Abstract

The change in sea ice thickness can be divided into dynamical and thermodynamical effect. In the last four decades, the drastic changes in multi-year ice thickness in East Siberian Sea during spring have made the sea ice more susceptible to dynamical effect. On one hand, the dynamical effect on sea ice in this region is the strongest, surpassing that of other Arctic marginal seas, and has been continuously strengthening since 1996. On the other hand, this region’s dynamical effect varies with the Central Arctic Index (CAI). An increase in CAI extreme positive phase years leads to more frequent occurrences of cyclonic circulation anomalies, favoring the development of dynamical effect in spring East Siberian Sea. Furthermore, the influence of 10 m wind field on dynamical effect has shifted from being dominated by the northward component (v) to a combined effect of both northward and eastward components (v and u). This change is a result of alteration in the response pattern of wind field to CAI across the interdecadal periods.

Details

Title
The connection between sea ice dynamics enhancement and atmospheric circulation in the East Siberian Sea during spring
Author
Zhang, Daqian 1   VIAFID ORCID Logo  ; Zhang, Lujun 2   VIAFID ORCID Logo  ; Shi, Guorui 1 ; Xu, Xiaoyang 1 

 School of Atmospheric Sciences, Nanjing University , Nanjing, People’s Republic of China 
 School of Atmospheric Sciences, Nanjing University , Nanjing, People’s Republic of China; Jiangsu Provincial Collaborative Innovation Center for Climate Change , Nanjing, People’s Republic of China 
First page
091011
Publication year
2024
Publication date
Sep 2024
Publisher
IOP Publishing
e-ISSN
25157620
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
3107475327
Copyright
© 2024 The Author(s). Published by IOP Publishing Ltd. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.