%0 Journal Article
%T The key factor research of haze with the combined application of the multi element data<br>多元观测资料融合应用的灰霾天气关键成因研究
%A MAO Minjuan
%A LIU Houtong
%A XU Honghui
%A PU Jingjiao
%A <br>毛敏娟
%A 刘厚通
%A 徐宏辉
%A 浦静姣
%J 环境科学学报
%D 2013
%I 
%X Based on the comprehensive observations of the complex atmospheric pollutions in Hangzhou, and the observations at the Linan regional background station, together with the DMSP/OLS data and the routine meteorological data, the leading factors of the haze were investigated from different perspectives. Through the comparisons between the haze day distribution and the contemporary night light intensity distribution from DMSP/OLS, as well as the temporal evolution of average annul haze day in Zhejiang province, it was demonstrated that the unscientific social activities were the most predominant reasons of the more and more serious haze pollution from the aspects of spatial distribution and the interdecadal change. By the comparison analysis of the observational data in Hangzhou and Linan, it was confirmed that the key impacting factors of the haze formation are carbon black, NO2, SO2, which can increase fine particle density, but not dust particles or other disposable aerosols. The desulfurization is an effective method to reduce SO2 emission, but it further highlights the role of the nitrogen precursor in atmosphere pollution. Meteorological conditions are the external trigger causes of the haze formation. Because of the subsidence flow and stable atmosphere, the haze occurrence probability under subtropical high reached 64.5%, higher than those in other synoptic situations. In addition, the surface meteorological elements, such as wind speed, temperature, relative humidity, air pressure, precipitation, temperature difference and the pre-day PM10 concentration, all present certain degree influence on the intraday pollutant concentration, but the correlations between precipitation, relative humidity, wind speed and the PM10 are more outstanding, which means that these three elements are the key meteorological factors of the haze formation.
%K multi element data
%K haze
%K key factor<br>多元观测资料
%K 灰霾天气
%K 关键成因
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3ff3aba7486768130c3ff830376f43b398e0c97f0ff2dd53&cid=a7ca601309f5fed03c078bce383971dc&jid=03a55e61a8750acac6af81ef9e2ac838&aid=523711b464e4ffdf9c8b21d6d5acf99e&yid=ff7aa908d58e97fa&vid=27746bceee58e9dc&iid=38b194292c032a66&sid=edaefedac1dccba4&eid=fcb110411b6339d8&journal_id=0253-2468&journal_name=环境科学学报&referenced_num=0&reference_num=47