沙漠与绿洲气象2017，Vol.11Issue(1)：11-21,11.DOI:10.12057/j.issn.1002-0799.2017.01.002
华东地区气溶胶分布和变化特征研究
A Study of the Characteristics of Aerosol Distribution and Variation in Eastern China
摘要
Abstract
The characteristics of spatial and temporal distributions of aerosol optical depth(AOD), fine mode fraction (FMF) and aerosol index (AI) during 2005-2014 in Eastern China were analyzed based on the aerosol products of Moderate Resolution Imaging Spectroradiometer(MODIS) and Ozone Monitoring Instrument (OMI). The method of potential source contribution function (PSCF)was applied to find the possible sources of AOD and AI in this region under different air mass conditions. The results showed that there was a relative large discrepancy existing in the spatial and temporal distributions of AOD, FMF and AI. The high value of the average AOD and AI during 2005-2014 distributed in the northern area of Eastern China. However, the high value of the average FMF spread across the southern part of Eastern China. AOD in this period firstly increased and then decreased, and the fluctuation of FMF was not obvious while AI presented a rising trend. There was a significant seasonal variation in AOD in eastern China. The average values of AOD in spring and summer were obviously higher than that in autumn and winter. In the northern and central regions of Eastern China, AOD reached the maximum of above 0.8 in summer due to the high relative humidity. However, AOD value of the southern region of Eastern China was between 0.2 and 0.4 because of the high-frequency precipitation in summer. Different from AOD seasonal variation, FMF of 0.58 was highest in summer, and its lowest value of 0.26 appeared in spring. While the average value of AI (0.63) was the largest in winter, and the lowest value of 0.27 appeared in summer. The result of PSCF showed that local emission was the dominate source of AOD, and the short distance transport of aerosols from Henan, Hubei, Hunan and so on could also affect AOD in Eastern China. Local emission and long-range transport from the north were the main sources of AI, and there was also influence coming from short distance transport of aerosols from Henan, Hubei and the surrounding provinces and cities.关键词
气溶胶光学厚度(AOD)/细粒子比例(FMF)/气溶胶指数(AI)/潜在源分析(PSCF)Key words
aerosol optical depth (AOD)/fine mode fraction (FMF)/aerosol index(AI)/source contribution function(PSCF)分类
天文与地球科学引用本文复制引用
刘璇,朱彬,关学锋,刘慧敏,袁亮..华东地区气溶胶分布和变化特征研究[J].沙漠与绿洲气象,2017,11(1):11-21,11.基金项目
中亚大气科学研究基金项目(CASS201708) （CASS201708）
自治区区域协同创新项目(2016e02104) （2016e02104）
国家自然科学基金项目(91544229)资助. （91544229）
