Generation of daily and monthly flows using the GR4j Method and the ERA5 gridded climate information in the Pachachaca basin up to the Santa Rosa station
Read ArticleDate of Conference
July 18-22, 2022
Published In
"Education, Research and Leadership in Post-pandemic Engineering: Resilient, Inclusive and Sustainable Actions"
Location of Conference
Boca Raton
Authors
Alfaro-Gurrionero, Cesar David
Sovero-Gómez, Shantall Valeria
Carmona-Arteaga, Abel
Campos-Vasquez, Neicer
Abstract
The objective sought with this research is to be able to build a series of daily flow rates in the Pachachaca basin up to the Santa Rosa hydrometric station for a period of 30 years (1990-2020). These have been generated using rainfall and average temperature data from the ERA5 climate grid product and the flow measurement records of the Santa Rosa station for the days between the years 2019 to 2020, using the GR4j method. Simulated downloads were evaluated using efficiency and error statistics. Satisfactory results were obtained, which are shown in the calibration and validation stage of the GR4j hydrological model. The statistical evaluation also showed that the GR4j model, despite using only four parameters, performs very well. This finding indicates that the evaluated models can be integrated as an alternative for strengthening the daily hydrological forecast in the Antabamba river basin up to the Santa Rosa station.