###
气象:2018,44(7):892-901
本文二维码信息
码上扫一扫!
江苏一次大范围的爆发性强浓雾过程研究
严文莲,朱承瑛,朱毓颖,刘端阳,濮梅娟
(中国气象局交通气象重点开放实验室,南京 210009; 江苏省气象台,南京 210008; 江苏省气象科学研究所,南京 210009; 江苏省气象局,南京 210008)
Study on a Wide Range of Explosive Heavy Fog in Jiangsu
YAN Wenlian,ZHU Chengying,ZHU Yuying,LIU Duanyang,PU Meijuan
(Key Laboratory of Transportation Meteorology, CMA, Nanjing 210009; Jiangsu Meteorological Observatory, Nanjing 210008 Jiangsu Meteorological Institute, Nanjing 210009; Jiangsu Meteorological Service, Nanjing 210008)
摘要
图/表
参考文献
相似文献
本文已被:浏览 397次   下载 214
投稿时间:2017-05-19    修订日期:2018-04-28
中文摘要: 利用江苏省70个自动观测站和365个交通气象观测站资料,对2016年2月11日夜间至12日上午出现在江苏的一次大范围强浓雾天气过程进行分析。结果表明:这次强浓雾过程具有爆发性形成和加强的特征,大部分站点从1000 m以上快速下降形成强浓雾,且部分站点存在多次爆发增强现象;夜间天空打开,长波辐射降温作用加强,是大范围强浓雾形成和爆发性发展的一个重要原因;同时,雾前降雨为本次强浓雾的形成创造了基础条件,也是日出后部分站点由于水汽蒸发增强而导致雾爆发性增强的直接原因;另外,雾前和雾期间近地层强逆温的存在为雾的爆发性发展提供了稳定的大气层结条件,而逆温顶附近低空急流的形成,也一定程度上促进了逆温的维持和加强,利于雾的爆发性发展。
Abstract:Based on meteorological data from 70 automatic weather stations and 365 traffic meteo rological observation stations of Jiangsu Province, a heavy fog process that occurred in Jiangsu in 11-12 February 2016 is investigated. The results show this fog process features that the fog formed and intensified explosively. At most stations, the dense fog formed rapidly with the visibility dropping directly from 1000 m above, and there was multiple burst enhancement phenomena in some areas. Along with the opened sky at night, the long wave radiation cooling also strengthened, which was an important cause for the formation and explosive development of the wide range of heavy fog. Meanwhile, the prophase rainfall provided basic conditions for the formation of the heavy fog, and also was the direct cause of the enhanced evaporation and explosive increase of heavy fog at some sites after sunrise. In addition, strong inversion temperature provided stable atmospheric conditions for the explosive development of fog. The low level jet near the top of inversion temperature promoted the maintenance and enhancing of the strong inversion, which played an important role in the explosive development of heavy fog.
文章编号:     中图分类号:    文献标志码:
基金项目:国家重点研发计划(2016YFC0201901和2016YFC0203303)及国家自然科学基金项目(41575135)共同资助
引用文本:
严文莲,朱承瑛,朱毓颖,刘端阳,濮梅娟,2018.江苏一次大范围的爆发性强浓雾过程研究[J].气象,44(7):892-901.
YAN Wenlian,ZHU Chengying,ZHU Yuying,LIU Duanyang,PU Meijuan,2018.Study on a Wide Range of Explosive Heavy Fog in Jiangsu[J].Meteor Mon,44(7):892-901.