Relationship between atmospheric pollution processes and synoptic pressure patterns in northern China

被引:216
作者
Chen, Z. H. [1 ]
Cheng, S. Y. [1 ]
Li, J. B. [2 ]
Guo, X. R. [1 ]
Wang, W. H. [1 ]
Chen, D. S. [1 ]
机构
[1] Beijing Univ Technol, Coll Environm & Energy Engn, Beijing 100022, Peoples R China
[2] Univ No British Columbia, Environm Engn Program, Prince George, BC V2N 4Z9, Canada
关键词
air pollution index (API); air pollution process; northern China; synoptic pressure patterns;
D O I
10.1016/j.atmosenv.2008.03.043
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The air pollution index (API) sequences in 10 cities in northern China and the synoptic pressure patterns during autumn and winter from 2002 to 2006 were analyzed with diagnostic and statistical methods. The results showed that the air qualities in northern China had a prominent correlation with the pressure systems. It revealed that (a) the increasing phase of API was associated with high pressure and the successive low pressure, (b) the preceding part of front (i.e. the retral part of low pressure) was associated with the maximum of API values during a cycle Of air Pollution process, (c) the pressure systems with high gradient led to the decrease of API, and (d) the synoptic pressure patterns and their evolvements were the main causes of regional air pollution processes. These relations can be used to analyze the Variation characteristics and mechanism of regional atmosphere pollution process, and provide important basis for the qualitative prediction, control, and management of regional air Pollution problems. (C) 2008 Published by Elsevier Ltd.
引用
收藏
页码:6078 / 6087
页数:10
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