Abstract: A methodology for choosing a hybrid σ?p (sigma?pressure) vertical coordinate of the Simmons?Strüfing form for a global model is presented. The method focuses on properties of the vertical derivative of the terrain-following ...

Abstract: The ?Doppler spread? theory of atmospheric gravity waves has developed rapidly in recent years, from an initial theory of wave spectra into a general parameterization of gravity wave effects for use in global models of the ...

Abstract: straightforward methodology is presented for converting the deterministic multiwave parameterizations of nonorographic gravity wave drag, currently used in general circulation models (GCMs), to stochastic analogs that use ...

Abstract: Four extended observational campaigns were conducted during August and November 1988 with an ST (stratosphere?troposphere) radar in southern Australia during the passage of cold fronts over the system, giving around 30 ...

Abstract: The WKB ray-tracing formalism is extended to accommodate internal gravity waves of all frequencies in a rotating, stratified, and compressible three-dimensional atmosphere. This includes the derivation of equations governing ...

Abstract: The major stratospheric sudden warming (SSW) of January 2006 is examined using meteorological fields from Goddard Earth Observing System version 4 (GEOS-4) analyses and forecast fields from the Navy Operational Global ...

Abstract: The gravity wave (GW)?resolving capabilities of 118-GHz saturated thermal radiances acquired throughout the stratosphere by the Microwave Limb Sounder (MLS) on the Aura satellite are investigated and initial results ...

Abstract: ffects of horizontal geometrical spreading on the amplitude variation with height of linear three-dimensional hydrostatic orographic gravity waves (OGWs) are quantified via relevant simplifications to the governing transform ...

Abstract: umerical transform solutions for hydrostatic gravity waves generated by both uniform and sheared flow over elliptical obstacles are used to quantify effects of horizontal geometrical spreading on amplitude evolution with ...