Hydrological Response to Meteorological Droughts in the Guadalquivir River Basin, Southern Iberian Peninsula
Metadatos
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Romero-Jiménez, Emilio; García-Valdecasas Ojeda, Matilde; Rosa-Cánovas, Juan José; Yeste, Patricio; Castro-Díez, Yolanda; Esteban Parra, María Jesús; Gámiz-Fortis, Sonia R.Editorial
MDPI
Materia
meteorological drought hydrological drought drought propagation
Fecha
2022-09-13Referencia bibliográfica
Romero Jiménez, E. et. al. Water 2022, 14, 2849. [https://doi.org/10.3390/w14182849]
Patrocinador
project CGL2017-89836-R, funded by the Spanish Ministry of Economy and Competitiveness with additional FEDER funds; project P20_00035 funded by FEDER/Junta de Andalucía-Consejería de Transformación Económica, Industria, Conocimiento y Universidades; FEDER/Junta de Andalucía-Consejería de Economía y Conocimiento (project B-RNM-336-UGR18)Resumen
Drought is an extreme phenomenon that will likely increase in frequency and severity in the
current context of climate change. As such, it must be studied to improve the decision-making process
in affected areas. As a semi-arid zone, the Guadalquivir River basin, located in the southern Iberian
Peninsula, is an interesting area to perform this study. The relationship between meteorological
and hydrological droughts is studied using drought indices with data from 1980 to 2012. The
chosen indices are the Standardized Streamflow Index (SSI) and the Standardized Precipitation
Evapotranspiration Index (SPEI). Their correlations are calculated, based on SPEI accumulation
periods, and these values are analyzed with a principal component analysis to find spatial patterns
in drought behavior inside the basin. This analysis was performed for the continuous series and
also for monthly series, to account for seasonal changes. It has been found that the relationship of
drought types occurs at different time scales depending mainly on orography and catchment area.
Two main patterns were found. Generally, for low altitudes and small catchment areas, accumulation
periods are shorter indicating that hydrological system in this area respond rapidly to meteorological
conditions. In mountainous parts of the basin, longer accumulation periods have a stronger influence
due to effects such as snowmelt.