Polar Low genesis over the North Pacific under different global warming 
scenarios

Chen, Fei; von Storch, Hans; Zeng, Lili; Du, Yan

doi:10.1007/s00382-014-2117-5

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Polar Low genesis over the North Pacific under different global warming scenarios

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Citation

Chen, F., von Storch, H., Zeng, L., & Du, Y. (2014). Polar Low genesis over the North Pacific under different global warming scenarios. Climate Dynamics, 43(12), 3449-3456. doi:10.1007/s00382-014-2117-5.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0026-AD47-4

Abstract

Following an earlier climatological study of North Pacific Polar Lows by employing dynamical downscaling of NCEP1 reanalysis in the regional climate model COSMO-CLM, the characteristics of Polar Low genesis over the North Pacific under different global warming scenarios are investigated. Simulations based on three scenarios from the Special Report on Emissions Scenarios were conducted using a global climate model (ECHAM5) and used to examine systematic changes in the occurrence of Polar Lows over the twenty first century. The results show that with more greenhouse gas emissions, global air temperature would rise, and the frequency of Polar Lows would decrease. With sea ice melting, the distribution of Polar Low genesis shows a northward shift. In the scenarios with stronger warming there is a larger reduction in the number of Polar Lows.