ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa


Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2022, Vol. 19, No. 6, pp. 9-17

Differences in the Ocean Color atmospheric correction algorithms for remote sensing reflectance retrievals for different atmospheric conditions

E.B. Shybanov 1 , A.S. Papkova 1 
1 Marine Hydrophysical Institute RAS, Sevastopol, Russia
Accepted: 03.11.2022
DOI: 10.21046/2070-7401-2022-19-6-9-17
The work is devoted to estimating the spectral course of validation error of satellite and in situ measurements of remote sensing reflectance for various atmospheric conditions. During data validation, a number of systematic errors of standard algorithms were noted, for example, negative values of remote sensing reflectance in the short-wavelength region at 412 and 443 nm in the presence of dust in the atmosphere. It is shown that the modern approach to determining aerosol light scattering in the short-wavelength part of the visible range by extrapolating the signal from the near-IR region is not sufficiently correct from a physical point of view, and similar solutions by the interpolation method have more accurate estimates. The obtained results show that in the presence of an absorbing aerosol, the spectral law of atmospheric correction errors is close to the function λ–4. This effect is explained by the fact that dust aerosol is determined by remote sensing methods using the Gordon and Wang algorithms using the infrared channel, but arid aerosol has the main effect on the ratio of the aerosol and molecular components (shortwave range). This paper presents trends for further interpolation of satellite data not only under the condition of a clean atmosphere, but also in the presence of an absorbing aerosol. Experimental patterns of validation error for MODIS Aqua have been obtained.
Keywords: atmospheric correction, remote sensing reflectance, dust aerosol, normalized water-leaving radiance, aerosol optical depth, MODIS Aqua, AERONET
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