| 越赤道气流与西北地区东部夏季降水的联系 |
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| 引用本文： | 李国昌,董安祥,赵建华.越赤道气流与西北地区东部夏季降水的联系[J].南京气象学院学报,2006,29(2):254-257. |
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| 作者姓名： | 李国昌 董安祥 赵建华 |
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| 作者单位： | 1. 南京信息工程大学,江苏,南京,210044;甘肃省人工影响天气办公室,甘肃,兰州,730020;中国气象局,兰州干旱气象研究所,甘肃省干旱气候变化与减灾重点实验室,甘肃,兰州,730020
2. 中国气象局,兰州干旱气象研究所,甘肃省干旱气候变化与减灾重点实验室,甘肃,兰州,730020 |
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| 基金项目： | 甘肃省科技攻关项目;甘肃省科技攻关项目 |
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| 摘 要： | 利用1951-2002年NCEP／NCAR再分析月平均气候资料和西北地区东部夏季降水资料，研究了越赤道气流的年际变化及其对西北地区东部夏季降水的影响。结果表明，自1951年以来，越赤道气流总量呈增强趋势，且持续性好；索马里急流是最主要的越赤道气流，且比较稳定，它是影响西北地区东部夏季降水的重要环流因素。
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| 关 键 词： | 越赤道气流 年际变化 西北地区东部 夏季降水 |
| 文章编号： | 1000-2022（2006）02-0254-04 |
| 收稿时间： | 09 8 2004 12:00AM |
| 修稿时间： | 2004-09-082004-11-24 |
Relationship between Cross-Equatorial Flow and Summer Precipitation in the East of Northwest China |
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| LI Guo-chang,DONG An-xiang,ZHAO Jian-hua.Relationship between Cross-Equatorial Flow and Summer Precipitation in the East of Northwest China[J].Journal of Nanjing Institute of Meteorology,2006,29(2):254-257. |
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| Authors: | LI Guo-chang DONG An-xiang ZHAO Jian-hua |
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| Abstract: | With the aid of the NCEP/NCAR monthly reanalysis data-set and the summer precipitation data in the east of northwest China during 1951-2002 ,the interannual variability of cross-equatorial flow and its influences on summer precipitation in the east of northwest China are analyzed. It is concluded that the cross-equatorial flow has strengthened and is more persistent since 1951 ;and the Somali jet is the principle and stable cross-equatorial flow, and also an important circulation factor which affects the summer precipitation in the east of northwest China. |
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| Keywords: | cross-equatorial flow interannual variability eastern northwest-China summer precipitation |
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