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Global Assessment o...
Global Assessment of the Standardized Evapotranspiration Deficit Index (SEDI) for Drought Analysis and Monitoring
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Vicente-Serrano, S. M. (författare)
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Miralles, D. G. (författare)
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Dominguez-Castro, F. (författare)
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- Azorin-Molina, Cesar (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences
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El Kenawy, A. (författare)
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McVicar, T. R. (författare)
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Tomas-Burguera, M. (författare)
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Begueria, S. (författare)
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Maneta, M. (författare)
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Pena-Gallardo, M. (författare)
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(creator_code:org_t)
- American Meteorological Society, 2018
- 2018
- Engelska.
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Ingår i: Journal of Climate. - : American Meteorological Society. - 0894-8755 .- 1520-0442. ; 31:14, s. 5371-5393
- Relaterad länk:
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https://journals.ame...
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https://gup.ub.gu.se...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- This article developed and implemented a new methodology for calculating the standardized evapotranspiration deficit index (SEDI) globally based on the log-logistic distribution to fit the evaporation deficit (ED), the difference between actual evapotranspiration (ETa) and atmospheric evaporative demand (AED). Our findings demonstrate that, regardless of the AED dataset used, a log-logistic distribution most optimally fitted the ED time series. As such, in many regions across the terrestrial globe, the SEDI is insensitive to the AED method used for calculation, with the exception of winter months and boreal regions. The SEDI showed significant correlations (p < 0.05) with the standardized precipitation evapotranspiration index (SPEI) across a wide range of regions, particularly for short (<3 month) SPEI time scales. This work provides a robust approach for calculating spatially and temporally comparable SEDI estimates, regardless of the climate region and land surface conditions, and it assesses the performance and the applicability of the SEDI to quantify drought severity across varying crop and natural vegetation areas.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Meteorologi och atmosfärforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Meteorology and Atmospheric Sciences (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Klimatforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Climate Research (hsv//eng)
Nyckelord
- Drought
- Evapotranspiration
- Hydrometeorology
- Indices
- Climate variability
- different time scales
- surface wind speeds
- wacmos-et project
- iberian
- peninsula
- soil-moisture
- united-states
- terrestrial evapotranspiration
- vegetation distribution
- evaporative demand
- analytical-model
- Meteorology & Atmospheric Sciences
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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