Abstract:Using air pollution data and meteorological data published by the local authorities, heavy air pollution, which means the Air Pollution Index >200, were closely examined in Beijing by means of time series analysis. There were 4 types of heavy air pollution in Beijing: namely the meteorological stagnant-accumulated, the sand-dust caused, the combined, and the special, which happened 69, 53, 23 and 6 times respectively, during 2000~2010. The four types of heavy air pollution presented in different seasons. Most of the sand-dust caused occurred in spring and the stagnant-accumulated mainly in fall and winter.There were yearly variations in the occurrences of the heavy air pollution in Beijing. Since sand-dust storms were in an active period, the occurrence became frequent during 2000~2002, then fell off during 2003~2005, followed by a peak in 2006 due to both dust-storm and large-scale construction for the 2008 Olympic facilities. In 2007, the stagnant-accumulated remained at a relatively high level, and in 2008 it occurred the least times because of effective countermeasures taken before and during the Olympic Games to cut down emission. Nevertheless, the present of stagnant-accumulated bounced back slowly afterwards although its occurrence was still less than before 2008. Heavy air pollution in Beijing was not only a regional scale problem, but also affected by local pollution sources. The heavy pollution at Dingling Station was all sand-dust caused, and its frequency dropped obviously at Gucheng Station in accordance with the cutting of producing and finally moving out of a big steel plant nearby, while it became more severe at Aoti Station because of the extensive city construction around.
李令军, 王英, 李金香, 辛连忠, 金军. 2000~2010北京大气重污染研究[J]. 中国环境科学, 2012, 32(1): 23-30.
LI Ling-Jun, WANG Ying, LI Jin-Xiang, XIN Lian-Zhong, JIN Jun. The analysis of heavy air pollution in Beijing during 2000~2010. CHINA ENVIRONMENTAL SCIENCECE, 2012, 32(1): 23-30.