气象科学2013，Vol.33Issue(3)：325-332,8.DOI:10.3969/2012jms.0113
江苏冬季降水相态气候分布特征及预报方法探讨
Climatic characteristics and forecast of precipitation phase in winter of Jiangsu
摘要
Abstract
By using daily radiosonde data and surface observation data during 1981-2010 in Nanjing,Xuzhou and Sheyang,the forecast index of the different precipitation phases in winter is further studied by the method of thickness analysis,based on analysis of climatic characteristics of rain,snow and sleet.The results show that thickness analysis can be used to identify the precipitation phase (rain /snow).The thickness threshold value 1 292 gpm at 1000-850 hPa is an important reference index to distinguish rain and snow in winter of Jiangsu.(a)The thickness threshold value at 1000-850 hPa ≤ 1292 gpm,combined with T850 ≤-3℃ and T≤ 2 ℃ can be used to decide that snow is the most possible precipitation phase.On the contrary,it belongs to rain.In addition,Tw is a very useful reference index for distinguishing rain and snow.关键词
降水相态/厚度分析/预报指标/冬季Key words
Precipitation phase/Thickness analysis/Forecast index/Winter分类
天文与地球科学引用本文复制引用
孙燕,严文莲,尹东屏,刘安宁..江苏冬季降水相态气候分布特征及预报方法探讨[J].气象科学,2013,33(3):325-332,8.基金项目
公益性行业(气象)科研专项(GYHY201006010) （气象）
江苏省气象科研开放基金(K201002) （K201002）
