The Arctic and Polar cells act on the Arctic sea ice variation
The Arctic and Polar cells act on the Arctic sea ice variation
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北极和极地细胞对北极海冰变化的作用
DOI：
10.3402/tellusa.v67.27692
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发表时间：
2015-08
影响因子：
2
通讯作者：
Chen Deliang
中科院分区：
文献类型：
--
作者：
Qian Weihong;Wu Kaijun;Chen Deliang
在过去的几十年里，随着年际海冰极小值(SIM)事件的叠加，北极海冰经历了一次实质性的长期下降。本文主要研究了北极地区大气环流与SIM事件的关系。首先分析了四个再分析产品和一个气候模式的模拟结果，通过可视化北半球的平均流线和平均质量流函数，确认了北极圈的存在，北极圈是北纬80°以北的经向环流圈。对纬向平均的定常涡热和动量通量的动力分析以及全球降水资料进一步证实了它的存在。最后，我们发现北极海冰密度的变化滞后于极地和北极环流下降气流强度的变化，气候年周期滞后约2个月，年际异常滞后约10个月。在过去的三十年里，五次北极SIM卡活动支持了这种关系。这些结果对理解大气环流和海冰变化之间的关系以及预测北极海冰变化具有重要意义。
The Arctic sea ice has undergone a substantial long-term decline with superimposed interannual sea ice minimum (SIM) events over the last decades. This study focuses on the relationship between atmospheric circulation and the SIM events in the Arctic region. Four reanalysis products and simulations of one climate model are first analysed to confirm the existence of the Arctic cell, a meridional circulation cell to the north of 80°N, by visualising through the mean streamline and mean mass stream function in the Northern Hemisphere. Dynamical analyses of zonally averaged stationary eddy heat and momentum fluxes as well as the global precipitation rate data further confirm its existence. Finally, we found that the change in the Arctic sea ice concentration lags the variations of the descending air flow intensity associated with the Polar and Arctic cells, by about 2 months for the climatic annual cycle and about 10 months for the interannual anomaly. Five Arctic SIM events during the last three decades support this relationship. These results have implications for understanding the relationship between atmospheric circulation and sea-ice variations, and for predicting the Arctic sea ice changes.
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影响因子：
4.4
作者：
Allan, JD;Jimenez, JL;Worsnop, DR
通讯作者：
Worsnop, DR
影响因子：
--
作者：
S. Schubert;C. Park;W. Higgins;S. Moorthi;M. Suárez
通讯作者：
S. Schubert;C. Park;W. Higgins;S. Moorthi;M. Suárez
DOI：
--
发表时间：
2002
期刊：
Journal of Nanjing Institute of Meteorology
影响因子：
--
作者：
Gong Zhen-song
通讯作者：
Gong Zhen-song
影响因子：
3.1
作者：
K. Trenberth;Shyh-C. Chen
通讯作者：
K. Trenberth;Shyh-C. Chen
影响因子：
1.9
作者：
Ebita, Ayataka;Kobayashi, Shinya;Ishimizu, Takahisa
通讯作者：
Ishimizu, Takahisa