The robust dynamical contribution to precipitation extremes in idealized warming simulations across model resolutions

Lu, Jian, Ruby Leung, L., Yang, Qing, Chen, Gang, Collins, William D. ORCID: https://orcid.org/0000-0002-4463-9848, Li, Fuyu, Jason Hou, Z. and Feng, Xuelei (2014) The robust dynamical contribution to precipitation extremes in idealized warming simulations across model resolutions. Geophysical Research Letters, 41 (8). pp. 2971-2978. ISSN 0094-8276

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Abstract

The impact of the circulation shift under climate warming on the distribution of precipitation extremes and the associated sensitivity to model resolution are investigated using Community Atmosphere Model Version 3.0 in an aquaplanet configuration. The response of the probability density function of the precipitation to a uniform sea surface temperature warming can be interpreted as superimposition of a dynamically induced poleward shift and a thermodynamically induced upward shift toward higher intensities, which give rise to manyfold increase in the frequency of the most extreme categories of the precipitation events at the poleward side of the midlatitude storm track. Coarser resolutions underestimate not only the intensity of the precipitation extremes but also the dynamical contribution to the increase of precipitation extremes. Meanwhile, the thermodynamic contribution to the intensification of the precipitation extremes is substantially less than expected from the Clausius-Clapeyron relation, implicative of significant change in the vertical structure of the precipitation processes. Key Points Provide confidence and rationale in the robust changes of precip extremes Show sign of convergence for certain categories of precipitation extremes

Item Type:	Article
Uncontrolled Keywords:	circulation shift,global warming,precipitation extreme,geophysics,general earth and planetary sciences,sdg 13 - climate action ,/dk/atira/pure/subjectarea/asjc/1900/1908
Faculty \ School:	Faculty of Science > School of Environmental Sciences
Related URLs:	https://www.scopus.com/pages/publication...
Depositing User:	LivePure Connector
Date Deposited:	06 Jul 2026 14:35
Last Modified:	12 Jul 2026 23:03
URI:	https://ueaeprints.uea.ac.uk/id/eprint/103660
DOI:	10.1002/2014GL059532

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