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Title: Climate Change Projections of Dry and Wet Events in Iberia Based on the WASP-Index
Authors: Andrade, Cristina
Contente, Joana
Santos, J. A.
Keywords: WASP-Index
climate change
Issue Date: 2021
Abstract: The Weighted Anomaly of Standardized Precipitation Index (WASP-Index) was computed over Iberia for three monthly timescales (3-month, 6-month and 12-month) in 1961–2020, based on an observational gridded precipitation dataset (E-OBS), and between 2021 and 2070, based on biascorrected precipitation generated by a six-member climate model ensemble from EURO-CORDEX, under two Representative Concentration Pathways (RCPs), RCP4.5 and RCP8.5. The area-mean values revealed an upward trend in the frequency of occurrence of intermediate-to-severe dry events over Iberia, which will be strengthened in the future, particularly for the 12-month WASP (12mWASP) intermediate dry events under RCP8.5. Besides, the number of 3-month WASP (3m-WASP) intermediate-to-severe wet events is projected to increase (mostly the severest events under RCP4.5) but no evidence was found for an increase in the number of more persistent 12m-WASP wet events under both RCPs. Despite important spatial heterogeneities, an increase/decrease of the intensity, duration and frequency of occurrence of the 12m-WASP intermediate-to-severe dry/wet events was found under both scenarios, mainly in the southernmost regions of Iberia (mainly Comunidad Valenciana,RegióndeMurcia,AndalucíainSpain,Alentejo,andAlgarveinPortugal),thusbecoming more exposed to prolonged and severe droughts in the future. This finding corroborates the results of previous studies
Peer Reviewed: yes
URI: 10.3390/cli9060094
ISSN: 2225-1154
Document Type: Article
Appears in Collections:DFIS - Artigo publicado em Revista Científica Indexada

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