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Stronger influences of increased CO2 on subdaily precipitation extremes than at the daily scale

Author(s): Zhang, Wei; Villarini, Gabriele; Scoccimarro, Enrico; Vecchi, Gabriel A

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Abstract: Based on idealized experiments (preindustrial control experiment (PI) and 1% yr−1 increase (1%CO2) in atmospheric CO2) from 10 general circulation models produced under the Coupled Model Intercomparison Project Phase 5 and using the fraction of attributable risk, we examine the CO2 effects on extreme precipitation at the subdaily and daily scales. We find that the increased CO2 concentration substantially increases the odds of the occurrence of subdaily precipitation extremes compared to the daily scale in most areas of the world, with the exception of some regions in the subtropics, likely in relation to the subsidence of the Hadley Cell. These results point to the large role that atmospheric CO2 plays in extreme precipitation under an idealized framework.
Publication Date: 19-Jul-2017
Citation: Zhang, Wei, Gabriele Villarini, Enrico Scoccimarro, and Gabriel A. Vecchi. "Stronger influences of increased CO2 on subdaily precipitation extremes than at the daily scale." Geophysical Research Letters 44, no. 14 (2017): 7464-7471. doi:10.1002/2017GL074024.
DOI: doi:10.1002/2017GL074024
ISSN: 0094-8276
EISSN: 1944-8007
Pages: 7464 - 7471
Type of Material: Journal Article
Journal/Proceeding Title: Geophysical Research Letters
Version: Final published version. Article is made available in OAR by the publisher's permission or policy.

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