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| 1948-2004年全球平均Hadley环流强度指数与特征 | |
| 引用本文： | 张俊,谷德军,施能.1948-2004年全球平均Hadley环流强度指数与特征[J].南京气象学院学报,2007,30(2):231-238. |
| 作者姓名： | 张俊 谷德军 施能 |
| 作者单位： | 1. 南京信息工程大学,江苏省气象灾害重点实验室,江苏,南京,210044 2. 中国气象局,广州热带海洋气象研究所,广东,广州,510080 3. 南京信息工程大学,江苏省气象灾害重点实验室,江苏,南京,210044;中国气象局,广州热带海洋气象研究所,广东,广州,510080 |
| 基金项目： | 国家自然科学基金 , 热带气象科学研究基金 , 中国气象局热带季风重点开放实验室项目 |
| 摘 要： | 利用NCEP/NCAR逐月平均风场资料,研究了全球平均Hadley环流特征.利用3层4个关键区的风定义并计算了1948年1月-2004年12月的全球纬向平均的南/北半球和全球Hadley环流逐月强度指数.结果表明:计算的Hadley环流指数可以合理地表示Hadley环流的强度;北半球Hadley环流除7-9月(南半球除5月)外都呈增强趋势;南/北半球的年平均Hadley环流也是增强的.年际相关分析表明:Hadley环流指数与SOI有非常高的负相关,Hadley环流强度的年际变化与ENSO关系密切. |
| 关 键 词： | 经圈环流 Hadley环流 SOI ENSO 环流强度 强度指数 环流特征 Characteristics during Intensity Index Hadley Circulation Mean 关系 ENSO 年际变化 负相关 分析表 增强趋势 南半球 地表 环流指数 结果 北半球 纬向 |
| 文章编号： | 1000-2022（2007）02-0231-08 |
| 修稿时间： | 2005-11-112006-06-09 |
Global Mean Hadley Circulation Intensity Index during 1948-2004 and Its Characteristics |
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| ZHANG Jun,GU De-jun,SHI Neng.Global Mean Hadley Circulation Intensity Index during 1948-2004 and Its Characteristics[J].Journal of Nanjing Institute of Meteorology,2007,30(2):231-238. | |
| Authors: | ZHANG Jun GU De-jun SHI Neng |
| Institution: | 1. Jiangsu Key Laboratory of Meteorological and Disaster, NUIST, Nanjing 210044, China; 2. Guangzhou Institute of Tropical and Oceanic Meteoroiogy,CMA,Guangzhou 510080,China |
| Abstract: | The characteristic of global zonal mean Hadley circulation has been investigated by using the NCEP/NCAR monthly wind reanalysis data from 1948 to 2004. The intensity index of Hadley circulation is defined and calculated by using the 3 levels wind data in 4 key regions for the southern/northern hemisphere and the global. Results indicate that the index calculated can represent the Hadley circulation intensity reasonably. The monthly Hadley circulation indices showed an increasing trend in the northern hemisphere except for the months from July to September, in the southern hemisphere except for May. The yearly averaged indexes were both increased obviously over the southern and northern hemisphere. Interannual correlation analysis shows a significant negative correlation between Hadley circulation index and SOI. The interannual variation of Hadley circulation intensity was close related with ENSO. |
| Keywords: | zonal circulation Hadley circulation SOI ENSO |
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