Abstract: No Abstract Available

Abstract: No abstract available.

Abstract: Jet streaks (local wind maxima) are prominent features of current systems both in the high and lowtroposphere. As particles in the core of the current flow through them, they experience cyclical velocityoscillations whose ...

Abstract: An air particle alternately speeds up and slows down as it passes through local isotach maxima. It is shown that, on the average, the observed period of such speed variations in the core of the jet stream is about twice ...

Abstract: On February 4, 1960, a polar air mass penetrated in depth southward to the latitude of a trough in the subtropical jet stream. The subtropical and polar fronts amalgamated into a remarkably deep inversion, with temperatures ...

Abstract: A reexamination is made of the seasonal course of extratropical cyclone activity over the North Pacific based mainly on monthly cyclone statistics by Whittaker and Horn and upper-tropospheric wind analyses by Sadler, with ...

Abstract: Computations of various kinds are synthesized to give an estimate of the angular momentum balance for the principal latitude zones. Contributions considered are frictional and mountain torques, atmospheric fluxes due to ...

Abstract: Frontogenesis (FG) is examined in a ?channel model? based on a primitive-equation isentropic formulation by Eliassen and Raustein. Meridional temperature gradients, static stability and a tropopause are specified to give ...

Abstract: The circulations that alter the baroclinic structure along wave-shaped currents are investigated for gradient and nongradient flow. In the case of deformations which result in an increase of baroclinity and vertical shear ...

Abstract: In typical squall-line situations wherein the wind veers strongly with height, individual convective storms move as much as 60 deg right or 30 deg left of the direction of the mean wind in the cloud layer. It is shown that, ...