CALCULATION OF THE SEA LEVEL VARIATION USING SATELLITE IMAGERY SST
Author(s): Aleksanina M.G., Zagumёnnov A.A.
Rubric: Methodological research
Release: 2020-3 (32)
Keywords: satellite altimetry, sea levels, geostrophic currents, satellite image, sea marker, current velocities, synoptic eddy
Annotation: A novel approach for automatic calculation of sea level variation is proposed. It uses displacement velocities of sea markers obtained from infrared satellite imagery. Sea marker on satellite image is a brightness heterogeneity which remains during certain time interval. Sea markers displacement velocities are calculated on the base of modified function of similarity of two same fragments of satellite images for certain time interval. Considering sea markers displacement velocities as sea surface currents velocities and solving inverse problem it is possible to calculate sea level variations of synoptic eddies. The main advantage of the proposed approach is that calculation of sea level variation by displacement velocities of sea markers on satellite infrared imagery allows to precise data of satellite altimetry and to raise accuracy of calculated sea level.
Bibliography: Aleksanina M.G., Zagumёnnov A.A. CALCULATION OF THE SEA LEVEL VARIATION USING SATELLITE IMAGERY SST // Education Resources and Technologies. – 2020. – № 3 (32). – С. 98-104. doi: 10.21777/2500-2112-2020-3-98-104