Dissipation of heat from a thermal effluent

The relative, magnitudes of surface cooling and lateral diffusion and advection from a thermal effluent are investigated. Data have been gathered at Nine Mile Point, east of Oswego, New York.,An estimate of the energy balance of this plume is made. The effective lateral diffusion coefficient obtained from this budget is larger than most values published. Also, surface cooling is suggested to be larger than that estimated by a Dalton type formula. This suggestion is supported by an estimate of advection of sensible heat above the plume. A modification of the temperature of the air over the plume is indicated by the data, although no increase in vapor pressure is observed. However, the variance of the vapor pressure in both time and space suggests a high degree of turbulence.