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Pablo Blanco-Gómez
Department of Civil Engineering, Universidad Católica San Antonio de Murcia, Campus de Los Jerónimos s/n, 30107 Murcia, Spain

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Journal article
Published: 20 August 2021 in Remote Sensing
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Hydrological modelling requires accurate climate data with high spatial-temporal resolution, which is often unavailable in certain parts of the world—such as Central America. Numerous studies have previously demonstrated that in hydrological modelling, global weather reanalysis data provides a viable alternative to observed data. However, calibrating and validating models requires the use of observed discharge data, which is also frequently unavailable. Recent, global-scale applications have been developed based on weather data from reanalysis; these applications allow streamflows with satisfactory resolution to be obtained. An example is the Global Flood Awareness System (GloFAS), which uses the fifth generation of reanalysis data produced by the European Centre for Medium-Range Weather Forecasts (ERA5) as input. It provides discharge data from 1979 to the present with a resolution of 0.1°. This study assesses the potential of GloFAS for calibrating hydrological models in ungauged basins. For this purpose, the quality of data from ERA5 and from the Climate Hazards Group InfraRed Precipitation and Temperature with Station as well as the Climate Forecast System Reanalysis (CFSR) was analysed. The focus was on flow simulation using the Soil and Water Assessment Tool (SWAT) model. The models were calibrated using GloFAS discharge data. Our results indicate that all the reanalysis datasets displayed an acceptable fit with the observed precipitation and temperature data. The correlation coefficient (CC) between the reanalysis data and the observed data indicates a strong relationship at the monthly level all of the analysed stations (CC > 0.80). The Kling–Gupta Efficiency (KGE) also showed the acceptable performance of the calibrated SWAT models (KGE > 0.74). We concluded that GloFAS data has substantial potential for calibrating hydrological models that estimate the monthly streamflow in ungauged watersheds. This approach can aid water resource management.

ACS Style

Javier Senent-Aparicio; Pablo Blanco-Gómez; Adrián López-Ballesteros; Patricia Jimeno-Sáez; Julio Pérez-Sánchez. Evaluating the Potential of GloFAS-ERA5 River Discharge Reanalysis Data for Calibrating the SWAT Model in the Grande San Miguel River Basin (El Salvador). Remote Sensing 2021, 13, 3299 .

AMA Style

Javier Senent-Aparicio, Pablo Blanco-Gómez, Adrián López-Ballesteros, Patricia Jimeno-Sáez, Julio Pérez-Sánchez. Evaluating the Potential of GloFAS-ERA5 River Discharge Reanalysis Data for Calibrating the SWAT Model in the Grande San Miguel River Basin (El Salvador). Remote Sensing. 2021; 13 (16):3299.

Chicago/Turabian Style

Javier Senent-Aparicio; Pablo Blanco-Gómez; Adrián López-Ballesteros; Patricia Jimeno-Sáez; Julio Pérez-Sánchez. 2021. "Evaluating the Potential of GloFAS-ERA5 River Discharge Reanalysis Data for Calibrating the SWAT Model in the Grande San Miguel River Basin (El Salvador)." Remote Sensing 13, no. 16: 3299.

Journal article
Published: 11 November 2019 in Water
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This study assessed how changes in terms of temperature and precipitation might translate into changes in water availability and droughts in an area in a developing country with environmental interest. The hydrological model Soil and Water Assessment Tool (SWAT) was applied to analyze the impacts of climate change on water resources of the Guajoyo River Basin in El Salvador. El Salvador is in one of the most vulnerable regions in Latin America to the effects of climate change. The predicted future climate change by two climate change scenarios (RCP 4.5 and RCP 8.5) and five general circulation models (GCMs) were considered. A statistical analysis was performed to identify which GCM was better in terms of goodness of fit to variation in means and standard deviations of the historical series. A significant decreasing trend in precipitation and a significant increase in annual average temperatures were projected by the middle and the end of the twenty–first century. The results indicated a decreasing trend of the amount of water available and more severe droughts for future climate scenarios with respect to the base period (1975–2004). These findings will provide local water management authorities useful information in the face of climate change to help decision making.

ACS Style

Pablo Blanco-Gómez; Patricia Jimeno-Sáez; Javier Senent-Aparicio; Julio Pérez-Sánchez. Impact of Climate Change on Water Balance Components and Droughts in the Guajoyo River Basin (El Salvador). Water 2019, 11, 2360 .

AMA Style

Pablo Blanco-Gómez, Patricia Jimeno-Sáez, Javier Senent-Aparicio, Julio Pérez-Sánchez. Impact of Climate Change on Water Balance Components and Droughts in the Guajoyo River Basin (El Salvador). Water. 2019; 11 (11):2360.

Chicago/Turabian Style

Pablo Blanco-Gómez; Patricia Jimeno-Sáez; Javier Senent-Aparicio; Julio Pérez-Sánchez. 2019. "Impact of Climate Change on Water Balance Components and Droughts in the Guajoyo River Basin (El Salvador)." Water 11, no. 11: 2360.