漢藏語研究 : 龔煌城先生七秩壽慶論文集 = Studies on Sino-Tibetan languages : papers in honor of professor Hwang-cherng Gong on his seventieth birthday
漢藏語研究 : 龔煌城先生七秩壽慶論文集 = Studies on Sino-Tibetan languages : papers in honor of professor Hwang-cherng Gong on his seventieth birthday
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汉藏语言研究：纪念龚黄成教授七十寿辰的论文
DOI：
10.1117/12.738287
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发表时间：
2004
影响因子：
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通讯作者：
何 大安
中科院分区：
文献类型：
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作者：
林 英津;徐 芳敏;李 存智;孫 天心;楊 秀芳;何 大安
气溶胶遥感反演算法还存在一些有待解决的问题。例如，由于难以探测到陆地上吸收的碳质和粉尘气溶胶等气溶胶，经常会出现气溶胶类型选择的错误。POLDER极化资料对估计陆地区域的气溶胶信息也很有用。本工作旨在结合模型模拟对卫星检索程序进行改进。数值模拟结果作为大气中吸收性气溶胶存在的先验信息。在实践中，我们的程序应用于1997年4月的POLDER观察期。基于地面太阳光度测量AOT与pm2.5采样的关系，反演了三个波长的气溶胶光学厚度，并将其应用于估算细模气溶胶的质量浓度。研究发现，1997年4月东南亚地区生物质燃烧气溶胶负荷较大。
The retrieval algorithm for aerosol remote sensing has still some problems to be solved. For example, miss-leading of aerosol type selection has often happened due to the difficulties to detect the absorbing aerosols, such as carbonaceous and dust aerosols, over land. The POLDER polarization data are useful to estimate the aerosol information even over land region. This work intends to modify the satellite retrieval procedure by combining the model simulations. The result of numerical simulations is used as a priori information of existence of absorbing aerosols in the atmosphere. Our procedure, in practice, is applied to the POLDER observation period in April, 1997. As results, aerosol optical thickness at three wavelengths are retrieved, and then they are applied to estimate the mass concentration of fine mode aerosols based on the relationship between AOT by ground based sun photometry and PM2.5sampling. It is found that in April of 1997 the bio-mass burning aerosols are heavily loaded over South East Asia.