An Investigation of Water Surface Temperature by an Airborne Infrared Radiometer: Lake Hefner, Oklahoma

摘要

The effect of a monomolecular film of cetyl alcohol (hexadecanol) on the surface temperature of Lake Hefner, Oklahoma, was investigated using an airborne infrared radiometer. It was found that in three of six cases studied, the monomolecular film produced a temperature rise at the water surface. The temperature rise seems to be caused by an interaction of latent heat flux and sensible heat flux from the subsurface water. The grid pattern flown by the aircraft over the lake must be chosen carefully to delineate the monolayer. In three cases for which significant warming was found, two showed good agreement of the isotherm pattern with the film boundary. Comparisons of aircraft and boat radiation surface temperature indicate that the intervening atmosphere causes the aircraft reading to be about 1.0C lower than the boat reading. (Author)