Abstract:Atmospheric simulations produced by the Canadian Climate Centre general circulation model (GCM) were examined to detect Rossby normal modes such as the familiar "5-day" and "16-day" waves. Space-time spectral analysis of the simulated geopotential fields showed a concentration of power near the scales and frequencies predicted for the two gravest Rossby modes of both zonal wavenumbers one and two. By filtering the time series of simulated geopotential and wind fields in narrow bands around these spectral peaks… Show more
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