摘要
2014年12月28日-2015年1月5日重庆市发生了一次大范围、持续性的重霾污染天气。文章利用常规污染物数据和MODIS遥感数据,结合HYSPLIT轨迹模式对此次污染进行分析。研究表明,此次重霾污染时段首要污染物PM_(2.5),主要以人为源排放为主。同时近地面不利于污染物扩散的气象条件以及大范围秸秆集中燃烧是本次持续性重污染的主要原因。
A heavy haze episode from 28 th Dec 2014 to 5 th Jan 2015 in Chongqing was analyzed.The pollution characteristic and mechanism of the haze event was indicated by discussing the concentrations variation of pollutants,the AOD from MODIS and the backtrajector from HYSPLIT.It was found that PM_(2.5)was the primary pollutant and emitted from man-made sources.In addition,the stable inversion layer was not conducive to the diffusion of pullutants,and the burning of straw in south and southwest of Chongqing could be the main reason for the heavy haze episode.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2016年第S2期8-13,共6页
Environmental Science & Technology
基金
基金项目:重庆市科委应用开发类研究(cstc2014yykfA20005)
关键词
重庆
霾
MODIS
后向轨迹
Chongqing
haze
MODIS
back trajectory analysis
