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Evidence for the Influence of the Agulhas Current on Regional Atmospheric Circulation Patterns
Publisher: American Meteorological Society
Abstract: The Agulhas Current is much the strongest western boundary current in the Southern Hemisphere transporting about 65 Sv of warm water along the southeast coast of Africa. South of Africa, it retroflects back into the South ...
The Dynamics of Coastally Trapped Mesoscale Ridges in the Lower Atmosphere
Publisher: American Meteorological Society
Abstract: The dynamics of coastally trapped ridges that propagate in the marine layers of western North America and southeastern Australia is examined. A nonlinear semigeostrophic theory shows that the coastal ridges develop initially ...
Mesoscale Convective Complexes over Southern Africa
Publisher: American Meteorological Society
Abstract: he maximum spatial correlation technique (MASCOTTE) is an objective and automated method developed to simultaneously determine both the structural properties and evolution (tracking) of cloud shields of convective systems. ...
A Numerical Model Study of an Intense Cutoff Low Pressure System over South Africa
Publisher: American Meteorological Society
Abstract: Investigations of extreme rainfall events in the southern African region are limited by the paucity of the observational network. Furthermore, the lack of full radar coverage for South Africa makes quantitative precipitation ...
The Role of Mesoscale Convective Complexes in Southern Africa Summer Rainfall
Publisher: American Meteorological Society
Abstract: combination of numerous factors, including geographic position, regional orography, and local sea surface temperatures, means that subtropical southern Africa experiences considerable spatial and temporal variability in ...
A Curvilinear Ocean Model Using a Grid Regionally Compressed in the South Indian Ocean
Publisher: American Meteorological Society
Abstract: It is shown that a global curvilinear grid with variable resolution is an efficient way of providing a high density of grid points in a particular region. In equilibrium experiments using asynchronous time steps, this type ...
Ocean Model Diagnosis of Interannual Coevolving SST Variability in the South Indian and South Atlantic Oceans
Publisher: American Meteorological Society
Abstract: A global ocean model (ORCA2) forced with 50 yr of NCEP?NCAR reanalysis winds and heat fluxes has been used to investigate the evolution and forcing of interannual dipolelike sea surface temperature (SST) variability in the ...
Relationships between South Atlantic SST Variability and Atmospheric Circulation over the South African Region during Austral Winter
Publisher: American Meteorological Society
Abstract: The Southwestern Cape (SWC) region of South Africa is characterized by winter rainfall brought mainly via cold fronts and by substantial interannual variability. Previous work has found evidence that the interannual ...