西双版纳傣族自治州一次罕见冻雨天气特征分析  

Analysis of Characteristics of a Rare Freezing Weather in Xishuangbanna

作　　者：赵晓兰 汤磊 ZHAO Xiao-lan;TANG Lei(Meteorological Bureau of Menghai,Menghai 666200,Chin)

机构地区：[1]勐海县气象局,云南勐海666200

出　　处：《云南师范大学学报（自然科学版）》2018年第4期73-78,共6页Journal of Yunnan Normal University:Natural Sciences Edition

摘　　要：利用探空和地面气象观测资料,对2016年年初发生在西双版纳傣族自治州的冻雨过程进行分析,结果表明南支槽和强冷空气是造成冻雨发生的重要系统,暖湿平流叠加在东北入侵的强冷平流之上有利于冻雨天气的产生,当静止锋到达西双版纳傣族自治州西部,锋后海拔1 500m以上且地面温度低于0℃的高海拔地区将发生冻雨.同时从云物理过程、垂直结构、雷达回波特征等方面分析判断此次冻雨过程为暖雨机制,归纳了西双版纳傣族自治州冻雨天气影响系统的三维结构和大气垂直饱和层、逆温层、暖层、冷层及其他特征物理量等相关因素的参考指标.Using the sounding and surface observation data,the freezing rain which occurred in the early 2016 in Xishuangbanna was analyzed.The result showed that：warm air superimposed on the cold air was conducive to the occurrence of freezing rain.Freezing rain occurred when the stationary front reaches the west of Xishuangbanna and the temperature was lower than 0℃.This freezing rain was due to the warm rain mechanism through analyzing the cloud physical processes,vertical structure,radar echo characteristics and other aspects.The following indexes of freezing rain weather in xishuangbanna were summarized：three-dimensional structure,saturated layer,inversion layer,warm layer,cold layer and other characteristic physical quantities.

关 键 词：低纬 冻雨 冷空气 云物理过程 垂直结构 

分 类 号：P458[天文地球—大气科学及气象学]