拉萨市2009-2012年桑烟光学厚度评价

Optical Thickness Evaluation of Mulberry Smoke in Lhasa from 2009 to 2012

采用太阳光度计对拉萨市2009-2012年桑烟进行了气溶胶光学厚度的测量、不同季节气溶胶以及空气污染指数相关性分析。结果显示拉萨宗教节日期间煨桑区域大气气溶胶光学厚度值最高超过3.0,是平常日的10倍以上,与空气污染指数相关性超过0.59。大量煨桑引起的浓烟是造成拉萨空气污染的原因之一,对长期居住在煨桑区域的人造成健康影响。

The aerosol optical thickness measurement, different seasons comparison and air pollution index correlation analy-sis of mulberry smoke in Lhasa were done with sun photometer during religious festivals from 2009 to 2012. Results showed that the values of regional atmospheric aerosol optical thickness exceed 3.0 for the burning areas during the religious festivals, which is 10 times more than that in normal days, and its correlation with air pollution index was more than 0.59. Thick smoke from burning a large amount of incense is one of the reasons for air pollution in Lhasa, which would cause negative health impacts on people who are long term residence in the burning incense regions.