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High-drag states and lee vortices in stratified flow over topography
Stratified flow with uniform basic wind and stability past long three-dimensional (3d) ridges is studied in the absence of surface friction and planetary rotation. The dominant control parameters for this problem are the nondimensional mountain height e=Nh0U0 and the horizontal aspect ratio beta (i.e., ratio of cross-stream ...
Stratosphere-troposphere exchange and the impact of commercial aviation on the atmosphere
The exchange of mass and chemical constituents between the stratosphere and the troposphere is examined on a variety of time scales using various techniques. Estimates are developed of the stratosphere-troposphere exchange of important chemical species, and commercial aircraft emissions. Various methods for stratosphere-troposphere ...
Markov model studies of the El Niño-Southern Oscillation
Aspects of the El Nino-Southern Oscillation are investigated using statistical models derived from observational data sets of surface and subsurface temperature in the tropical Pacific Ocean. Topics examined include: the existence of a seasonal cycle in the unforced internal dynamics of the sea surface temperature (SST) anomaly ...