Abstract

Marine heat waves are extreme events that represent a significant excess of average climatic temperatures. In this study marine heat waves calculated both from observational data and from numerical modeling data in the Laptev Sea region are analyzed. The regional numerical model SibCIOM (Siberian Coupled Ice-Ocean Model) is used to study the variability of the hydrological characteristics of the Arctic Ocean and its shelf seas. Observational data shows an increase in the frequency and intensity of the marine heat waves in recent years in this region. On the basis of numerical experiments, the work demonstrates intense warming in the bottom layer, as a consequence of the increase in the sea surface temperature of the Laptev Sea in recent years. The paper analyzes the possible causes and consequences of an increase in the sea surface temperature of the Laptev Sea.

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