Study on discrimination index of winter precipitation types in Hangzhou city

doi:10.14088/j.cnki.issn0439-8114.2020.07.025

Abstract

Abstract: Based on the daily radiosonde data and surface observation data in winter during 2008 and 2017 in Hangzhou city, the indices on temperature and thickness closely related to transformation of precipitation phase are studied. Eventually, a set of objective discrimination criterion for different precipitation types is summarized in Hangzhou city. The test results show that the objective discrimination criterion has a good performance to rain and snow, and there is neither empty report nor missing report with TS scores of 100%。 In practical application, while weather factors are inconsistent with thresholds of some indices in this discrimination criterion, the supplementary reference criterions proposed in this paper can be combined. Results from this paper can provide a reference for the daily operational forecasting of Hangzhou city in winter.

Key words: precipitation phase, thickness index, discrimination criterion, winter, Hangzhou city

CLC Number:

P456

LI Jin, MAO Ze-jian, ZHOU Juan. Study on discrimination index of winter precipitation types in Hangzhou city[J]. HUBEI AGRICULTURAL SCIENCES, 2020, 59(7): 121-125.

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