Abstract: Computation of thickness and extrapolation methods for the obtaining of 25-mb heights are discussed. Data used in construction of a set of extrapolation graphs for the 25-mb level over North America north of 50N show, as ...

Abstract: Some years ago, a series of maps of cover types in Labrador-Ungava was prepared at McGill University. These maps show the distribution of surfaces which have obvious wide variations in albedo and evaporative characteristics. ...

Abstract: Cloud amount and duration of sunshine are generally used to estimate direct and diffuse solar radiation income at the ground, where radiation instruments are not available. This method has serious drawbacks and a consideration ...

Abstract: The stations examined are Byrd (80°01? S, 119°31? W, 1533 m MSL), Wilkes(66°15? S, 110°35? E, 12 m MSL) and Sachs, Harbour, N.W.T. (71°57? N, 124°44? W, 84.4 m MSL). Synoptic observations for one year were used to calculate ...

Abstract: An energy budget model has been used, with daily synoptic surface and upper air data from four stations in East Africa, to calculate all terms of the surface energy balance once for each day and each night of 1973. The ...