南海越赤道气流变化及对福建降水的影响  

Variation Features of South China Sea (SCS) Cross-equatorial Flow and its Relation to Precipitation in Fuiian Province

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作  者:许金镜[1] 池艳珍[1] 温珍治[1] 何芬[1] 

机构地区:[1]福建省气候中心,福州350001

出  处:《福建气象》2009年第4期1-5,共5页

基  金:福建省气象局开放式气象科学研究基金项目(2006K01)资助

摘  要:通过分析南海越赤道气流的变化特征及其对福建降水的影响关系,结果表明,1)近44年来南海越赤道气流强度冬季呈增强趋势,夏季呈减弱趋势之事实;2)在强度变化过程中夏半年具有较好的滞后正相关关系,其中4~9月的强弱变化具有明显的持续性。3)秋、冬和春季的越赤道气流对福建降水的影响存在显著的正相关关系,并可根据其强、弱变化的持续性特点,对福建降水预测提供参考依据。Herein, the variation features of South China Sea (SCS) cross-equatorial flow and its relation to precipitation in Fujian Province are studied. It is turned out that: 1) The SCS cross-equatorial/low has a tendency of increasing in winter and decreasing in summer in the near 44a; 2) In summer half year, the intensity of SCS cross-equatorial flow has a better lag positive correlation and has a obvious persistence from April to September; 3) There is a significant positive correlation between cross-equatorial flow and Fujian precipitation in spring and former autumn and winter.The variation of intensity and its persistence may provide reference for the short-term climate prediction of precipitation in Fujian Province.

关 键 词:南海越赤道气流 降水 相关分析 

分 类 号:P448[天文地球—大气科学及气象学] P457.6

 

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