基于偏振数据反演北京地区气溶胶光学厚度及其时空特征的研究

利用POLDER偏振资料反演了北京市2005～2010年的气溶胶光学厚度,并利用AERONET北京站点提供的观测资料证明了结果的可靠性,通过对反演结果的统计和对比分析研究了气溶胶光学厚度的时间及空间变化特征。结果表明,在空间上,气溶胶光学厚度表现为东南部较高,西北部相对较低,呈现出由东南向西北降低的趋势。在时间上,研究时段内气溶胶光学厚度随着时间的推移呈降低趋势；不同月份的气溶胶光学厚度也有较明显的差异,在7月达到全年中的峰值,为0.65, 11月达到最低值0.2；不同季节的气溶胶光学厚度表现为春夏季节大于秋冬季节,夏季最大,秋季最小。

Abstract

The aerosol optical thinkness (AOT) during 2005～2010 over Beijing was investigated based on POLDER data and validated using AERONET monitoring data. The result was used to analyze the temporal variation and spatial distribution of AOT. The statistic result showed that high values were observed in southeast while low values were in northwest. The AOT decreased slowly year by year during 2005～2010. Monthly average AOT had significant differences, reaching the maximum 0.65 and the minimum 0.2 in July and November, respectively. The AOT in spring and summer was higher than that in autumn and winter, and it reached the maximum and minimum in summer and autumn respectively.

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邵培, 麻金继, 洪超. 基于偏振数据反演北京地区气溶胶光学厚度及其时空特征的研究[J]. 大气与环境光学学报, 2012, 7(2): 108. SHAO Pei, MA Jin-ji, HONG Chao. Spatial-Temporal Features of Aerosol Optical Thickness on Polarization Information in Beijing Area[J]. Journal of Atmospheric and Environmental Optics, 2012, 7(2): 108.

基于偏振数据反演北京地区气溶胶光学厚度及其时空特征的研究

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