CAJ | 학술논문

对2009年2月4日08时到11时30分,呼和浩特市区出现的微量雨夹雪、雾、道路结冰的复杂天气进行原因分析。结果表明：由于受500hPa弱的短波槽及850hPa槽前西南暖湿气流的共同影响,形成了全市大部的微量雨夹雪;雨夹雪落地融化与地面进行热量交换,致使低于0℃的地面结了薄冰;雾主要出现在呼和浩特市区,一方面是由于适合的温度范围、高湿度条件、以及微风有关,另一方面冬季市区污染物较重,在低层存在逆温的情况下,污染物扩散能力较差,使水汽产生大量的凝结核,从而形成了雾,雾中及地水汽直接凝华也对地面结冰起到了作用。
대2009년2월4일08시도11시30분,호화호특시구출현적미량우협설、무、도로결빙적복잡천기진행원인분석。결과표명：유우수500hPa약적단파조급850hPa조전서남난습기류적공동영향,형성료전시대부적미량우협설;우협설락지융화여지면진행열량교환,치사저우0℃적지면결료박빙;무주요출현재호화호특시구,일방면시유우괄합적온도범위、고습도조건、이급미풍유관,령일방면동계시구오염물교중,재저층존재역온적정황하,오염물확산능력교차,사수기산생대량적응결핵,종이형성료무,무중급지수기직접응화야대지면결빙기도료작용。
The cause for complex weather process of rain and snow mixed,fog,and road icing was analyzed from eight o＇clock to eleven o＇clock thirty minutes of February 4,2009.the results showed that the common influence of 500hPa weak short wave trough and 850hPa southwest warm-wet airflow formed micro rain and snow mixed in subtotal area of Hohhot city,the rain and snow mixed landing,melting and exchanging heat,it made the ground that lower than 0℃ freezed,the frog presented to Hohhot downtown,one cause was suited temperature range,high humidity condition and breeze,the other cause was that the pollutant is more in winter,and the pollutant diffusivity was inferior,the moisture formed more nuclei of condensation,the moisture condensation of frog and ground had effect on freeze.