Abstract
A set of regression equations, which relate the 05, 25, 50, 75, and 95 per cent points of the surface-air temperature frequenry distributions over the North Atlantic Ocean to mean temperatures interpolated from charts contained in the U. S. Navy Marine Climatic Atlas of the World, Vol. I, North Atlantic Ocean, is obtained. With these equations and the previously mentioned climatic atlas, one can estimate the surface-air temperature frequency distribution at any given point over the North Atlantic Ocean. Tests conducted with independent data indicate that the equations give accurate results.