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Heterogeneous response of global precipitation concentration to global warming
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2020
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Source: International Journal of Climatology, 41(S1)
[PDF-4.13 MB]
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Journal Title:International Journal of Climatology
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Description:This study investigated the change in precipitation concentration due to global warming based on the output of one experiment (a scenario of 1% CO2 increase per year) from 12 general circulation models provided by the Coupled Model Intercomparison Project Phase 5 (CMIP5). Two different indices were used to describe precipitation concentration: (a) concentration index (CI), which measures the evenness of total precipitation on wet days, and (b) precipitation concentration degree (PCD), which measures the evenness of the annual precipitation distributions over time. We found that widespread increases in CI were distributed over all land areas except for some arid areas, indicating a less uniform distribution of precipitation on wet days in a warming climate caused by CO2 increasing. We also found that the spatial patterns of changes in PCD are complex, with large regional differences. All of the results suggest a global‐scale readjustment of precipitation distribution in magnitude and timing. This kind of readjustment may have significant impacts on climatic and hydrological events and thus cause severe ecological and environmental damage.
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Source:International Journal of Climatology, 41(S1)
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ISSN:0899-8418;1097-0088;
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Rights Information:Accepted Manuscript
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Compliance:Library
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