ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Distribution and Cause on Frequent Freezing Rain Zone in Guizhou
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Abstract:
Freezing rain is a major severe weather in Guizhou winter. The observed data in the past 48 years in Guizhou are used to reveal the frequent freezing rain zone at 27 °N as the central axis of the distribution. To research this phenomenon, a typical case has been found, and the impacts on freezing rain coming from the coldwarm air mass, and moisturetemperature characteristics are discussed. It is pointed out that the frequent freezing rain zone in Guizhou results from the combination of cold and warm air masses and it happens under the background of the quasistationary front; An obvious melting layer and the temperature field with “coldwarmcold” structural features correspond to the strong freezing rain; If without melting layer, the strong advection in the lower atmospheric cooling centers is also able to cause the strong freezing rain. Based on the above analysis, one kind of threedimensional structure for typical freezing rain has been proposed.
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