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投稿时间：2006-10-30 修订日期：2007-01-10
投稿时间：2006-10-30 修订日期：2007-01-10
中文摘要: 山东半岛的冷流天气和其他降水过程有不同的特征，对2005年12月山东半岛北
部地区的连续2场暴雪天气过程进行了分析。常规的雷达资料表明回波顶最高高度为3km，体
现了冷流过程的低空性。WRF中尺度数值模式的模拟结果表明：冷流过程与低层大气层结的
结构特征有着密切的关系；850hPa冷平流与地面降水量有着较好的正相关关系；云水含量、
云中霰含量和上升速度的垂直分布进一步证实了冷流降水的低空性。
Abstract:The cold airstream snowfall weather events occurring in Shandong Penin
sula have different characteristics from other precipitation processes. Two cont
inuous heavy snowfall courses in northern Shandong Peninsula in December 2005 we
re analyzed. It can be seen from the conventional radar data that the top layer
of echo is 3 km, which reflects the low level characteristics of cold airstream
courses. The simulation results by WRF meso scale numerical model show tha
t the
cold airstream weather has a close relationship with the structure of low level
atmosp
here. The cold airstream of 850hPa layer has a positive correlation with ground
precipitation. Vertical distributions of cloud water, cloud graupel water and ve
rtical velocity further approved the low level characteristics of cold airstream
precipatition.
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基金项目:山东省“山东半岛冷流天气形成机理的模式研究”重点课题资助。
引用文本：
李建华,崔宜少,单宝臣,2007.山东半岛低空冷流降雪分析研究[J].气象,33(5):49-55.
Li Jianhua,Cui Yishao,Shan Baochen,2007.Characteristics of Low Level Cold Airstream Snowfall in Shandong Peninsula[J].Meteor Mon,33(5):49-55.
李建华,崔宜少,单宝臣,2007.山东半岛低空冷流降雪分析研究[J].气象,33(5):49-55.
Li Jianhua,Cui Yishao,Shan Baochen,2007.Characteristics of Low Level Cold Airstream Snowfall in Shandong Peninsula[J].Meteor Mon,33(5):49-55.