Estimación Del Balance Hídrico De Una Cuenca Andina Tropical

Translated title of the contribution: Estimation of the water balance of for a small tropical andean catchment

Paola Duque-Sarango, Ronald Cajamarca-Rivadeneira, Beverley C. Wemple, Manuel E. Delgado-Fernández

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The present study seeks to estimate the water balance for a tropical catchment in the Andes of Ecuador. Temporal variation in precipitation and temperature of the Chaquilcay microcatchment were studied; it is a natural ecosystem situated in the Aguarongo Protected Forest in Gualaceo, Ecuador. Four meteorological stations of the National Institute of Meteorology and Hydrology (INAMHI-Instituto Nacional de Meteorología e Hidrología) were studied for 33 years (1982-2015), in order to quantify the contributions and losses of water, and statistical analyzes of the time series. To fill and validate the series of precipitation and temperature, a double mass analysis was used to develop reference stations and fill missing records. Temperature data were supplemented with the isothermal raster of Ecuador. A digital elevation model (DEM) was used to predict the amount of sun light, and the Thornthwaite method (1948) was applied to estimate time series of evapotranspiration. Our water balance analysis indicates 843;7 mm of total annual precipitation, a storage difference of 18;71 mm representing 2;22% of the total annual precipitation, surplus of 144;5 mm, and current evapotranspiration of 680;5 mm, amounting to 17;13% and 80;65% of the total annual precipitation, respectively.

Translated title of the contributionEstimation of the water balance of for a small tropical andean catchment
Original languageSpanish
Pages (from-to)56-69
Number of pages14
JournalGranja
Volume29
Issue number1
DOIs
StatePublished - 1 Jan 2019

Keywords

  • Catchment water balance
  • Evapotranspiration
  • Northern Andes
  • Thornthwaite
  • Tropical hydrology

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