold anomaly over the adjacent continents. We present a robust “cold Siberia” pattern in the winter following sea ice loss over the Barents-Kara seas in late autumn in an advanced atmospheric general circulation model, with a well-resolved stratosphere. Additional targeted experiments reveal that the stratospheric response to sea ice forcing is crucial in the development of cold conditions over Siberia, indicating the dominant role of the stratospheric pathway compared with the direct response within the troposphere. In particular, the downward influence of the stratospheric circulation anomaly significantly intensifies the ridge near the Ural Mountains and the trough over East Asia. The persistently intensified ridge and trough favor more frequent cold air outbreaks and colder winters over Siberia. This finding has important implications for improving seasonal climate prediction of midlatitude cold events. The results also suggest that the model performance in representing the stratosphere-troposphere coupling could be an important source of the discrepancy between recent studies. |
format |
Article in Journal/Newspaper |
author |
Zhang, Pengfei Wu, Yutian Simpson, Isla R. Smith, Karen L. Zhang, Xiangdong De, Bithi Callaghan, Patrick |
author_facet |
Zhang, Pengfei Wu, Yutian Simpson, Isla R. Smith, Karen L. Zhang, Xiangdong De, Bithi Callaghan, Patrick |
author_sort |
Zhang, Pengfei |
title |
A stratospheric pathway linking a colder Siberia to Barents-Kara Sea sea ice loss |
title_short |
A stratospheric pathway linking a colder Siberia to Barents-Kara Sea sea ice loss |
title_full |
A stratospheric pathway linking a colder Siberia to Barents-Kara Sea sea ice loss |
title_fullStr |
A stratospheric pathway linking a colder Siberia to Barents-Kara Sea sea ice loss |
title_full_unstemmed |
A stratospheric pathway linking a colder Siberia to Barents-Kara Sea sea ice loss |
title_sort |
stratospheric pathway linking a colder siberia to barents-kara sea sea ice loss |
publishDate |
2018 |
url |
https://doi.org/10.7916/D8ZK70HZ |
geographic |
Arctic Kara Sea |
geographic_facet |
Arctic Kara Sea |
genre |
Arctic Kara Sea Sea ice Siberia |
genre_facet |
Arctic Kara Sea Sea ice Siberia |
op_relation |
https://doi.org/10.7916/D8ZK70HZ |
op_doi |
https://doi.org/10.7916/D8ZK70HZ |
_version_ |
1766339009419673600 |