Assessment of the cloud adjacency effect on retrieval of ground surface reflectance from MODIS satellite data for a surface area near Lake Baikal

M. V. Tarasenkov; M. V. Engel; A. S. Bogdanova; V. V. Belov

doi:10.1117/12.2690973

17 October 2023 Assessment of the cloud adjacency effect on retrieval of ground surface reflectance from MODIS satellite data for a surface area near Lake Baikal

M. V. Tarasenkov, M. V. Engel, A. S. Bogdanova, V. V. Belov

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Proceedings Volume 12780, 29th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 127801E (2023) https://doi.org/10.1117/12.2690973
Event: XXIX International Symposium "Atmospheric and Ocean Optics, Atmospheric Physics", 2023, Moscow, Russian Federation

Abstract

The cloud adjacency effect (CAE) on retrieved values of ground surface reflectance is assessed. The assessment method employs the software for statistical simulation of radiation transfer in the atmosphere with a stochastic cloud field including a deterministic gap of a given radius, and then the simulated results are used in an interpolation formula. Masks of cloudless pixels, for which the cloud adjacency effect changes retrieved reflectances by values greater than 0.005, are constructed. The coefficients of correlation of the CAE radius with the initial data show that the major contributors are the cloud optical thickness, cloud cover index, and surface reflectance.

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M. V. Tarasenkov, M. V. Engel, A. S. Bogdanova, and V. V. Belov "Assessment of the cloud adjacency effect on retrieval of ground surface reflectance from MODIS satellite data for a surface area near Lake Baikal", Proc. SPIE 12780, 29th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 127801E (17 October 2023); https://doi.org/10.1117/12.2690973

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KEYWORDS

Clouds

MODIS

Reflectivity

Satellites

Sun

Interpolation

Monte Carlo methods

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