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Abstract: Systematic studies of certain meridional cross sections carried out at the University of Chicago indicate that the westerlies in the upper troposphere and at the level of the tropopause often show a very narrow zone with ...

Abstract: The surface stress in tropical storms is computed as a function of the radius, from mean wind data in the troposphere. If only the symmetrical part of the circulation is considered, the stress ranges from 1 dyne per square ...

Abstract: An attempt is made to study, by means of a detailed synoptic analysis, the three-dimensional air-motion in a typical outbreak of a polar air-mass. The mean vertical velocities at different levels over the entire cold-air ...

Abstract: The period of 3?7 February 1947 was marked by a radical change in the circulation over North America from westerly flow with only small perturbations to a pattern dominated by large warm anticyclones over the northern part ...

Abstract: The mean meridional circulation is computed for the northern hemisphere winter. The equatorward current in the low troposphere has a strength of l?3 mps near 10 to 15 deg lat, and the return current, centered near 200 mb, ...