Role of mixed precipitating cloud systems on the typhoon rainfall

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题名:	Role of mixed precipitating cloud systems on the typhoon rainfall
作者:	Pan,CJ;Reddy,KK;Lai,HC;Yang,SS
贡献者:	太空科學研究所
日期:	2010
上传时间:	2012-03-27 17:30:59 (UTC+8)
出版者:	國立中央大學
摘要:	L-band wind profiler data are utilized to diagnose the vertical structure of the typhoon precipitating cloud systems in Taiwan. For several typhoons, a pronounced bright band (BB) around 5 km is commonly observed from the observation. Since strong convection within typhoon circulation may disturb and/or disrupt the melting layer, the BB shall not appear persistently. Hence, an understanding of the vertical structure of the BB region is important because it holds extensive hydrometeors information on the type of precipitation and its variability. Wind profiler observational results suggest that the mixture of convective and stratiform ( embedded type) clouds are mostly associated with typhoons. In the case of one typhoon, BB is appeared around 5.5 km with embedded precipitation and also BB height of 1 km higher than ordinary showery precipitation. This is evident from the long-term observations of wind profiler and Tropical Rainfall Measuring Mission. The Doppler velocity profiles show hydrometers (ice/snow) at 6 km but liquid below 5 km for typhoons and 4 km for showery precipitation. In the BB region the melting particles accelerations of 5.8 ms(-1) km(-1) and 3.2 ms(-1) km(-1) are observed for typhoon and showery precipitation, respectively.
關聯:	ANNALES GEOPHYSICAE
显示于类别:	[太空科學研究所 ] 期刊論文

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