Abstract
Age of ice in the Okhotsk Sea in 2001–2019 is determined by analysis of satellite data from passive and active microwave spectroradiometers. The areas with certain age composition are contoured with monthly discreteness. Mean thickness of ice in these areas is calculated by weighted averaging of thickness for three main forms, neglecting the ice deformation. The ice volume is calculated by these areas, taking into account the ice concentration. The total mean winter ice volume in the Okhotsk Sea decreased in two decades with the rate of 32.2 km3/decade, on average, while the ice cover decreased by 3.2 %/decade and the average ice thickness decreased by 3.4 cm/decade. Total loss of the ice volume in the Okhotsk Sea in 2001–2019 is estimated as 34.5 %. The ice volume decreasing was caused by both ice thickness lowering (60 %) and ice cover reduction (40 %).
Highlights
На основе анализа данных, полученных с помощью пассивных и активных микроволновых спектрорадиометров c искусственных спутников Земли, с месячной дискретностью определены границы зон льда различного возраста в Охотском море за период с 2001 по 2019 г
The ice volume is calculated by these areas, taking into account the ice concentration
The total mean winter ice volume in the Okhotsk Sea decreased in two decades with the rate of 32.2 km3/decade, on average, while the ice cover decreased by 3.2 %/decade and the average ice thickness decreased by 3.4 cm/decade
Summary
Трусков3* 1 Сахалинский государственный университет, 693008, г. 290; 2 СКБ САМИ ДВО РАН, 693023, г. Максима Горького, 25; 3 Сахалин Энерджи Инвестмент Компани, Лтд., 123242, г.
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