Sea ice retreat and its impact on cyclone activity in the Nordic Seas: insights from coupled regional climate model simulations

Abstract The impact of sea ice concentration (SIC) changes in the Nordic Seas on the winter cyclone activity in the Nordic Seas is analyzed in 10-member ensemble simulations with the coupled Arctic atmosphere-ocean-sea ice model HIRHAM-NAOSIM for the 1979–2016 period. The analysis reveals that anoma...

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Bibliographic Details
Published in:IOP Conference Series: Earth and Environmental Science
Main Authors: Dembitskaya, M A, Akperov, M, Semenov, V A, Mokhov, I I, Bokuchava, D D, Dorn, W, Rinke, A
Format: Article in Journal/Newspaper
Language:unknown
Published: IOP Publishing 2020
Subjects:
Arctic
Nordic Seas
Sea ice
Online Access:http://dx.doi.org/10.1088/1755-1315/606/1/012009
https://iopscience.iop.org/article/10.1088/1755-1315/606/1/012009/pdf
https://iopscience.iop.org/article/10.1088/1755-1315/606/1/012009
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Summary:Abstract The impact of sea ice concentration (SIC) changes in the Nordic Seas on the winter cyclone activity in the Nordic Seas is analyzed in 10-member ensemble simulations with the coupled Arctic atmosphere-ocean-sea ice model HIRHAM-NAOSIM for the 1979–2016 period. The analysis reveals that anomalously low SIC in the Nordic Seas leads to decrease in vertical atmospheric static stability, and thus may result in favorable conditions for cyclogenesis in the Nordic Seas. Our analysis also shows a statistically significant increase of cyclone frequency over the Nordic Seas under conditions of the low SIC regime.

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