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Proceedings of SPIE - The International Society for Optical Engineering

ISSN:0277786X

2020

10.1117/12.2575540

The spatiotemporal variability of chlorophyll concentrations on the North-Western Shelf (NWS) of the Black Sea was studied. The monthly average chlorophyll data of the CMEMS for 2007-2017 are analyzed with a spatial resolution of 1 km. As a result, a breakdown scheme for 4 regions is proposed and the cross-correlation coefficients of chlorophyll concentrations are estimated for each pair of neighboring regions by the moving correlation method. The wind field repeatability was analyzed using the six-hour ERA-Interim reanalysis surface wind data for the periods which were identified by the maximum values of the correlation coefficients. It is supposed that the duration and frequency of the plume or riverine waters transport events between defined regions has significant impact on the chlorophyll variability on the NWS shelf. It is proposed to classify the wind types related with maxima of cross-correlation coefficients between established four regions. The results are discussed and compared with recent achievements about the spatial variability and cross-frontal exchange of chlorophyll on the North-Western Shelf of the Black Sea.

Black Sea, Chlorophyll-a, ERA-Interim reanalysis, MODIS, Plume

2020-12-30 14:13:16