| 四川地区夏季旱涝与西太平洋副热带高压的关系 |
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| 引用本文： | 齐冬梅,李跃清,刘昆鹏.四川地区夏季旱涝与西太平洋副热带高压的关系[J].高原山地气象研究,2012,32(2):41-46. |
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| 作者姓名： | 齐冬梅 李跃清 刘昆鹏 |
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| 作者单位： | 1. 中国气象局成都高原气象研究所,成都,610072
2. 交通运输部东海第一救助飞行队,上海,200137 |
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| 基金项目： | 中国气象局成都高原气象研究所基本科研项目，川气课题2012-青年-05;重庆市气象局开放式研究基金项目 |
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| 摘 要： | 利用近46年西太平洋副热带高压特征指数资料、四川地区123个测站的逐日降水资料集及NCEP\NCAR再分析资料,研究了四川地区夏季旱涝事件的空间分布特征及其与西太副高的关系。结果表明,四川盆地东西部经常出现"西旱东涝"或者"西涝东旱"的异常特征。西太平洋副热带高压的脊线、北界位置与四川盆地东(西)部区的旱涝之间存在很高正(负)相关关系。西太平洋副热带高压南北位置的异常变化对应着东亚地区大气环流的异常变化,从而影响四川盆地东部区及四川盆地西部区的旱涝变化。
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| 关 键 词： | 四川地区 旱涝等级 西太平洋副热带高压 |
Relationship between the Drought and Flood Intensity in Sichuan Area in Summer and West Pacific Subtropical High |
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| QI Dongmei
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LI Yueqing
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LIU Kunpeng.Relationship between the Drought and Flood Intensity in Sichuan Area in Summer and West Pacific Subtropical High[J].Plateau and Mountain Meteorology Research,2012,32(2):41-46. |
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| Authors: | QI Dongmei LI Yueqing LIU Kunpeng |
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| Institution: | 1.Institute of Plateau Meteorology,CMA,Chengdu,610072; 2.Donghai No.1 AirRescue Service,Shanghai,200137) |
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| Abstract: | Based on the monthly west pacific subtropical high indexes in summer,the daily precipitation data in summer collected by 123 stations from 1961 to 2007 and the monthly NCEP/NCAR reanalysis data,the correlation coefficients between them and the features of drought-flood coexistence in the west and east of Sichuan-Chongqing basin in summer are studied.The results indicate that the correlation coefficients between the ridge,north boundary of West Pacific Subtropical High and drought and flood events in East Sichuan Basin,West Sichuan Basin is markedly.The anomaly latitudinal position of West Pacific Subtropical High has significant impact on the atmospheric circulation in East Asia and drought and flood events in East Sichuan Basin and West Sichuan Basin in summer. |
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| Keywords: | Sichuan area flood and drought grades West Pacific Subtropical High |
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