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| 北极涛动年代际变化与华北夏季降水的联系 | |
| 引用本文： | 李春,罗德海,方之芳,周后福.北极涛动年代际变化与华北夏季降水的联系[J].南京气象学院学报,2005,28(6):755-762. |
| 作者姓名： | 李春 罗德海 方之芳 周后福 |
| 作者单位： | 1. 中国海洋大学海洋环境学院气象系,山东,青岛,266003 2. 成都信息工程学院,四川,成都,610041 3. 安徽省气象局,安徽,合肥,230000 |
| 基金项目： | 国家自然科学基金资助项目（40170192）;江苏省气象灾害重点实验室（南京信息工程大学）开放课题（KLME0508） |
| 摘 要： | 利用NCEP／NCAR再分析资料和华北夏季降水资料，研究了北极涛动的年代际变化及其与大气环流的关系，进而研究与华北夏季降水异常变化的联系。结果表明，北极涛动具有明显的年代际变化，并在1969年发生了气候突变。北极涛动年代际异常与亚洲中纬度高度场异常、850hPa风场的年代际异常具有很好的一致性。在年代际尺度上，北极涛动与贝加尔湖地区阻塞高压发生频率、东亚夏季风强度和华北夏季降水的关系较为密切。 |
| 关 键 词： | 北极涛动 大气环流 阻塞高压 东亚夏季风 华北夏季降水 年代际变化 |
| 文章编号： | 1000-2022（2005）06-0755-08 |
| 收稿时间： | 10 9 2003 12:00AM |
| 修稿时间： | 2003-10-092004-11-24 |
Linkage of Inter-decadal Variations of the Arctic Oscillation and Summer Precipitation over North China |
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| LI Chun,LUO De-hai,FANG Zhi-fang,ZHOU Hou-fu.Linkage of Inter-decadal Variations of the Arctic Oscillation and Summer Precipitation over North China[J].Journal of Nanjing Institute of Meteorology,2005,28(6):755-762. | |
| Authors: | LI Chun LUO De-hai FANG Zhi-fang ZHOU Hou-fu |
| Institution: | 1. Marine Environment Institute, Ocean University of China,Qingdao 266003,China ; 2. Chengdu University of Information Technology, Chengdu 610041 ,China; 3. Anhui Meteorology Bureau,Hefei 230000,China |
| Abstract: | Using the NCEP/NCAR re-analytical dataset and summer precipitation data over North China, we define the Arctic Oscillation index according to the conception of Arctic oscillation proposed by Thompson and Wallace,and study the inter-decadal variation of Arctic oscillations and its relation with the general circulation of the atmosphere and the summer precipitation data over North China. Results show that the Arctic oscillation had obviously inter-decadal variation and an abrupt change in 1969. The inter-decadal variation of Arctic oscillation was in good agreement with the inter-decadal variations of the mid-latitude potential height anomaly field and the 850 hPa wind field over Asia. The Arctic oscillation was close related with the frequency of blocking high over the Baikal Lake area and the intensity of East Asian summer monsoon and summer precipitation over North China. |
| Keywords: | Arctic oscillation general circulation of atmosphere blocking high East Asian monsoon summer precipitation over North China inter-decadal variation |
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