Abstract: The average structure of westward traveling disturbances that contribute to relative maxima found in space-time spectra from 13?32 days at northern latitudes is determined for each season. A compositing method used employs ...

Abstract: A space-time spectral analysis of a long time series of observed geopotential heights for each season at several levels and latitudes of the Northern Hemisphere was performed as part of a continuing investigation of ...

Abstract: In contrast to the winter rain-dominated region along the Atlantic and Mediterranean coasts in northwest Africa, the semiarid to arid southern foothills of the Atlas Mountains receive significant contributions to their ...

Abstract: Using 20 yr of outgoing longwave radiation observations, the complex behavior of the higher- (6?25-day) and lower- (25?70-day) frequency bands of tropical intraseasonal convective oscillations is investigated. Emphasis is ...

Abstract: The intraseasonal (40?50 day) oscillation in convection over the tropical Southern Hemisphere (0°?15°S) is examined using two years of ECMWF analyses. The initial period investigated was 1 May 1984?30 April 1986. This ...