首页 | 本学科首页   官方微博 | 高级检索  
     检索      

索马里急流的年际变化及其对半球间水汽输送和东亚夏季降水的影响
引用本文:王会军,薛峰.索马里急流的年际变化及其对半球间水汽输送和东亚夏季降水的影响[J].地球物理学报,2003,46(1):18-25.
作者姓名:王会军  薛峰
作者单位:LASG,中国科学院大气物理研究所,北京100029
基金项目:中国科学院知识创新工程重要方向项目 (KZCX2— 2 0 3),国家杰出青年基金项目 (40 1 2 50 1 4 ),国家重点基础研究发展规划项目(G1 9980 4 0 90 5) .
摘    要:利用美国国家环境预报中心和美国国家大气科学研究中 心(NCEP/NCAR)再分析月平均气候资料以及Xie和Arkin分析的月平均降水资料(1968~199 8年),针对索马里低空急流(SMJ)的年际变化及其对东亚夏季降水的影响问题展开了分析 研究. 结果揭示,SMJ作为最主要的越赤道气流,对两个半球间水汽输送起最关键的作用, 它把水汽从冬半球输送到夏半球. 夏季SMJ的年际变化有全球范围内的环流异常与之相联系 ,特别是东亚沿岸的波列状异常分布、南亚高压以及澳大利亚以南的偶极型异常分布;它 也同春季的北印度洋等海区的海温异常有密切关系. 研究还表明,春季SMJ的年际变化对东 亚夏季降水和大气环流有显著影响,由于SMJ影响的超前性,因此它在东亚夏季气候预测上 有重要意义.

关 键 词:索马里急流  半球间水汽输送  东亚夏季气候  
文章编号:0001-5733(2003)01-18-08
收稿时间:2002-3-6
修稿时间:2002-8-1

INTERANNUAL VARIABILITY OF SOMALI JET AND ITS INFLUENCES ON THE INTER-HEMISPHERIC WATER VAPOR TRANSPORT AND ON THE EAST ASIAN SUMMER RAINFALL
WANG HUIJUN.INTERANNUAL VARIABILITY OF SOMALI JET AND ITS INFLUENCES ON THE INTER-HEMISPHERIC WATER VAPOR TRANSPORT AND ON THE EAST ASIAN SUMMER RAINFALL[J].Chinese Journal of Geophysics,2003,46(1):18-25.
Authors:WANG HUIJUN
Institution:LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, B eijing 100029, China
Abstract:The monthly reanalysis data set and the analyzed precipitation data set are used to study the interannual variability of Somali Jet (SMJ) and its influences on the inter-hemispheric water vapor transport and on the East Asian summer climate. It is indicated that SMJ plays a key role in the water vapor transport between the two hemispheres. SMJ transports water vapor through the equator from the southern hemisphere to the northern hemisphere during boreal summer time, and from northern hemisphere to the southern hemisphere during boreal winter time. The interannual variation of SMJ is found to be linked with the many changes around the globe, including the wave pattern along East Asia coast, the South Asian high, and dipole pattern to the southeast of Australia. The results also reveal that interannual variation of SMJ at boreal spring has significant influences on the East Asian summer rainfall and atmospheric circulation. Since the changes of SMJ precede the changes of East Asian summer climate, these findings may help to improve the summer climate prediction in East Asia.
Keywords:Somali Jet  Inter-hemispheric water vapor transport  East Asian summer climate  
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《地球物理学报》浏览原始摘要信息
点击此处可从《地球物理学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号