湖北一次沙尘天气过程气象条件研究  

Meteorological Conditions Analysis of a Sand Dust Processin Hubei Province

作　　者：赵碧云 湛甜 岳岩裕[2] 何欢 Zhao Biyun;Zhan Tian;Yue Yanyu;He Huan(Jingmen Meteorological Bureau,Jingmen 448000,China;Wuhan Regional Climate Center,Wuhan 430074,China)

机构地区：[1]荆门市气象局,湖北荆门448000 [2]武汉区域气候中心,湖北武汉430074

出　　处：《环境科学与管理》2023年第7期93-98,共6页Environmental Science and Management

基　　金：2022年湖北省环保科研项目(2022HB05);湖北省气象局重点基金(2021Z05)。

摘　　要：结合高空、地面天气形势和后向轨迹模拟及传输指数对2021年3月16-17日影响湖北省的沙尘天气过程进行分析。结果表明:此次沙尘天气主要是偏北大风引导下,从蒙古国经内蒙古、华北、河南到达湖北省;在湖北省内可分为两个输送通道:中部主通道襄阳-荆门-荆州一线,东部次要通道随州-孝感-武汉一线,中部通道输入强度大、污染重;降水对沙尘影响主要是削峰清除作用,风对沙尘的影响主要是输入和清除;建立的传输指数在综合考虑预报提前量和途经地实况数据可获取性的情况下表现出较好的预报指示意义,可为传输型污染预报提供客观参考依据。Analyze the sand dust process affected Hubei province in March 16th to 17th,2021 combining with upper air and ground weather situation,backward trajectory simulation and transmission index.The results shows that the sand dust was guided by northerly wind from Mongolia through Inner Mongolia,North China,Henan then arrived Hubei.It can be divided into two delivery channels in Hubei Province,the major one is Xiangyang-Jingmen-Jingzhou in central Hubei which has the largest input intensity and the heaviest contamination,while the minor is Suizhou-Xiaogan-Wuhan in the east Hubei.The effect of precipitation on sand dust is mainly reflected in the scavenging effect of clipping peaks but wind in input and removal.With consideration of forecast leading time and data accessibility on air mass trajectories the transmission index shows fairly implications,which can offer objective references for transmission type contamination forecast.

关 键 词：沙尘 传输指数 后向轨迹 气象条件 

分 类 号：X51[环境科学与工程—环境工程]