Evaluation of operational lake evaporation methods in a Canadian Shield landscape
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Date
2013-08-23
Authors
Slota, Phillip Michael Anton
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Abstract
This thesis presents the findings of a study examining the hydrological processes controlling lake evaporation in a Canadian Shield landscape. The purpose of this study is to provide a recommendation on a suitable operational lake evaporation method for implementation in a partially-physically-based meso-scale hydrological model to improve simulation of the climate-hydrological feedback loop.
Detailed hydroclimatic observations were recorded for two lakes located in northwestern Ontario, Canada to estimate actual lake evaporation using a Bowen ratio energy balance approach. Multiple operational lake evaporation methods were evaluated for their ability to reproduce the reference lake evaporation rates. Each method was tested for its sensitivity to regionalized and estimated forcing data.
The results of this study found a modified version of the Priestley-Taylor combination method most accurately reproduced measured lake evaporation. This method incorporates a novel lumped lake heat storage model developed to estimate heat storage fluxes using re-gional climatic forcing.
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Hydrology, Civil Engineering, Water Resources