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蔡宏珂, 周任君, 傅云飞, 郑媛媛, 王英俭. CALIOP对一次秸秆焚烧后气溶胶光学特征的探测分析[J]. 气候与环境研究, 2011, 16(4): 469-478. DOI: 10.3878/j.issn.1006-9585.2011.04.07
引用本文: 蔡宏珂, 周任君, 傅云飞, 郑媛媛, 王英俭. CALIOP对一次秸秆焚烧后气溶胶光学特征的探测分析[J]. 气候与环境研究, 2011, 16(4): 469-478. DOI: 10.3878/j.issn.1006-9585.2011.04.07
Cai Hong ke, Zhou Renjun, Fu Yunfei, Zheng Yuanyuan, Wang Yingjian. Aerosol Lidar with Orthogonal Polarization Detection of Aerosol Optical Properties after a Crop Burning Case[J]. Climatic and Environmental Research, 2011, 16(4): 469-478. DOI: 10.3878/j.issn.1006-9585.2011.04.07
Citation: Cai Hong ke, Zhou Renjun, Fu Yunfei, Zheng Yuanyuan, Wang Yingjian. Aerosol Lidar with Orthogonal Polarization Detection of Aerosol Optical Properties after a Crop Burning Case[J]. Climatic and Environmental Research, 2011, 16(4): 469-478. DOI: 10.3878/j.issn.1006-9585.2011.04.07

CALIOP对一次秸秆焚烧后气溶胶光学特征的探测分析

Aerosol Lidar with Orthogonal Polarization Detection of Aerosol Optical Properties after a Crop Burning Case

  • 摘要: 采用星载激光雷达 (Cloud-Aerosol LIdar with Orthogonal Polarization,CALIOP)资料研究了2008年6月2日华东秸秆焚烧排放气溶胶的光学特性,并与2006~2008年统计结果进行了对比。结果表明:1)CALIOP能够有效探测到气溶胶层,探测结果符合生物质燃烧气溶胶的典型特征;气溶胶分布及廓线特点可以由火点分布及大气环流形势做出解释。2)个例中气溶胶光学特性廓线与该地区2006~2008年全年平均和夏季平均都存在一定差异。个例中后向散射系数廓线的峰值显示出气溶胶垂直分布结构,对应高度上的退偏振率比平均偏大而双波长比则偏小,表明秸秆焚烧源气溶胶层由大量非球形的细粒子组成。3)个例中气溶胶粒子谱特征与3年夏季平均接近而与3年平均差别很大,显示出个例的季节特征。更多个例的统计分析和地基观测的验证有助于了解秸秆焚烧源气溶胶的普遍规律。

     

    Abstract: Cloud-Aerosol LIdar with Orthogonal Polarization (CALIOP) remote sensing data is used to analyze the optical properties of aerosols released from burning straw in East China on 2 June 2008. And a comparison is made between the case and 3-year statistics during 2006~2008. It is showed that the aerosols were effectively detected by CALIOP, and the detection data is in accordance with the typical characteristics of biomass burning. The distribution and profile features of aerosols can be explained according to the locations of the fire points and atmospheric circulation. And secondly, it is also shows that the optical property in the case is different from 3-year June-July-August average and 3year average of this area. Backscatter profiles in the case illustrate the vertical distribution of aerosols. In the corresponding altitude depolarization ratio is larger than the average, while color ratio is lower than the average, which suggests that biomass burning aerosol layers are constituted of numerous nonspherical fine particles. Thirdly, the optical property describes the seasonal feature instead of annual feature. More case studies and observations are valuable to find out the universal characteristics.

     

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