Articles | Volume 10, issue 5
https://doi.org/10.5194/tc-10-2191-2016
https://doi.org/10.5194/tc-10-2191-2016
Research article
 | 
22 Sep 2016
Research article |  | 22 Sep 2016

Mechanism of seasonal Arctic sea ice evolution and Arctic amplification

Kwang-Yul Kim, Benjamin D. Hamlington, Hanna Na, and Jinju Kim

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Short summary
Analysis reveals that “Arctic amplification”, lower tropospheric winter temperature rise in the Arctic, is due to sea ice melting and the resulting increase in the amount of turbulent heat flux from the ocean. As a result of increased turbulent heat flux, lower atmosphere warms up, resulting in increased downward longwave radiation. A detailed physical mechanism is presented together with an explanation why this positive feedback process is currently possible in the Barents–Kara seas.