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.

这项研究报告了在夏季和秋季，卡拉海表面淡化层（SDL）的传播动态。我们分析了2013-2018年收集的船上测量数据以及与船上数据相关的MODIS海洋颜色数据。我们根据卫星数据制定了一个相对严格的标准来确定SDL边界。为此，我们分析了越过表面淡化层边界时获得的舰船流通量测量系统数据。此外，我们使用了区域算法来处理卫星数据，并估计卡拉海的有色溶解有机物吸收系数。结果表明，风势对SDL边界转换的季节间和年际变化具有重大影响。给出了2013-2018年间不同时间的表面淡化层边界的位置。获得的结果对于计算热量平衡和分析卡拉海的生物生产力具有重要意义。