摘要
利用高空、地面探测资料以及卫星云图和天气雷达资料,对2007年11月6日清晨至上午发生在通辽市科尔沁区及通辽市南部科左后旗的一次大雾天气进行了分析。结果表明:这次大雾为辐射雾,因前一日通辽市南部受低空高压脊外围的影响,西南气流将渤海以及南方的水汽输送上来,使通辽市南部有了充沛的水汽储备,加之地面形势以均压区为主,气压梯度小,风速弱,晴朗少云,近地面有逆温层,这些都为辐射雾的形成提供了很好的条件,另外从多普勒雷达产品上也反映了一些雾的特征。
The heavy fog is one of the major disasters weather. Base on high and surface observation data, satellite cloud picture and weather radar data, mainly analyzed a heavy fog weather in Keerqin district and Kezuohou in TongLiao in the morning of November 6, 2007. The result shows： the heavy fog was radiation fog, because the south of Tongliao was effeeted by the periphery of low high pressure ridge on November 5, the water vapor from Bohai and the south was carried by southwest air current, so that the south of Tongliao had plenty of water vapor reserve, the equal pressure area on surface, little pressure gradient, weak wind, bright and little cloud, inversion layer at close surface are advantage for formation of radiation fog. In additional, some of the eharaeteristies of fog were reflected by the Doppler radar products.
出处
《内蒙古气象》
2009年第3期16-17,共2页
Meteorology Journal of Inner Mongolia
关键词
辐射雾
水汽
逆温层
回波顶高度
Radiation fog
Vapour
Inversion layer
, Top high-echo
