Long life typhoons over tropical land area : Maintenance mechanisms of disturbances producing wide area disasters over the inland area of South-East Asia

利用泰国、老挝和越南的多部雷达成功地构建了覆盖几乎整个印度支那的雷达数据合成图。结果表明，在长时间的降水过程中，大气环境是有利于降水的。生命台风经过印度支那。区域数值模式的模拟较好地再现了台风中心位置，并较好地反映了中南半岛衰减台风的内部结构特征和老挝雷达资料的多普勒雷达分析。结果还表明，中南半岛中东部沿海秋季台风降水明显增多，且受ENSO影响较强。

Radar data composite map covering almost whole Indochina was constructed successfully from many radars in Thai, Lao and Vietnam. It was shown that the atmospheric environment was favorable for precipitation in cases of long? life typhoons passing over the Indochina. Regional numerical model simulation reproduced the typhoon center position very well, and, more over, caught the characteristics of internal structure of decaying typhoon in the Indochina as well as Doppler radar analysis of Lao radar data. It was also found that the precipitation from typhoons significantly increased in autumn in the eastern middle coast of the Indochina and was strongly affected by ENSO.