A TEST OF SEVERAL EVAPORATION EQUATIONS FOR WATER TEMPERATURE SIMULATIONS IN LAKES

Evaporative heat loss is an essential component of any heat budget use d for the modeling of lake water temperatures. Seven evaporative heat loss equations were tested in a year-round, physically-based temperatu re and dissolved oxygen model for lakes. Deciding which equation to ch oose for use in the year-round model was based on the goodness of fit of the simulated vs. measured surface temperatures, which were taken a t a depth of 1 m below the water surface. An equation which includes f ree and forced convection components and which was previously used for cooling ponds gave the best fit between temperature simulations and m easurements.