A Simple Model for Shallow Lake Evaporation

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  • 1 Royal Netherlands Meteorological Institute, De Bilt, the Netherlands
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Abstract

By combining the empirical model of Priestley and Taylor (1972) and the well-known Penman equation, a simple expression is obtained for evaporation from a shallow lake. This model is tested for a large lake in the Netherlands with an area of about 460 km2 and an average depth of 3 m. The estimated values of evaporation of 1, 5, 10 and 20 days are compared with energy-budget measurements. The comparison indicates that the proposed model gives good results for periods of 10 days or more.

Abstract

By combining the empirical model of Priestley and Taylor (1972) and the well-known Penman equation, a simple expression is obtained for evaporation from a shallow lake. This model is tested for a large lake in the Netherlands with an area of about 460 km2 and an average depth of 3 m. The estimated values of evaporation of 1, 5, 10 and 20 days are compared with energy-budget measurements. The comparison indicates that the proposed model gives good results for periods of 10 days or more.

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