A study of air pollution of city clusters
A study of air pollution of city clusters
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城市群空气污染状况研究
DOI：
10.1016/j.atmosenv.2011.03.018
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发表时间：
2011-06-01
影响因子：
5
通讯作者：
Shi, Jinhui
中科院分区：
文献类型：
--
作者：
Gao, Huiwang;Chen, Jing;Shi, Jinhui
本文利用2004年6月至2007年6月中国81个城市的每日空气污染指数（DAPI）研究了城市群的空气污染状况。聚类分析结果表明，我国中东部71个城市的DAPI可分为两个区域，即沿沿着及其东延至淮河的南北区域。两种DAPI制度之间的分界线重复的分水岭的北方和南方气候区的分界线和DAPI的统计负相关的降雨量，这表明降水可以发挥重要作用，在决定这两个制度。根据大气气溶胶光学厚度（ADD）、NO2和2006年中国大气污染物排放清单等遥感数据，将两个DAPI区域划分为7个城市群，主要与大气污染物排放和地理分布相关。北方三个城市群的DAPI呈现出相似的季节变化趋势，而南方四个城市群的DAPI则有所不同。春季沙尘暴的爆发和空间加热导致的排放增加影响了北方城市群的DAPI。虽然秋季和冬季南部城市群的用电量有所下降，但报告的高DAPI是降雨量减少和分散不良的结果。中国西部七个城市因其独特的自然环境而被分为两类。三个城市没有被分配到任何城市群。(C)2011爱思唯尔有限公司保留所有权利。
In this study, the Daily Air Pollution Index (DAPI) of 81 cities in China from June 2004 to June 2007 was used to study the air pollution of city clusters. The cluster analysis results show that the DAPI of 71 cities in central and eastern China is divided into two regimes, the north regime and the south regime along the Qinling Mountain and its eastern extension to Huaihe River. The demarcation line between the two DAPI regimes duplicates the demarcation line of the watersheds of the northern and southern climate regions and the DAPI were statistically negatively correlated to the amount of rainfall, suggesting that precipitation could play an important role in determining the two regimes. The two DAPI regimes are further divided into seven city clusters mainly associated with emissions of air pollutants and geographical distributions, supported by remote sensing data of aerosol optical depth (ADD), NO2 and emission inventories of air pollutants in China in 2006 reported in the literature. DAPI of three city clusters in the north regime exhibited a similar seasonal trend, which was different from the four city clusters in the south regime. Outbreak of dust storms in spring and an increase in emissions due to space-heating impacted the DAPI of the northern city clusters. Although the consumption of electricity decreased in the southern city clusters in the fall and winter, the reported high DAPI were the result of less rainfall and poor dispersion. Seven cities in western China were classified into two groups associated with their unique nature environments. Three cities were not allocated to any of the city clusters. (C) 2011 Elsevier Ltd. All rights reserved.