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Surface desalinated layer distribution in the Kara Sea determined by shipboard and satellite data

Glukhovets Dmitry I., Goldin Yury A.

Oceanologia

2020

No. 62 (3)

364--373

This study reports the propagation dynamics of the Kara Sea surface desalinated layer (SDL) during the summer and autumn seasons. We analysed shipboard measurements data collected in 2013-2018 and MODIS ocean colour data that correlated with the shipboard ones. We formulated a comparatively strict criterion to determine the SDL border based on satellite data. For that, we analyzed the shipboard flow-through measuring system data obtained while crossing the surface desalinated layer border. Further, we used a regional algorithm to process the satellite data and estimate the coloured dissolved organic matter absorption coefficient for the Kara Sea. The results demonstrate a significant effect of the wind regime on the interseasonal and interannual variability of the transformation of the SDL boundaries. The positions of the surface desalinated layer boundaries at different times during 2013-2018 are given. The obtained results are important for calculating the heat balance and analyzing the Kara Sea bio-productivity.

Surface layer desalination of the bays on the east coast of Novaya Zemlya identified by shipboard and satellite data

Glukhovets Dmitry I., Goldin Yury A.

Oceanologia

2019

No. 61 (1)

68--77

This study examined the influences of continental and island river runoff as well as glacial meltwater runoff on the water surface layers of the Kara Sea in different bays on the eastern coast of Novaya Zemlya, an archipelago off the coast of Russia. High-resolution satellite and shipboard data obtained in 2015 were used to determine the sources of desalination (glacial meltwaters and river waters), which can be distinguished by the type of correlation (positive, negative, or none) seen between salinity and the coloured dissolved organic matter fluorescencje intensity. Examples of the various situations that can occur in the bays are provided and discussed.