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, 2021, Vol. 18, No. 5, pp. 159-165

Features of circulation in the Gulf of Alaska from satellite altimetry data

A.A. Romanov 1 , A.A. Romanov 1 
1 AO Central Research Institute for Machine Building, Korolev, Moscow Region, Russia
Accepted: 12.07.2021
DOI: 10.21046/2070-7401-2021-18-5-159-165
The article continues the study of the circulation of the sea surface in the Gulf of Alaska using satellite altimetry data. The spatial distributions of sea surface height anomalies were analyzed with different time averaging. Stationary and quasi-stationary structures were revealed on the distributions averaged over the entire research period for various time samples: the monthly average and seasonal average distributions were considered. This study is aimed at verifying the previously stated assumptions about the circulation features in the Gulf of Alaska using the distributions of absolute dynamic topography from satellite altimetry data. Assumptions are made about the nature of the hydrological regime in the region, depending on the month or season of observation. The analysis and comparison of the research results showed that the nature of the revealed relative variations in the sea surface height is generally similar both when using surface anomalies and absolute dynamic topography. At the same time, there are some differences in the revealed structures on the surface, presumably characterizing the mesoscale spatial variability of the ocean surface. A continuous series of altimetry satellite observations from 1992 to 2020 was used to construct maps of the distributions of the topography of the ocean surface.
Keywords: satellite altimetry, ocean remote sensing, ocean surface dynamics, Gulf of Alaska, sea surface height anomalies, synoptic dynamic topography
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