The origin of African wave disturbances during Phase III of GATE.

Abstract

Spectrum and cross-spectrum analysis are used to determine the source region of the waves observed during the period 23 August-19 September 1974. It is proposed that the large wave growth in the region between 0 and 10oE was caused by a combination of 2 factors: the increased instability of the mid-tropospheric easterly jet in that region, and the better organization of the convection by the enhanced waves allowing condensation heating also to contribute to their growth.-from Authors