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中文摘要: 利用NCEP资料对2003年淮河流域6、7月间持续性强暴雨的水汽输送特征进行分析。结果表明:持续性强暴雨发生在我国南方西南水汽输送异常偏强的背景下。水汽从南海北部经副热带高压西南侧向北及从孟加拉湾越过中南半岛到长江中下游两条通道向淮河流域输送。从整个梅汛期和暴雨个例的计算结果来看,暴雨区的各个层次上水汽收支有不同的特点,主要水汽辐合发生在850hPa及其以下层。来自孟加拉湾和南海的水汽向暴雨区输送在不同层次上的比重有很大差异,在暴雨区水汽的主要辐合层上,南海是最重要的水汽源地。
中文关键词: 暴雨，水汽通量，水汽输送
Abstract:Based on NCEP reanalysis data, the characteristics of the moisture transfer over the Jianghuai Valley during the summer of 2003 are studied. The results show that the exceptional precipitation of the Jianghuai Valley in the summer of 2003 is related to the exceptionally intense moisture transfer in the southern area of China. And the Bay of Bangle and the South China Sea are two main moisture sources for the sustained heavy rain over the Jianghuai Valley. The calculation result of the heavy rain event shows that the budget of the moisture over the Jianghuai Valley and the attribution of two main moisture sources varied at different layers. At the layer of 1000—850hPa, which is the main moisture convergent layer during the heavy rain event, the South China Sea is the most important moisture source.
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引用文本：
康志明,2004.2003年淮河流域持续性大暴雨的水汽输送分析[J].气象,30(2):20-24.
,2004.Analysis of Moisture Transfer Associated with Sustained Heavy Rain in 2003 over Jianghuai Valley[J].Meteor Mon,30(2):20-24.
康志明,2004.2003年淮河流域持续性大暴雨的水汽输送分析[J].气象,30(2):20-24.
,2004.Analysis of Moisture Transfer Associated with Sustained Heavy Rain in 2003 over Jianghuai Valley[J].Meteor Mon,30(2):20-24.