Anthropogenic aerosol optical depth during days of high haze levels in the Beijing winter[J]. Journal of Remote Sensing, 2013,17(4):993-1007. DOI: 10.11834/jrs.20133071.
we estimated anthropogenic contributions to Aerosol Optical Depth ( AOD) during days of high haze level using ground-based measurements in Beijing ( January 2009 and 2013) . We compared the anthropogenic AOD ( AODan ) with optical parameters determined directly from aerosol samples. The results showed: ( 1) The monthly mean AODan ( at 440 nm) of January was 0.88 in 2009 and 0. 44 in 2013; ( 2) The proportion of days where contributions from AODan dominated in January 2013 was 86. 7%
higher than that in January 2009 ( 62. 5% ) ; ( 3) The ratio of the AODan to total AOD ( at 440 nm) was about 88% in January 2013
indicating the importance of the anthropogenic aerosol contribution to haze pollution; ( 4) The two haze events studied featured contributions from accumulation of local pollutants and pollutants transported from surrounding areas of Beijing.
关键词
人为气溶胶光学厚度灰霾气溶胶细模态比例地基气溶胶
Keywords
anthropogenic aerosol optical depthhazeaerosol accumulation mode fractionaerosol from ground-based observation