000136103 001__ 136103
000136103 005__ 20240711103552.0
000136103 0247_ $$2doi$$a10.3389/feart.2024.1355443
000136103 0248_ $$2sideral$$a139063
000136103 037__ $$aART-2024-139063
000136103 041__ $$aeng
000136103 100__ $$aMeseguer-Ruiz, Oliver
000136103 245__ $$aGeneral dry trends according to the standardized precipitation evapotranspiration index in mainland Chile
000136103 260__ $$c2024
000136103 5060_ $$aAccess copy available to the general public$$fUnrestricted
000136103 5203_ $$aDroughts are one of the main challenges affecting humanity in a global change context. Due to its spatial configuration, Chile experiences droughts of different severities, from arid to humid climates, ranging from sea level to elevations above 6,000 m above sea level (a.s.l.), but it is still unknown how this phenomenon behaves in distribution, duration and intensity. The goal of this study is to identify how droughts have affected the different climate regions of the country between 1979 and 2019. The Standardized Precipitation Evapotranspiration Index (SPEI), calculated for March and September, at the end of the humid season in the north and center-south of the country, respectively, and calculated at 3-, 6-, 9-, 12- and 24-month, allowed to determine the trends of the drought severity in a 5 × 5 km grid between 1979 and 2019. We found that negative and significant trends, indicating dry conditions, appear mainly in the Andes above 2,000 m a.s.l., where the main water reservoirs are located, affecting all climate types, except Mediterranean ones between 33°S and 38°S. The SPEI indicates general trends towards drier conditions across various elevations and climate types, with more pronounced negative trends in the north and central regions and some positive trends in the south. These trends suggest a significant impact on water availability, and highlight the need for focused policy initiatives to combat drought effects and manage water resources effectively. These findings are of main interest to Chile, one of the world’s leading producers of lithium and copper, with both industries requiring substantial amounts of water for extraction and processing, demanding high water availability in a drier territory.
000136103 536__ $$9info:eu-repo/grantAgreement/ES/MICINN/RYC2021-034330-I
000136103 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000136103 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000136103 700__ $$0(orcid)0000-0001-7663-1202$$aSerrano-Notivoli, Roberto$$uUniversidad de Zaragoza
000136103 700__ $$aNúñez-Hidalgo, Ignacio
000136103 700__ $$aSarricolea, Pablo
000136103 7102_ $$13006$$2430$$aUniversidad de Zaragoza$$bDpto. Geograf. Ordenac.Territ.$$cÁrea Geografía Física
000136103 773__ $$g12 (2024), 1355443 [10 pp.]$$pFront. earth sci. (Lausanne)$$tFrontiers in Earth Science$$x2296-6463
000136103 8564_ $$s6707259$$uhttps://zaguan.unizar.es/record/136103/files/texto_completo.pdf$$yVersión publicada
000136103 8564_ $$s2239515$$uhttps://zaguan.unizar.es/record/136103/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000136103 909CO $$ooai:zaguan.unizar.es:136103$$particulos$$pdriver
000136103 951__ $$a2024-07-11-08:38:23
000136103 980__ $$aARTICLE