摘要
利用OMI(ozone monitoring instrument)数据,研究了2004—2012年中国地区,以及北京、兰州、上海、重庆、广州等城市的NO2柱密度月均值演变,发现近8年特别是"十二五"后中国NO2柱密度月均值仍呈增加趋势。各城市NO2柱密度月际演变具有明显的周期性特征,分析表明,海平面气压场的月均值变化与污染源排放量和NO2存在时间具有一致性,是导致区域及城市NO2柱密度显著增高的主要原因之一。基于各城市的NO2污染源数据,对比分析了北京、上海、重庆、天津NO2排放源的行业差异,指出根据天气背景结合NO2排放源特征是NO2污染控制的有效途径。
The NO2 column density derived from ozone monitoring instrument （OMI） observations was used to study the trend and monthly variability of China as a whole and Beijing, Lanzhou, Shanghai, Chongqing and Guangzhou cities. The findings indicated that increasing trend of NO2 column density was obvious in recent eight years especially after the 12th Five-year Plan period. There existed obvious periodic characteristics for each city＇s NO2 column density and the monthly variability of temporal mean sea level pressure was one of the main reasons of obvious increasing of.regional and urban NO2 column density. Based on the polluting sources of NO2 in Beijing, Shanghai , Chongqing and Tianjin, the sector difference of the sources in each city was analyzed, and it was pointed out that one effective way to control the NO2 pollution is to combine the weather pattern and the characteristics of NO2 emission sources.
出处
《环境工程技术学报》
CAS
2013年第4期331-336,共6页
Journal of Environmental Engineering Technology
基金
中国环境科学研究院基本科研业务专项(2010KYYW08)
关键词
NO2
大气遥感
天气型
NO2
atmospheric remote sensing
weather pattern
