Earth Sciences

Enhanced Arctic moisture transport toward Siberia in autumn revealed by tagged moisture transport model experiment

T. Sato, T. Nakamura, et al.

Discover how rapid Arctic warming has reshaped atmospheric moisture transport to Siberia, leading to intensified snowstorms during key accumulation seasons. This research, conducted by Tomonori Sato, Tetsu Nakamura, Yoshihiro Iijima, and Tetsuya Hiyama, emphasizes the critical impact of Arctic Ocean evaporation on regional precipitation patterns.

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Abstract

Rapid Arctic warming has altered the regional hydrological cycle through sea ice reduction. This study shows a significant increase in atmospheric moisture transport to Siberia from Arctic Ocean evaporation during autumn/early winter (1981–2019), coinciding with substantial sea ice retreat. Enhanced Arctic moisture is observed in western Siberia in September and eastern Siberia in October–December, linked to cyclonic activity. The findings highlight the importance of monitoring equatorward moisture transport during snow accumulation seasons, as increased Arctic Ocean evaporation could intensify local snowstorms.

Publisher

npj Climate and Atmospheric Science

Published On

Nov 24, 2022

Authors

Tomonori Sato, Tetsu Nakamura, Yoshihiro Iijima, Tetsuya Hiyama

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