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Velocity Fluctuations in the Mountain Wind
Publisher: American Meteorological Society
Abstract: Horizontal velocity spectra of the mountain wind show that maximum turbulent energy is generated by waves the order of 10 km in length and a period of 1 hr, thereby filling the spectral gap between purely micrometeorological ...
Wet and Dry Conditions and Pressure Anomaly Fields over South Africa and the Adjacent Oceans, 1963–79
Publisher: American Meteorological Society
Abstract: Circulation anomaly fields for wet and dry spells on monthly, seasonal and near-decadal scales are presented to show that at all these scales, both at the surface and at 500 mb, wet conditions are associated with negative ...
Observations of Regional Topographically-Induced Wind Systems in Natal
Publisher: American Meteorological Society
Abstract: Observations are presented to show the occurrence of boundary layer oscillations in the form of widespread and large-scale topographically-induced mountain-plain and plain-mountain winds over the deeply dissected eastern ...
Estimating Above and Below Normal Rainfall Periods over South Africa, 1972–2000
Publisher: American Meteorological Society
Abstract: By fitting a trigonometrical regression model to a regionally averaged time series for the period 1910?72, and by extrapolation to the year 2000, an estimate of future extended wet and dry spells has been made for the ...
Large-Scale Recirculation of Air over Southern Africa
Publisher: American Meteorological Society
Abstract: Kinematic air parcel trajectory analysis is used to determine patterns of horizontal air transport in 2000 km ? 2000 km areas over southern Africa. From these, composite zonal and meridional transport fields are derived ...