The inter-comparison of major satellite aerosol retrieval algorithms using simulated intensity and polarization characteristics of reflected light
The inter-comparison of major satellite aerosol retrieval algorithms using simulated intensity and polarization characteristics of reflected light
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DOI：
10.5194/amt-3-909-2010
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发表时间：
2009-12
影响因子：
3.8
通讯作者：
A. Kokhanovsky;J. Deuze;D. Diner;O. Dubovik;F. Ducos;C. Emde;M. Garay;R. Grainger;A. Heckel;M. Herman;I. Katsev;J. Keller;R. Levy;P. North;A. Prikhach;V. Rozanov;A. Sayer;Y. Ota;D. Tanré;G. Thomas;E. Zege
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文献类型：
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作者：
A. Kokhanovsky;J. Deuze;D. Diner;O. Dubovik;F. Ducos;C. Emde;M. Garay;R. Grainger;A. Heckel;M. Herman;I. Katsev;J. Keller;R. Levy;P. North;A. Prikhach;V. Rozanov;A. Sayer;Y. Ota;D. Tanré;G. Thomas;E. Zege
抽象的。从空间遥感气溶胶是一个具有挑战性的，通常欠确定的检索任务，需要许多假设，以相对于气溶胶和表面模型。因此，先验信息的质量在任何反演过程中都起着核心作用（除了云屏蔽程序和前向辐射传输模型，最准确的是应包括光偏振和分子-气溶胶耦合的处理）。本文研究了利用星载光学测量数据确定光谱气溶胶光学厚度的各种算法的性能。这些算法基于各种类型的测量（光谱、角度、偏振或这些的某种组合）。它被证实，多角度光谱偏振测量提供了更强大的约束相比，单独的光谱强度测量，特别是那些在一个单一的视角获得，并依赖于先验假设的粒子相位函数在检索过程中。
Abstract. Remote sensing of aerosol from space is a challenging and typically underdetermined retrieval task, requiring many assumptions to be made with respect to the aerosol and surface models. Therefore, the quality of a priori information plays a central role in any retrieval process (apart from the cloud screening procedure and the forward radiative transfer model, which to be most accurate should include the treatment of light polarization and molecular-aerosol coupling). In this paper the performance of various algorithms with respect to the of spectral aerosol optical thickness determination from optical spaceborne measurements is studied. The algorithms are based on various types of measurements (spectral, angular, polarization, or some combination of these). It is confirmed that multiangular spectropolarimetric measurements provide more powerful constraints compared to spectral intensity measurements alone, particularly those acquired at a single view angle and which rely on a priori assumptions regarding the particle phase function in the retrieval process.