| 北太平洋次表层海温异常对中国夏季降水影响的可能途径 |
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| 引用本文： | 李丽平,靳莉莉,管兆勇.北太平洋次表层海温异常对中国夏季降水影响的可能途径[J].大气科学,2010,34(5):988-1000. |
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| 作者姓名： | 李丽平 靳莉莉 管兆勇 |
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| 作者单位： | 南京信息工程大学 教育部气象灾害省部共建实验室和大气科学学院, 南京,210044 |
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| 基金项目： | 国家科技支撑计划项目2007BAC29B02， 留学归国人员基金项目80185 |
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| 摘 要： | 利用Godas月平均次表层海温资料, 分析了冬、春季和夏季北太平洋次表层海温层际相似性特征, 据此对次表层海温进行分层。在此基础上研究了500 hPa位势高度场、北太平洋次表层海温、中国夏季降水三者之间的时滞相关关系, 发现春季北太平洋次表层海温场是联系前、后期大气环流的关键因素。前期冬季大气环流对春季北太平洋次表层海温场影响最显著, 春季北太平洋次表层海温场又持续影响同期及后期夏季大气环流异常。异常的夏季大气环流与同期表层、次表层海温相互作用, 共同造成夏季长江流域与华北、华南降水出现相反异常的分布型式。
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| 关 键 词： | 北太平洋 次表层海温异常 大气环流异常 中国夏季降水异常 |
The Possible Influence Channel of Sub-surface Sea Temperature Anomaly in the North Pacific on China Summer Rainfall |
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| LI Liping,JIN Lili and GUAN Zhaoyong.The Possible Influence Channel of Sub-surface Sea Temperature Anomaly in the North Pacific on China Summer Rainfall[J].Chinese Journal of Atmospheric Sciences,2010,34(5):988-1000. |
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| Authors: | LI Liping JIN Lili and GUAN Zhaoyong |
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| Institution: | Ministry of Education Key Laboratory of Meteorological Disaster of Cooperation of Ministries and Provincial Governments, and College of Atmospheric Sciences, Nanjing University of Information Science and Technology, Nanjing 210044 |
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| Abstract: | By use of Godas monthly sub-surface sea temperature (ST),the similarity of ST among different layers is analyzed,and ST is layered in the North Pacific region for winter,spring,and summer.The time-lag correlations among the 500-hPa geopotential height field,sub-surface sea temperature field in the North Pacific,and the summer rainfall in China are further studied.Results show that the sub-surface ST in spring is an important factor linking the anterior and posterior atmospheric circulation.Atmospheric circu... |
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| Keywords: | North Pacific sub-surface sea temperature anomalies atmospheric circulation anomalies China rainfall anomalies |
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