Influence of the recent winter Arctic sea ice loss in short-term simulations of a regional atmospheric model.

ABSTRACT: Notable changes in the wintertime Arctic atmospheric circulation have occurred over the last few decades. Despite its importance in understanding the recent changes in the Northern Hemisphere midlatitude climate, it remains unclear whether and how these changes are affected by recent Arctic sea ice loss. In this study, a regional scale model is used to separate the direct sea ice influence from the natural variability of large-scale atmospheric circulation. Results show that, in response to sea ice loss, the increase of geopotential height in the mid-to-upper troposphere is robust across the simulations, but the magnitude of the response is highly dependent on the background state of the atmosphere. In most cases the sea ice loss-induced atmospheric warming is trapped near the surface due

SUBMITTER: Cho H 

PROVIDER: S-EPMC9135704 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature