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Title

Evaluation of long-term changes in precipitation over Bolivia based on observations and Coupled Model Intercomparison Project models

AuthorsVicente Serrano, Sergio M. CSIC ORCID ; Maillard, Oswaldo; Peña-Angulo, Dhais CSIC ORCID; Domínguez-Castro, Fernando CSIC ORCID; Noguera, Iván CSIC ORCID; Lorenzo-Lacruz, Jorge CSIC ORCID; Azorín-Molina, César CSIC ORCID; Juez, Carmelo CSIC ORCID ; Guijarro, José A.; Halifa-Marín, A.; Kenawy, A. El
KeywordsBolivia
CMIP5
CMIP6
Precipitation
Trends
Issue Date15-Mar-2023
PublisherRoyal Meteorological Society (Great Britain)
John Wiley & Sons
CitationInternational Journal of Climatology 43(3): 1431-1447 (2023)
AbstractUsing observations and model simulations from the 5th and 6th phases of the Coupled Model Intercomparison Project (CMIP5 and CMIP6, respectively), this study evaluated changes in monthly, seasonal, and annual precipitation over Bolivia from 1950 to 2019. Results demonstrate that observed precipitation is characterized by strong interannual and decadal variability. However, long-term precipitation trends were not identified on the annual scale. Similarly, changes in seasonal precipitation were almost nonsignificant (p > .05) for the study period. Spatially, albeit with its complex orography, no substantial regional variations in observed precipitation trends can be identified across Bolivia. In contrast, long-term precipitation trends, based on CMIP5 and CMIP6 models, suggest a dominance of negative trends, mainly during austral winter (JJA) (−10%) and spring (SON) (−15%). These negative trends were more pronounced in the lowlands of Bolivia (−20%). Overall, these contradictory results highlight the need for validating precipitation trend outputs from model simulations, especially in areas of complex topography like Bolivia.
Publisher version (URL)http://dx.doi.org/10.1002/joc.7924
URIhttp://hdl.handle.net/10261/339651
DOI10.1002/joc.7924
ISSN0899-8418
E-ISSN1097-0088
Appears in Collections:(CIDE) Artículos
(IPE) Artículos




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