气象与环境学报2018，Vol.34Issue(2)：52-60,9.DOI:10.3969/j.issn.1673-503X.2018.02.007
2015年上海地区空气质量状况及其与气象条件的关系
Relationships between air quality and meteorological conditions in Shanghai in 2015
摘要
Abstract
Using the air quality data from 2001 to 2015 and the meteorological data from 2014 to 2015,the air quality status,variation characteristics,and the corresponding meteorological factors in Shanghai in the context of strong El Nin~o atmospheric circulation in 2015 were analyzed.The results show that average annual concentrations of PM10and SO2in 2015 in Shanghai reach the lowest values during the recent 15 years,and that of NO2reaches its second lowest value.The air pollution situation in Shanghai has shifted from the traditional coal burning pollu-tants,such as sulfur,nitrogen,and PM10,to a compound pollution represented by PM2.5and photochemical pollu-tion represented by O3.Among the three first-tier cities,the excellent and good rate of air quality and average con-centrations of PM2.5and PM10in 2015 in Shanghai are all between those in Beijing and Guangzhou.The average annual concentrations of NO2and O3in Shanghai are the lowest,and that of SO2in Shanghai is the highest.The concentration of PM2.5in Shanghai in 2015 is higher than that in 2014.Compared with 2014,the concentration of PM2.5in Shanghai decreases significantly in spring and summer in 2015,and those in the easily-polluted seasons in-cluding January,February,October,November and December increase significantly.This is mainly due to the lower wind speed,fewer times of continuous small winds,stronger in the inversion intensity,more times of inverse tem-perature,and increasing intensity in the west wind transport in the easily-polluted seasons in 2015.Influenced by the strong El Nin~o event,a weaker cold air activity is formed due to the polar vortex contraction in the northern hemisphere,strengthening in the Eurasian Zonal Circulation,and weakening and eastward in the East Asia Trough in the pollution season.It provides an atmospheric circulation background for the bad air quality condition in 2015 in Shanghai.关键词
易污染季节/空气质量/气象条件/厄尔尼诺事件/大气环流Key words
Easily-polluted season/Air quality/Meteorological condition/El Nin~o event/Atmospheric circulation分类
资源环境引用本文复制引用
毛卓成,马井会,瞿元昊,余钟奇,周广强,许建明..2015年上海地区空气质量状况及其与气象条件的关系[J].气象与环境学报,2018,34(2):52-60,9.基金项目
国家重点研发计划课题(2016YFC0201903)、华东区域气象科技协同创新基金合作项目(QYHZ201401)和上海市科技开发项目(MS201605)共同资助. （2016YFC0201903）
