灾害学2017，Vol.32Issue(1)：132-136,5.DOI:10.3969/j.issn.1000-811X.2017.01.023
西安地区寒潮天气分型及精细化预报指标
Typing Study and Fine Forecast Index of Cold Wave Weather in Xi’an Area
摘要
Abstract
Based on the conventional sounding and meteorological observation data as well as numerical weather prediction product in Xi’an urban and six counties from 2001 to 2015,the spatial temporal features of cold wave weather occurred in Xi’an area are analyzed.It showed that frequency of cold wave weather declined obvious-ly since 2006,especially from 2014 to 2015 and from 2010 to 2012.As for monthly variation,cold wave appeared most in March and April.In terms of spatial distribution,cold wave weather appeared increased gradually from ur-ban to suburb.According to different moving paths of cold air,the cold wave weather in Xi’an was classified into 5 types,that is northwest road cold air,north road cold air,west road cold air,east road cold air and northwest-east road cold air.Besides,the different meteorological characteristics were comparative analyzed.Furthermore,by studying on the cold air position&temperature range,24 hours of negative temperature range and ground cold high pressure range,the altitude forecast indexes,land forecast indexes and EC numerical model prediction indexes of cold wave weather were summarized respectively.关键词
寒潮/不同冷空气路径/分型研究/预报指标/西安地区Key words
cold wave weather/different path of cold air/typing study/forecast index/Xi’an area分类
资源环境引用本文复制引用
乔娟,程龙,翟园,张雅斌..西安地区寒潮天气分型及精细化预报指标[J].灾害学,2017,32(1):132-136,5.基金项目
陕西省预报员专项科研基金 （）
