How does the SST variability over the western North AtlanticOcean control Arctic warming over the Barents？Kara Seas?
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- How does the SST variability over the western North AtlanticOcean control Arctic warming over the Barents？Kara Seas?
- Other Titles
- 북서대서양의 해수면 온도 변동이 바렌츠-카라 해역의 북극 온난화에 미치는 영향
- Ok Jung
- Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences
- Arctic warming; Stationary Wave Model; Western North Atlantic Ocean; transient eddy vorticity forcing
- Issue Date
- Ok Jung, et al. 2017. "How does the SST variability over the western North AtlanticOcean control Arctic warming over the Barents？Kara Seas?". ENVIRONMENTAL RESEARCH LETTERS, 12(3): 1-8.
- Arctic warming over the Barents？Kara Seas and its impacts on the mid-latitude circulations have been widely discussed. However, the specific mechanism that brings the warming still remains unclear. In this study, a possible cause of the regional Arctic warming over the Barents？Kara Seas during early winter (October？December) is suggested. We found that warmer sea surface temperature anomalies over the western North Atlantic Ocean (WNAO) modulate the transient eddies overlying the oceanic frontal region. The altered transient eddy vorticity flux acts as a source for the Rossby wave straddling the western North Atlantic and the Barents？Kara Seas (Scandinavian pattern), and induces a significant warm advection, increasing surface and lowerlevel temperature over the Eurasian sector of the Arctic Ocean. The importance of the sea surface temperature anomalies over the WNAO and subsequent transient eddy forcing over the WNAO was also supported by both specially designed simple model experiments and general circulation model experiments.
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