A new perspective for future precipitation change from intense extratropical 
cyclones

Kodama, C.; Stevens, Bjorn; Mauritsen , Thorsten; Seiki, T.; Satoh, M.

doi:10.1029/2019GL084001

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A new perspective for future precipitation change from intense extratropical cyclones

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Stevens, Bjorn
Director’s Research Group AES, The Atmosphere in the Earth System, MPI for Meteorology, Max Planck Society;

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Citation

Kodama, C., Stevens, B., Mauritsen, T., Seiki, T., & Satoh, M. (2019). A new perspective for future precipitation change from intense extratropical cyclones. Geophysical Research Letters, 46, 12435-12444. doi:10.1029/2019GL084001.

Cite as: https://hdl.handle.net/21.11116/0000-0005-476C-3

Abstract

Extratropical cyclones, major contributors to precipitation in the midlatitudes, comprise mesoscale fronts and fine-scale convective storms. Intense oceanic cyclones pose natural hazards, making reliable projections of their changes with global warming of great interest. Here, we analyze the first ever global climate simulations to resolve such mesoscale dynamics of extratropical cyclones. The present-day structure, frequency, and precipitation of the oceanic extratropical cyclones compare well with reanalyses and new satellite datasets that resolve the multiscale cloud-precipitation system. Simulated precipitation from intense oceanic cyclones increases at a rate of 7%/K-1, following Clausius-Clapeyron, with warming. The same scaling is apparent also in the interhemispheric contrast, suggesting that the latter could serve as a predictor of the former. Projected changes in precipitation from intense oceanic cyclones with warming may thus be testable using a reliable global observation network of precipitation in the present day.