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. 5, pp. 76-85

Technology to create cloud-free composites from Sentinel-2 satellite data

A.V. Kashnitskii 1 , M.A. Burtsev 1 , A.A. Proshin 1 
1 Space Research Institute RAS, Moscow, Russia
Accepted: 31.10.2022
DOI: 10.21046/2070-7401-2022-19-5-76-85
The paper describes the technology for obtaining cloudless composite images based on Sentinel-2 satellite data, as well as the set of composite images of the territory of Russia obtained with this technology for different periods. The technology is based on masking of clouds and their shadows using a modified scene classification Sen2Cor algorithm derived product. Resulting pixel values of the composite image are obtained by calculating the median of all net measurements for the period, and the number of scenes involved in the calculation is selected depending on the specific situation. As a result, a set of monthly (from March to November) and seasonal (spring, summer, autumn, growing season, snow period) cloudless composite images in six spectral bands was created using the described technology from Sentinel-2 series satellites data for the territory of Russia for 2019–2022. The use of the created composite images showed their advantage in solving a number of problems compared to using individual scenes. A set of composite images for the territory of Russia for different periods has been published on the resources of the IKI-Monitoring Center for Collective Use and is now available to the wide research community as an aid in solving scientific problems.
Keywords: Sentinel-2, composite images, cloud detection, cloudless monthly data, winter composite, remote sensing
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