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投稿时间:2008-02-22 修订日期:2008-10-28
投稿时间:2008-02-22 修订日期:2008-10-28
中文摘要: 为研究前期以及同时期北极海冰异常对中国夏季高温的影响,根据近50年来中国160个台站
的夏季高温资料以及近50年来的北极海冰资料,用SVD诊断分析方法,提取出两场相关最强,
协方差最大的三个时次——分别为同期、海冰超前夏季高温9个月和超前13个月。分
析研究表明:当北极海冰发生异常时,中国夏季高温异常的响应是滞后的,尤其是滞后9个月
、13个月时;北极海冰在1978—1979年突然异常减少,且1979年以后维持海冰偏少的态势
;当前期或同时期的北极海冰出现异常增多(减少)时,在中国夏季高温场上的响应以“南
区”、“北区”夏季高温异常偏低(偏高),与海冰变化反位相;“中区”夏季高温异常偏
高(偏低),与海冰变化同位相。
Abstract:The relationship between the Arctic sea-ice concentration (ASIC) and s
ummer mean maximum air temperature (MMT) in China is analyzed by using Singular
Value Decomposition(SVD), ASIC data and MMT data of 160 stations in China from 1
951 to 2002. The results show that ASIC reduced significantly in 1978/1979 and s
till
kept the low value after 1979. The response of MMT to the abnormal of SIC has 9
-13 months lag. The response patterns are opposite phase for South China or Nort
h China, and same phase for central China areas. It is necessary to focus more a
ttention on the Arctic sea-ice extent in the mechanism and prediction of summer
MMT variation in China.
文章编号: 中图分类号: 文献标志码:
基金项目:
Author Name | Affiliation |
Fang Rong | Hefei Meteorological Office, Anhui Province 230031 |
Yang Xiuqun | Department of Atmospheric Sciences,Nanjing University |
引用文本:
方茸,杨修群,2009.中国夏季高温与北极海冰的联系特征[J].气象,35(3):81-86.
Fang Rong,Yang Xiuqun,2009.Summer Maximum Air Temperature Variability in China and Its Association with the Arctic Sea Ice Concentration[J].Meteor Mon,35(3):81-86.
方茸,杨修群,2009.中国夏季高温与北极海冰的联系特征[J].气象,35(3):81-86.
Fang Rong,Yang Xiuqun,2009.Summer Maximum Air Temperature Variability in China and Its Association with the Arctic Sea Ice Concentration[J].Meteor Mon,35(3):81-86.