2008年初南方一次雨雪冰冻天气云微物理过程和逆温层结数值模拟  

NUMERICAL SIMULATION ON CLOUD MICRO-PHYSICAL PROCESS AND INVERSION LAYER OF FREEZING RAIN AND SNOW STORM OVER SOUTHERN CHINA IN JANUARY 2008

作　　者：罗海波[1,2,3] 李耀东[2] 余政 蔡平 

机构地区：[1]解放军理工大学气象学院 [2]空军装备研究院航空气象防化研究所 [3]解放军96315部队 [4]九江市气象台 [5]解放军96301部队

出　　处：《气象与减灾研究》2010年第1期16-22,共7页Meteorology and Disaster Reduction Research

基　　金：国家自然科学基金项目(编号:40775027)

摘　　要：利用WRF中尺度数值模式对2008年1月26—29日中国南方一次雨雪过程进行数值模拟,并根据模拟结果对云微物理过程、逆温区和地面温度等环境条件进行了分析。结果表明:华南地区冻雨天气对应了两种云微物理结构:一种是由液水形成的降水元在下落过程中经过"暖—冷"层结形成冻雨,另一种是由冰晶、雪晶和液水形成的降水经过"冷—暖—冷"层结造成的。利用模式输出的层结、地面条件以及降水状况可以大致得到冻雨可能发生的范围。The WRF model is utilized to simulate the severe freezing rain and snow storm during 26—29,January 2008.The simulation results are used to diagnose the microphysical processes,inversion area and surface temperature condition.The results show that there are two kind of microphysical processes corresponding to the formation of freezing rain in southern China.One is that formed by the liquid precipitable cell which falls through the ＂warm-cold＂layer,and the other is that formed by ice crystal,snow,liquid water which fall through the＂cold-warm-cold＂layer.It is suggested that the freezing rain area could be predicted by composite consideration of stratification,surface condition and precipitation.

关 键 词：冻雨 逆温 云微物理过程 数值模拟 

分 类 号：P426.631[天文地球—大气科学及气象学] P435.1