井冈山冬季典型云海天气分析

Analysis of typical cloud sea weather in Jinggang Mountain in winter

文章通过分析2019年2次井冈山冬季云海的天气特征,同时结合井冈山茨坪气象站气象要素特点,分析井冈山冬季出现云海的天气形势特征。结果表明:井冈山地区典型的冬季云海都属于高空槽前型。江西受500hPa槽前的影响,700hPa中层受西南急流的影响,其次850hPa、925hPa在赣粤交界存在明显的横切切变线,地面则主要是高压的控制,为偏北气流;云海出现的有利因素是850hPa以下的大气相对湿度在90%以上的时候;当黄洋界景区出现云海时,都为茨坪观测站能见度开始转好时,当茨坪观测站能见度下降时即为云海开始消失的时间。

By analyzing the weather characteristics of two winter cloud seas in Jinggang Mountain in 2019,and combining with the characteristics of meteorological elements of Ciping weather station in Jinggang Mountain,the weather situation characteristics of winter cloud sea in Jinggang Mountain are analyzed.The results show that the typical winter cloud sea in Jinggang Mountain belongs to the high trough front type.Jiangxi Province is affected by the 500hPa trough,and the 700hPa middle layer is affected by the southwest jet,and there is an obvious transverse shear lines of 850hPa and 925hPa at the junction of Jiangxi and Guangdong.The surface is mainly controlled by high pressure,which is northerly flow;The favorable factor for the appearance of cloud sea is when the relative humidity below 850hPa is above 90%.moreover,when there is a sea of clouds in the Huangyangjie scenic area,the visibility of Ciping observation station begins to improve.When the visibility of Ciping observation station decreases,the sea of clouds begins to disappear.