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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, 2025, Vol. 22, No. 1, pp. 212-220

Temporal features of submesoscale eddy manifestations in the coastal zone of Kaliningrad Region, according to the results of satellite monitoring in 2014–2024

E.V. Krayushkin 1 
1 Space Research Institute RAS, Moscow, Russia
Accepted: 28.11.2024
DOI: 10.21046/2070-7401-2025-22-1-212-220
The article presents the results of long-term satellite monitoring of the coastal zone of the southeastern Baltic Sea in summer months for the period 2014–2024. The main objective of this study was to determine the long-term features of manifestations of submesoscale eddy processes on the sea surface, as well as to assess the applicability of satellite data in the optical and radar parts of the electromagnetic spectrum. During the study, a total of 1413 high-resolution satellite images were analyzed (713 images in the visible range and 700 images in the radio range). Based on the results, an array of images with all manifestations of eddy processes in the region was compiled, and it was shown that manifestations of eddy dynamics processes were displayed on every second cloudless optical image. At the same time, of the entire number of analyzed satellite images, only half were available for identification of eddy processes, while the other half were unsuitable due to the presence of abundant cloudiness. The results of monitoring the study region using radar images showed that eddy processes at the sea surface were identified only in 16 % of the images. At the same time, all radar images were available for identifying eddy processes. It was also shown that the first four warm months (May, June, July and August) had on average the same number of eddy manifestations (60, 75, 58, 53, respectively), and in September, eddy activity dropped significantly (only 28 manifestations over 10 years of monitoring). As a rule, optical satellite images remain a more informative source for monitoring eddy activity at the sea surface.
Keywords: Baltic Sea, submesoscale eddies, remote sensing
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