A stratospheric pathway linking a colder Siberia to Barents-Kara Sea sea ice loss.

ABSTRACT: 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 pa

SUBMITTER: Zhang P 

PROVIDER: S-EPMC6059732 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature