Actual evapotranspiration at the Andean grasslands: comparison of daily and hourly measurements and estimates.

Abstract:

The páramo ecosystem provides most of the water for the tropical Andean highlands in South America. Thus, the proper closure of the water balance in this environment is of outmost importance. Although actual evapotranspiration (ETa) is a key component of the water balance, it has not been properly assessed at the páramo. ETa has been recently measured through the eddy-covariance (EC) method. However, this technology is still expensive, complex, and rarely available at similar sites. This study aims at finding alternative methods by comparing EC daily and hourly measurements with lysimeters (Lys) measurements and ETa estimates from the water balance (WB), the energy balance (EB), the Penman-Monteith calibrated equation (PMCal), and two hydrological models: Probability Distribution Model (PDM) and Hydrologiska Byråns Vattenbalansavdelning model (HBV-light). The study site was the Zhurucay …

Año de publicación:

2019

Keywords:

Fuente:

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