Impact on discharge modelling using different spatial and temporal resolution scenarios in South of Chile

Primer Autor
Fustos, Ivo
Co-autores
Abarca-del-Rio, R.
Artal, O.
Alvial, F.
Sepulveda, H. H.
Título
Impact on discharge modelling using different spatial and temporal resolution scenarios in South of Chile
Editorial
PERGAMON-ELSEVIER SCIENCE LTD
Revista
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
Lenguaje
en
Resumen
Despite ungauged basins exist across countries of a wide range of incomes, assessing water resource availability is an essential issue in low-income zones with less dense hydrologic measurement networks. In a megadrought context, hydrological resources availability is critical in the central south of Chile, leading to water scarcity problems for the population. We develop a one-way coupled discharge model using the Weather and Research Forecast (WRF) and Variable Infiltration Capacity (VIC)/routing model to estimate surface water availability along the basin and subbasins. We studied the Biobio basin in Chile (similar to 37 degrees S) because of its low spatial density discharge measurements as a case of study. We compare discharge variations simulated between two datasets and in-situ high temporal resolution measurements between the years 2005-2006. Our results show that discharge is unsuitable for a mid-scale basin using atmospheric products over 12 km of spatial resolution. However, our simulations showed high efficiency (Nash Sutcliffe over 0.75) and low RMSE values (less than 40 m3s-1 in most cases) in daily and trT hourly simulations at 4-km spatial resolution. The percentual root mean square error (pRMSE) improved from the worst scenario (110% in SC1) up to 37% in the best scenario (SC3), showing that the coupled approach is suitable for basins in the south of Chile. These results provide a temporal-spatial basis for improving water resources management in poorly gauged basins in the south of Chile, as is common in South America. Our analysis will contribute to a real-time flow modeling system development for the Biobio basin. Future developments will contribute to surface water availability in a water scarcity context.
Tipo de Recurso
artículo original
doi
10.1016/j.jsames.2022.103727
Formato Recurso
PDF
Palabras Claves
LAND-SURFACE MODEL
HYDROLOGICAL MODELS
SOIL-MOISTURE
RIVER
WATER
CLASSIFICATION
SIMULATIONS
VARIABILITY
PERFORMANCE
PARAMETERS
Ubicación del archivo
http://dx.doi.org/10.1016/j.jsames.2022.103727
Categoría OCDE
Geociencias
Multidisciplinario
Materias
MODELO DE SUPERFICIE TERRESTRE
MODELOS HIDROLÓGICOS
SUELO-HUMEDAD
RÍO
AGUA
CLASIFICACIÓN
SIMULACIONES
VARIABILIDAD
RENDIMIENTO
PARÁMETROS
Disciplinas de la OCDE
Oceanografía, Hidrología y Recursos del Agua
Meteorología y Ciencias Atmosféricas
Geociencias
Título de la cita (Recomendado-único)
Impact on discharge modelling using different spatial and temporal resolution scenarios in South of Chile
Identificador del recurso (Mandatado-único)
artículo original
Versión del recurso (Recomendado-único)
version publicada
Condición de la licencia (Recomendado-repetible)
0
Derechos de acceso
restringido
Access Rights
restringido
Id de Web of Science
WOS:000783080700001
Colecciones
Colección Publicaciones Científicas
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