New insights into trends of rainfall extremes in the Amazon basin through trend‐empirical orthogonal function (1981–2021)

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cg.authorship.typesCGIAR and advanced research instituteen
cg.contributor.affiliationInternational Center for Tropical Agricultureen
cg.contributor.affiliationUniversidad del Rosarioen
cg.contributor.affiliationUniversidad Marianaen
cg.contributor.affiliationInstituto Nacional de Pesquisa da Amazôniaen
cg.creator.identifierWILMAR LOAIZA CERON: 0000-0003-1901-9572
cg.creator.identifierMary Kayano: 0000-0002-2516-295X
cg.creator.identifierRita Valéria Andreoli: 0000-0001-5531-0733
cg.creator.identifierTeresita del Rocio Canchala Nastar: 0000-0002-5208-5515
cg.creator.identifierAlvaro Javier Avila Diaz: 0000-0002-0404-4559
cg.creator.identifierIGOR RIBEIRO: 0000-0002-3529-0525
cg.creator.identifierJuan Rojas: 0000-0001-9465-2939
cg.creator.identifierDaniel Escobar Carbonari: 0000-0002-7467-1101
cg.creator.identifierJeimar Tapasco: 0000-0003-0027-8224
cg.identifier.doihttps://doi.org/10.1002/joc.8561en
cg.isijournalISI Journalen
cg.issn0899-8418en
cg.issue11en
cg.journalInternational Journal of Climatologyen
cg.reviewStatusPeer Reviewen
cg.subject.actionAreaSystems Transformation
cg.subject.alliancebiovciatCLIMATE CHANGEen
cg.subject.alliancebiovciatMONITORING AND REPORTINGen
cg.subject.impactAreaClimate adaptation and mitigation
cg.subject.sdgSDG 13 - Climate actionen
cg.volume44en
dc.contributor.authorCerón, Wilmar L.en
dc.contributor.authorKayano, Mary T.en
dc.contributor.authorAndreoli, Rita V.en
dc.contributor.authorCanchala, Teresitaen
dc.contributor.authorAvila-Diaz, Alvaroen
dc.contributor.authorRibeiro, Igor Oen
dc.contributor.authorRojas, Juan Den
dc.contributor.authorEscobar Carbonari, Danielen
dc.contributor.authorTapasco, Jeimaren
dc.date.accessioned2025-03-21T06:19:55Zen
dc.date.available2025-03-21T06:19:55Zen
dc.identifier.urihttps://hdl.handle.net/10568/173769
dc.titleNew insights into trends of rainfall extremes in the Amazon basin through trend‐empirical orthogonal function (1981–2021)en
dcterms.abstractAbstract Studies related to monitoring changes in frequency, intensity and duration of precipitation extremes are key to creating efficient climate change measures and forest conservation policies. This study describes new insights into rainfall precipitation extremes over the Amazon basin (AB) during the last four decades (1981–2021) from the Climate Hazards Group InfraRed Precipitation with Station data (CHIRPSv2). Here we analysed the trends of daily extreme precipitation indices proposed by the Expert Team on Climate Change Detection and Indices (ETCCDI) at the seasonal scale, using the trend‐empirical orthogonal function (TEOF). Our results indicate that the frequency of precipitation extremes increased over Peruvian Amazonia and northeastern Brazilian Amazonia, and reduced in the centre of AB, mainly during the first seasons of the year: December–January–February (DJF) and March–April–May (MAM). The cooling trend over the eastern and central tropical Pacific and the warming trend over the tropical and western subtropical Pacific could associate with the increase in frequency of precipitation extremes in DJF. Furthermore, during June–July–August (JJA) and September–October–November (SON), rainfall intensity indices showed a decrease in Colombia and the Bolivian Amazon; in contrast, northern and southern Peru delivered an increased pattern. The trend pattern in the JJA and SON seasons could be associated with a warming trend over most of the North Atlantic and a cooling in the 40°–60° S band. Our results demonstrate that the precipitation extremes over the AB have spatially varying trends. These heterogeneous trends over the space might be take into account for robust adaptation policies over the countries that are parts of the AB, such as Bolivia, Brazil, Colombia, Ecuador, Guyana, Perú, Surinam and Venezuela.en
dcterms.accessRightsLimited Access
dcterms.available2024-07-26
dcterms.bibliographicCitationCerón, W.L.; Kayano, M.T.; Andreoli, R.V.; Canchala, T.; Avila-Diaz, A.; Ribeiro, I.; Rojas, J.D..; Escobar Carbonari, D.; Tapasco, J. (2024) New insights into trends of rainfall extremes in the Amazon basin through trend‐empirical orthogonal function (1981–2021). International Journal of Climatology 44(11): p. 3955 - 3975. ISSN: 0899-8418en
dcterms.extent3955 - 3975en
dcterms.issued2024-07-26
dcterms.languageen
dcterms.licenseCopyrighted; all rights reserved
dcterms.publisherWileyen
dcterms.subjectcambio climáticoen
dcterms.subjectprecipitationen
dcterms.subjectsubtropical zonesen
dcterms.typeJournal Article

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