From an analysis of the flow over and around the Himalayas during the high summers of 1958 and 1959, it is deduced that the large-scale upper air patterns have significant effects on the surface circulation. The effect of the plateau (due to surface heating) is to induce a surface cyclonic circulation which is however often subdued by dynamic effeets. This result contradicts previous studies, in which it has always been maintained that anticyclonic circulation should result. [...]

Measurements of solar radiation taken at Point Barrow, Alaska, in 1962 are analyzed and evaluated. This is accomplished by comparing the measurements with the theoretical clear sky radiation, calculated using Houghton's transmissivity coefficients. Global radiation measurements for the Spring are found to be in error by as much as 30%. The error is attributed to frost deposits on the glass dome of the solarimeter. The method used to compute the clear sky radiation is discussed in detail and a nomogram for evaluating this parameter is given. The effects on the incoming solar radiation of precipitable water, cloud cover, and surface albedo are evaluated and discussed. [...]

The geostrophic kinetic energy 30N to 8ON at 1000 mb, 500 mb, 100 mb and 25 mb is computed on a daily basis for January, 1959, employing Fourier analysis. The general characteristics of the energy spectra are presented as means for the month. The daily variations reveal that tropospheric "shore" wave kinetic energy is a good indicator of surface cyclonic activity, and that the effect of tropospheric synoptic scale disturbances is strongly damped in the lower stratosphere. Four levels proved inadequate to define the vertical structure of the ultra-long waves. [...]

The grid point method commonly used in numerical calculations presents serious problems in experiments that require a global coverage of the meteorological variables. The shape of the earth and the form taken by the meteorological equations in a system where longitude and latitude are the basic coordinates, suggest the use of spherical harmonics for the horizontal specification of the variables. [...]

The aim of this thesis is (a) to analyse five years of published climatological data in order to obtain detailed climatological statistics for reasearch workers, and also to serve as a basis for describing the climate of Barbados. This is the main part of the thesis. (b) to give explanatory causes of the variations in climate, both seasonal and aperiodic, especially of temperature and rainfall regimes, at Waterford in particular, and the whole island in general. [...]

A computer program was designed for the calculation of infrared radiation fluxes and flux divergences in the atmosphere. The program essentially follows the techniques suggested by Kondratiev and Elsasser, and is based on their "radiation tables". Atmospheric water vapor and carbon dioxide are fully considered, and the effects of clouds of varylog thermodynamic blackness are incorporated. [...]

In 1939 Rossby published a theory of wave motion in the atmosphere which formed the basis of later work on this subject. One year later Haurwitz extended the theory to waves of finite lateral extent and to wave motion on a spherical earth. During the next ten years various investigators, including Rossby, developed the theory further, attempting to approximate more closely the baroclinic nature of the atmosphere. [...]

The purpose of this thesis is essentially a delineation of the climatic history of the Near East, particularly recent geological and historical times. The area here considered under the term 'Near East' comprises Asia Minor, Persia, the Arabian Peninsula and Egypt. On the other hand, the time span designated by 'recent geological time' and 'historical time' are taken to mean the period 10,000 - 500 B.C., and 500 B.C. to the present respectively. For the former period, the evidence used is almost exclusively derived from geology, whereas historical sources supplement the geological and allied evidence for the latter.

One of the notable contributions of radar to the study of precipitation has been the revelation of the fact that much of the precipitation which reaches the ground as continuous rain or snow has its origin aloft in compact and discrete cells, whose horizontal dimensions may be of the order of a mile or so and which extend vertically for several thousands of feet. Marshall (1953) published RHI* photographs of such cells and the snow trails which derive there from, and formulated the geometry of the trail shaped in the wind field; similar analyses were performed independently by L’hermitte (1952) and Browne (1952).

This paper discusses the adequacy of representing the constant pressure surfaces in the atmosphere by considering only two levels, 1000 mb and 500 mb. The equations of motion and the thermodynamic equation are reviewed, together with the formulation of the Sawyer-Bushby and Godson two-level models. The height data for eight standard pressure levels from 1000 mb to 100 mb for January 1956 were used to determine linear correlation among the various levels. The multiple regression equations, so determined, were tested against independent data in 1958. It is found that the two levels account for most of the contour height variance up to 300 mb. The degree of representation drops above 300 mb and is quite variable at 100 mb. The experiment suggests that two-level representation of the synoptic scale contour height patterns is adequate, up to the 300 mb level.