Evaluation of Junge power law as a tool for atmospheric correction validation

Amadou I. Bokoye; Richard Santer; Nadege Martiny; Jerome Vidot; Xavier Meriaux

doi:10.1117/12.510828

16 February 2004 Evaluation of Junge power law as a tool for atmospheric correction validation

Amadou I. Bokoye, Richard Santer, Nadege Martiny, Jerome Vidot, Xavier Meriaux

Proceedings Volume 5235, Remote Sensing of Clouds and the Atmosphere VIII; (2004) https://doi.org/10.1117/12.510828
Event: Remote Sensing, 2003, Barcelona, Spain

Abstract

Spatial remote sensing atmospheric correction algorithms validation remains a challenge particulary over land and coastal environment. To assess this type of algorithm in the case of MERIS scheme, we propose a methodology based on the use of in-situ extinction and sky measurements from the world-wide Sun radiometer network AERONET. The spectral dependency in the blue and red derived from the extinction measurements is used to parameterize an aerosol model defined by the Jung power law size distribution in a first step and a chemical composition represented by a refractive index. This model is used to compute the phase function, a main input to a radiative transfer code (successive order of diffusion based) that allows to simulate the atmospheric parameters (radiances, transmittances). A comparison between the diffuse transmittance from sky measurements and that simulated allow to check the validity of the proposed method. The context of the study is calibration and validation in remote sensing using only the radiative properties of the atmosphere. A sensitivity study of the method to various parameters and an error budget will be reported.

Citation Download Citation

Amadou I. Bokoye, Richard Santer, Nadege Martiny, Jerome Vidot, and Xavier Meriaux "Evaluation of Junge power law as a tool for atmospheric correction validation", Proc. SPIE 5235, Remote Sensing of Clouds and the Atmosphere VIII, (16 February 2004); https://doi.org/10.1117/12.510828

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