The key role of dry days in changing regional climate and precipitation regimes

TitleThe key role of dry days in changing regional climate and precipitation regimes
Publication TypeJournal Article
Year of Publication2014
AuthorsPolade S.D, Pierce DW, Cayan DR, Gershunov A, Dettinger MD
JournalScientific Reports
Volume4
Date Published2014/03
Type of ArticleArticle
ISBN Number2045-2322
Accession NumberWOS:000332716400002
Keywordscalifornia; drought; events; frequency; hydrological cycle; model; tropical precipitation
Abstract

Future changes in the number of dry days per year can either reinforce or counteract projected increases in daily precipitation intensity as the climate warms. We analyze climate model projected changes in the number of dry days using 28 coupled global climate models from the Coupled Model Intercomparison Project, version 5 (CMIP5). We find that the Mediterranean Sea region, parts of Central and South America, and western Indonesia could experience up to 30 more dry days per year by the end of this century. We illustrate how changes in the number of dry days and the precipitation intensity on precipitating days combine to produce changes in annual precipitation, and show that over much of the subtropics the change in number of dry days dominates the annual changes in precipitation and accounts for a large part of the change in interannual precipitation variability.

DOI10.1038/srep04364
Short TitleSci Rep
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