Estimativa da evaporação de lagos no estado de Mato Grosso, Brasil

Abstract

Evaporation is one of the components of the hydrological cycle and its estimation is essential for the planning and operation of reservoirs, as well as for the management of water resources. Considering that the state of Mato Grosso is a major producer of grains and that it has been expanding agribusiness more and more and developing in the industry of harnessing water potential, the construction of medium and large reservoirs for irrigation and power generation is increasingly on the agenda, therefore, studies aimed at evaporation of free liquid surfaces are of paramount importance. In this context, the objective of this work was to estimate the evaporation of liquid surfaces in the state of Mato Grosso. Evaporation was estimated using the Penman (1948) method, using data from 31 automatic meteorological stations belonging to the Instituto Nacional de Meteorologia (INMET). Daily meteorological data obtained from automatic stations were used, with historical series ranging from 2007 to 2019. It was observed that the highest evaporation intensities occurred in the transition period between the dry season and the rainy season.