大连机场冬季冷性低云降雪伴大雾天气过程分析  

Analysis of Winter Cold Low-Cloud Snow and Fog Weather in Dalian Airport

作　　者：崔翠 姜晗春 Cui Cui;Jiang Hanchun(Dalian Air Traffic Administration Station of CAAC,Dalian 116033 Liaoning China)

机构地区：[1]中国民用航空大连空中交通管理站,辽宁大连116033

出　　处：《中国民航飞行学院学报》2020年第6期11-15,共5页Journal of Civil Aviation Flight University of China

摘　　要：2018年12月7-8日大连机场出现了一次冷性低云降雪并伴有大雾的天气过程,降雪持续时间较长,降雪强度大,且跑道积雪较深。本文首先介绍了冷性低云降雪的概况,然后从天气形势场,雷达回波资料,卫星云图资料和物理量场4个方面进行冷性低云降雪的详细分析,之后利用毫米波雷达,边界层风廓线雷达和微波辐射计的探测资料,综合分析云雾综合探测系统在降雪期间大雾天气的应用性。分析表明:此次降雪过程是槽后冷性低云形成的;渤海上充足的水汽和低层的上升运动为冷性低云降雪提供了水汽来源和动力来源;云雾综合探测系统资料对降雪期间大雾天气应用有很好的指示意义。A cold low-cloud snow and fog weather occurred at Dalian airport from 7 to 8 in December,2018.The snowfall lasted for a long time,and the snowfall intensity was large,the runway snow was deep.This paper first introduces the general situation of cold low cloud snowfall,then the cold low cloud snowfall is analyzed in detail from four aspects:synoptic situation field,radar echo data,satellite cloud image data and physical quantity field.After that,the detection data of millimeter radar,boundary layer wind profiler radar and microwave radiometer are used to comprehensively analyze the applicability of the cloud and fog integrated detection system in fog weather during snowfall.The results show that the snowfall process is the formation of cold low clouds behind the trough,the abundant water vapor and the rising movement of the lower layer in the Bohai sea provide the source of water vapor and power for the cold low cloud snow,the data of the cloud and fog integrated detection system have a good indication for the application of fog weather during snowfall.

关 键 词：冷性低云 降雪 大雾 云雾综合探测系统 

分 类 号：V321.2[航空宇航科学与技术—人机与环境工程]