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中文摘要：
本文先用NCEP再分析资料分析了2000年第10号“碧利斯”台风过程福建暴雨的水汽来源，指出本次福建暴雨过程水汽输送来自台风环境场和中低层东亚夏季风。然后用中尺度模式（MM5）模拟分析了中低层水汽变化对台风登陆前后台风暴雨过程的影响，结果表明水汽变化对降水强度、台风自身强度有非常大的影响。单层水汽敏感性试验结果表明，850hPa层次上水汽对降水的作用最强。
英文摘要：
First,this paper used NCEP reanalysis-data to analyze the water vapor source of the rainstorm in Fujian caused by 0010 typhoon ＂Bylis＂ of 2000. It showed that the vapor came from the typhoon itself and East Asia summer southwest monsoon. Then, the paper used MM5 to simulate how the change of the water vapor under the middle level of the atmosphere influenced the rainstorm and typhoon itself before and after typhoon landed. The result showed that the water vapor change has great influence on the rainfall and typhoon itself intensity. The result of single level water vapor sensitivity experiments showed that the vapor on 850 hPa has most obvious effect on precipitation.
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