典型文献
Extreme cold wave in early November 2021 in China and the influences from the meridional pressure gradient over East Asia
文献摘要：
In early November 2021,China experienced its second strongest cold wave event during 1981-2021.Although the Siberian high is considered the main factor influencing cold wave events in East Asia,it was not extremely strong from 4 to November 9,2021.The spatial distribution of the correlation coefficients between the sea level pressure and the daily temperature anomalies shows a monopole pattern,with a notable negative centre in the southern part of the Siberian high monitoring domain.However,the correlation between the sea level pressure and temperature drop presents a typical dipole pattern,with a distinct negative centre in the northern monitoring domain and a positive centre in southern East Asia.During the November 2021 super cold wave process,the sea level pressure anomalies display a dipole pattern with a higher centre in the north and a lower centre in the south owing to the northward shift of the Intertropical Convergence Zone.The meridional pressure gradient index clearly reveals the non-negligible effect of subtropical low-pressure on this super cold wave process,indicating its possibly essential supplementary role in enhancing this process.The above findings provide a new understanding of its mechanism and long-range forecasts.
文献关键词：
中图分类号：
作者姓名：
Xiang LI;Ying-Juan ZHANG;Hui GAO;Ting DING
作者机构：
National Climate Center China Meteorological Administration,Beijing 100081,China;Beijing Meteorological Service,Beijing 100089,China
文献出处：
引用格式：
[1]Xiang LI;Ying-Juan ZHANG;Hui GAO;Ting DING-.Extreme cold wave in early November 2021 in China and the influences from the meridional pressure gradient over East Asia)[J].气候变化研究进展（英文版）,2022(06):797-802
A类：
Intertropical
B类：
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AB值：
0.494285
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