安徽农业科学Issue(2)：231-233,3.
陕西一次持续性大雾天气特征分析
Weather Characteristics Analysis of a Continuously Heavy Fog Process in Shaanxi Province
摘要
Abstract
Based on the conventionally observational data and automatic weather station data,the synoptic background,temperature and humidity conditions,atmospheric stratification feature of a wide urea of continuously heavy fog event in Shaanxi Province during November 12-17th 2007 were analyzed.The main conclusions were as follows:the 500 hPa circulation at mid-latitude was northwest flow,and the ground was con trolled by the equal pressure filed,which were favorable for the radiation fog;late Shaanxi was in the isobar dense area of the high-pressure,which formed the front fog;1-4 m/s surface wind and weak vertical movement in lower level were the dynamical conditions of the fog weather;the configurations of big relative humidity at lower level and small relative humidity at middle level constituted water vapor condition of the fog;stable atmospheric stratification and the lower temperature inversion,hindered the low-level moisture diffusion upward,were conducive for the occurrence of the fog.关键词
大雾/环流形势/温湿条件/探空资料Key words
Dense fog/Circulation pattern/Temperature and humidity conditions/Sounding data分类
农业科技引用本文复制引用
刘瑞芳,陈小婷,屈丽玮..陕西一次持续性大雾天气特征分析[J].安徽农业科学,2016,(2):231-233,3.
