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Stanley L. Rosenthal

Abstract

Frequency distributions of aperiodic diurnal ranges of temperatures at 9 of the North Atlantic Ocean Vessel Stations are examined. It is found that the means, disperions, and asymmetries of these distributions are largest in winter and smallest in summer. It is also found that the aperiodic diurnal range exceeds the periodic diurnal range on virtually all winter days and on the great majority of summer days.

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Stanley L. Rosenthal

Abstract

Power spectra, covering a range of periods of from 1.2 to 30 days, of the zonal- and meridional-wind components at the 5000- and 40,000-ft levels at seven low latitude stations are presented. A brief discussion of the spectra is given.

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Stanley L. Rosenthal

Abstract

No Abstract Available.

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Stanley L. Rosenthal

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.

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Stanley L. Rosenthal

Abstract

If the perturbation of the zonal wind component and the Coriolis term which arises in the zonal equation of motion as a result of vertical motions are neglected, the linearized vorticity equation and the continuity equation (when written in pressure coordinates) become a complete set for the meridional wind and vertical motion perturbations. This set is solved for a class of easterly waves which reach their maximum intensity at the equator and dampen poleward.

The theoretical streamlines and the theoretical field of divergence both agree quite well with their empirical counterparts. On the other hand, the theoretical isotachs are somewhat distorted and the theoretical phase speed is a bit low.

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Stanley L. Rosenthal

Abstract

No Abstract Available.

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Stanley L. Rosenthal

Abstract

This paper gives the results of an investigation of the interdiurnal variability of surface-air temperature at 9 of the North Atlantic Ocean Vessel Stations. Computations were performed for each month of the year over a four-year study period. Several aspects of the computational results are discussed in relation to the analogous statistics at land stations.

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Stanley L. Rosenthal

Abstract

Axisymmetric hurricane simulators with a hydrostatic model, in which the release of latent heat occurs totally in convective elements that are explicitly resolved on a 20 km horizontal grid, are presented. It is shown that there is good reason to believe that the failures of earlier attempts in this direction were due to model and experimental design. A fairly complete description of the model is given. The solutions do not depend upon overly large lateral mixing coefficients nor upon artificial numerical smoothing procedures. The relationship between this work and CISK theories of hurricane development is discussed. The impact of this work on cumulus parameterization studies is also discussed.

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