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Showing 1 to 4 of 4 for “"African waves"”.
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The generation of African waves
… that westward propagating disturbances, known as African waves. originate as perturbations on the low level easterly jet which is present over northern Africa during the season of intense wave activity. A linearized, pseudo-spectral, primitive equation model is used to simulate the response of the …
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African Easterly Waves: Evolution and Relationship to Atlantic Tropical Cyclones
… of all Atlantic hurricanes originate from African easterly waves. Yet, less than 20% of all African waves originate tropical cyclones (including hurricanes). It is of interest to investigate if African waves involved in cyclogenesis possess special characteristics, or if the environment in …
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On the scale interaction between African easterly waves and convention
… channel model is used to study the dynamics of African waves. In part I the structure and energetics of the African easterly waves are well replicated compared to observations. Highly simplified physical processes, including Ekman damping and relaxation, are included to study the dynamic …
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The Genesis and Evolution of African Easterly Waves
The genesis and evolution of easterly waves over the Atlantic Ocean are investigated with a moist multi-level quasi-geostrophic model. The origin of African waves is first re-examined as a linear instability problem of a general basic zonal flow with/without a parameterized latent heating. The …