000106723 001__ 106723
000106723 005__ 20220503125127.0
000106723 0247_ $$2doi$$a10.1029/2020JD033017
000106723 0248_ $$2sideral$$a120304
000106723 037__ $$aART-2020-120304
000106723 041__ $$aeng
000106723 100__ $$aTomas-Burguera, M.
000106723 245__ $$aGlobal Characterization of the Varying Responses of the Standardized Precipitation Evapotranspiration Index to Atmospheric Evaporative Demand
000106723 260__ $$c2020
000106723 5060_ $$aAccess copy available to the general public$$fUnrestricted
000106723 5203_ $$aThe standardized precipitation evapotranspiration index (SPEI) is one of the well-established drought metrics worldwide. It is simply computed using precipitation and atmospheric evaporative demand (AED) data. Although AED is considered a key driver of drought variability worldwide, it could have less impact on drought in specific regions and for particular times as a function of the magnitude of precipitation. Specifically, the influence of the AED might overestimate drought severity during both normal and humid periods, resulting in “false alarms” about drought impacts on physical and human environments. Here, we provided a global characterization of the sensitivity of the SPEI to changes of the AED. Results demonstrate that the contribution of AED to drought severity is largely impacted by the spatial and temporal variability of precipitation. Specifically, the impact of AED on drought severity was more pronounced during periods of low precipitation, compared to wet periods. Interestingly, drought severity in humid regions (as revealed by SPEI) also showed low sensitivity to AED under drier conditions. These results highlight the skill of SPEI in identifying the role of AED in drought evolution, especially in arid and semiarid regions whose climate is characterized typically by low precipitation. This advantage was also evident for humid environments, where SPEI did not overestimate drought severity due to the increased AED. These findings highlight the broader applicability of SPEI to accurately characterize drought severity worldwide.
000106723 536__ $$9info:eu-repo/grantAgreement/ES/MINECO-FEDER/PCI2019-103631
000106723 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000106723 590__ $$a4.261$$b2020
000106723 591__ $$aMETEOROLOGY & ATMOSPHERIC SCIENCES$$b27 / 94 = 0.287$$c2020$$dQ2$$eT1
000106723 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000106723 700__ $$aVicente-Serrano, S.M.
000106723 700__ $$aPeña-Angulo, D.
000106723 700__ $$0(orcid)0000-0003-3085-7040$$aDomínguez-Castro, F.
000106723 700__ $$aNoguera, I.
000106723 700__ $$aEl Kenawy, A.
000106723 773__ $$g125, 17 (2020), e2020JD033017 [14 pp]$$pJ. geophys. res., Atmos.$$tJOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES$$x2169-897X
000106723 8564_ $$s1223246$$uhttps://zaguan.unizar.es/record/106723/files/texto_completo.pdf$$yPostprint
000106723 8564_ $$s1808292$$uhttps://zaguan.unizar.es/record/106723/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000106723 909CO $$ooai:zaguan.unizar.es:106723$$particulos$$pdriver
000106723 951__ $$a2022-05-03-12:45:04
000106723 980__ $$aARTICLE