ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Archive > Volume 44 Issue 11 > 2018,44(11):1445-1453. DOI:10.7519/j.issn.1000-0526.2018.11.007 Prev Next
Cloud Features Classification of ShortTime Heavy Rainfall in Complex Topography of Plateau Slope
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Abstract:
Based on the observation data and FY2 satellite cloud image, statistical analysis is carried out on the configuration of weather situation and the evolution of satellite cloud images of 76 shorttime heavy rainfall processes in Gansu Province during May and September of 2010-2015. The results show that there are six kinds of characteristic cloud types, which are related to the shortterm heavy rainfall in Gansu Province, including subtropical high edge, comma cloud, front of the cold front, overlay of cold front tail and South Asia high, the back of the cold vortex, elliptic cloud front of the weak cold front. The subtropical high edge, front of the cold front and elliptic cloud front of the weak cold front types, are related to the low level warm advection forcing. The comma cloud and the overlay of cold front tail and east of South Asia types, are mainly affected by strong convergence of warm and cold advections of high and low levels. The back of the cold vortex type is formed by high altitude cold advection. The overlay of cold front tail and east of South Asia type has better predictive indication.
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