ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa
CURRENT PROBLEMS IN REMOTE SENSING OF THE EARTH FROM SPACE

  

Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2026, V. 23, No. 1, pp. 349-362

Effect of cloudiness on the correspondence characteristics between MODIS/Terra measurements and AERONET observations of aerosol optical thickness of the atmosphere

A.E. Belov 1 , N.V. Pankratova 1 , V.S. Rakitin 1 , J.V. Kiseleva 1 
1 A.M. Obukhov Institute of Atmospheric Physics RAS, Moscow, Russia
Accepted: 05.12.2025
DOI: 10.21046/2070-7401-2026-23-1-349-362
The paper analyzes and compares the data of atmospheric aerosol optical thickness measurements by the MODIS (Moderate Resolution Imaging Spectroradiometer) satellite spectrometer, Collection 6.1, Dark Target Deep Blue Combined Mean parameter for a wavelength of 550 nm, and 30 ground-based spectrophotometers of the AERONET network, measurement level 1.5 (AErosol RObotic NETwork, L1.5), located in different climatic and geographical zones. These locations were divided into 4 conditional groups: 1 — continental stations of mid-latitudes; 2 — tropical and subtropical stations located in coastal areas; 3 — stations located in desert areas; 4 — high-latitude stations. The correlation parameters of ground-based and satellite data were calculated depending on the cloudiness parameters (Cloud Fraction Day Mean variable) determined from MODIS measurements. A comparison of synchronous MODIS and AERONET datasets revealed a dependence of the correlation between orbital data and ground-based measurements on cloud cover parameters. Decreased cloud cover at the time of measurement leads to improved correlation parameters. The degree of this effect varies at different stations. It is most pronounced for stations located in continental temperate regions. It is the weakest in the desert regions.
Keywords: aerosol, atmospheric remote sensing, validation, aerosol optical depth, MODIS, AERONET
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