The development and assessment of a flexible inversion algorithm for aerosol property retrieval combining passive multiangle multispectral intensity and polarization measurements

Alexandra Tsekeri; Barry Gross; Fred Moshary; Samir Ahmed

doi:10.1117/12.826215

11 August 2009 The development and assessment of a flexible inversion algorithm for aerosol property retrieval combining passive multiangle multispectral intensity and polarization measurements

Alexandra Tsekeri, Barry Gross, Fred Moshary, Samir Ahmed

Author Affiliations +

Proceedings Volume 7461, Polarization Science and Remote Sensing IV; 74610W (2009) https://doi.org/10.1117/12.826215
Event: SPIE Optical Engineering + Applications, 2009, San Diego, California, United States

Abstract

Quantifying aerosols on a global scale is extremely important due to their strong but anomalous impact on the global climate. Traditionally, the aerosols retrievals use only the intensity measurements of the scattered light. However, these measurements are less sensitive to aerosol type and also suffer contamination from ground surfaces. It is with these limitations in mind that we plan to improve the quality and scope of aerosol retrieval by making use of soon to be available polarimetric sensors such as the Aerosol Polarimetry Sensor (APS) on the GLORY satellite and combine them with other available datasets such as lidar data from the CALIPSO satellite for vertical profiling, and high-spatialcoverage intensity measurements from MODIS. To handle these extremely large sensor data sets, we will explore the capabilities of various statistical methods and even combine them to create inversion algorithms that will work best. Up to now, we worked with the simplest case, the single-scattering approximation and built a retrieval algorithm using multi-angular, multi-wavelength simulated measurements of intensity and polarization. The inversion techniques we used are the optimal estimator and the neural networks.

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Alexandra Tsekeri, Barry Gross, Fred Moshary, and Samir Ahmed "The development and assessment of a flexible inversion algorithm for aerosol property retrieval combining passive multiangle multispectral intensity and polarization measurements", Proc. SPIE 7461, Polarization Science and Remote Sensing IV, 74610W (11 August 2009); https://doi.org/10.1117/12.826215

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