The connection between sea ice dynamics enhancement and atmospheric circulation in the East Siberian Sea during spring

被引:1
|
作者
Zhang, Daqian [1 ]
Zhang, Lujun [1 ,2 ]
Shi, Guorui [1 ]
Xu, Xiaoyang [1 ]
机构
[1] Nanjing Univ, Sch Atmospher Sci, Nanjing, Peoples R China
[2] Jiangsu Prov Collaborat Innovat Ctr Climate Change, Nanjing, Peoples R China
来源
ENVIRONMENTAL RESEARCH COMMUNICATIONS | 2024年 / 6卷 / 09期
基金
中国国家自然科学基金;
关键词
sea ice; dynamical effect; Central Arctic Index; ARCTIC-OCEAN; DRIFT; THICKNESS; TRENDS; MOTION; PRODUCTS; IMPACTS; MODEL;
D O I
10.1088/2515-7620/ad78bd
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
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.
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页数:9
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