2013 年1月份我国中东部地区严重雾霾的成因分析.pdf

文档介绍：2013 年 1 月份我国中东部地区严重雾霾的成因分析
侯振奎王斌栗敬仁
(民航河南空管分局)
摘要:本文用 1961-2013 年 NCEP 再分析资料,统计了全国 2013 年 1 月份大气稳定度、风速、相对湿度等气象要
素,并求它们的多年平均和距平值,与 2013 年严重雾霾天气的区域做对比,分析今年 1 月份我国中东部地区严重
雾霾天气的成因。结果发现,今年 1 月份我国中东部地区的大气层结较为稳定,有利于污染物和水汽在大气低层积
聚;影响我国中东部地区的强冷空气活动偏少,地面风速小,不利于污染物的扩散和稀释,对雾霾的形成较为有利;
另外,我国上空西南暖湿气流输送较强,这股暖湿气流沿西南路径将丰沛的水汽输送到我国中东部地区,并且能到
达北京附近,使这些地区湿度明显增加,非常有利于雾霾天气形成。
关键词:雾霾;大气稳定度;风速;相对湿度

The cause of central and eastern China’s serious mist and haze in Jan 2013
Hou Zhenkui,Wang Bin
Abstract:Based on NCEP Reanalysis DATA from 1961 to 2013,the atmospheric stability,wind speed and air relative
humidity of Jan 2013 and monthly long term mean are results show that the atmosphere at central and
eastern China is relatively stable which promote air pollutant congest at the near-surface layer. The number of strong cold
air occurrences affecting central and eastern China is less than normal years and surface wind speed is weaker than normal
years which obstructed decrease the concentration of air pollutant and promoted the formation of the mist and
addition,warm and moist air on upper layer from southwest is stronger than normal years,which bringed abundant water
vapor from southwest to central and eastern China and made this area’s relative humidity higher than normal
factors promoted the formation of mist and haze.
Key wo