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Long-term precipitation in Southwestern Europe reveals no clear trend attributable to anthropogenic forcing



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García Herrera, Ricardo (2020) Long-term precipitation in Southwestern Europe reveals no clear trend attributable to anthropogenic forcing. Environmental research letters, 15 (9). ISSN 1748-9326

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Official URL: http://dx.doi.org/10.1088/1748-9326/ab9c4f


We present a long-term assessment of precipitation trends in Southwestern Europe (1850–2018) using data from multiple sources, including observations, gridded datasets and global climate model experiments. Contrary to previous investigations based on shorter records, we demonstrate, using new long-term, quality controlled precipitation series, the lack of statistically significant long-term decreasing trends in precipitation for the region. Rather, significant trends were mostly found for shorter periods, highlighting the prevalence of interdecadal and interannual variability at these time-scales. Global climate model outputs from three CMIP experiments are evaluated for periods concurrent with observations. Both the CMIP3 and CMIP5 ensembles show precipitation decline, with only CMIP6 showing agreement with long term trends in observations. However, for both CMIP3 and CMIP5 large interannual and internal variability among ensemble members makes it difficult to identify a trend that is statistically different from observations. Across both observations and models, our results make it difficult to associate any declining trends in precipitation in Southwestern Europe to anthropogenic forcing at this stage.

Item Type:Article
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© 2020 The Author(s). Artículo firmado por 14 autores. This work was supported by the research projects CGL2017-82216-R, CGL2017-83866-C3-3-R and PCI2019-103631, financed by the Spanish Commission of Science and Technology and FEDER; CROSSDRO project financed by the AXIS (Assessment of Cross(X)—sectoral climate Impacts and pathways for Sustainable transformation), JPI-Climate cofunded call of the European Commission and INDECIS which is part of ERA4CS, an ERA-NET initiated by JPI Climate, and funded by FORMAS (SE), DLR (DE), BMWFW (AT), IFD (DK), MINECO (ES), ANR (FR) with co-funding by the European Union (Grant 690462). Dhais Peña-Angulo received a ‘Juan de la Cierva’ postdoctoral contract (FJCI2017-33652 Spanish Ministry of Economy and Competitiveness, MEC). Conor Murphy was supported by the Irish Environmental Protection Agency (Grant Nos. 2019-CCRP-MS.60). Marco Turco has received funding from the Spanish Ministry of Science, Innovation and Universities through the project PREDFIRE (RTI2018-099711-J-I00), which is cofinanced with the European Regional Development Fund (ERDF/FEDER).

Uncontrolled Keywords:North-Atlantic oscillation; Climate-change; Mediterranean region; Iberian peninsula; Rainfall trends; River-basin; Time-series; Temperature; Variability; Extremes
Subjects:Sciences > Physics > Atmospheric physics
ID Code:62561
Deposited On:20 Oct 2020 09:33
Last Modified:14 Jan 2022 12:25

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