The physics of orographic gravity wave drag
Webb1 juli 2013 · Abstract A version of the Canadian Middle Atmosphere Model (CMAM) that is nudged toward reanalysis data up to 1 hPa is used to examine the impacts of … Webb15 juli 2024 · Tests using both regional and global simulations, ranging in grid spacing from 2–130 km, demonstrate that the scale-aware scheme provides a more constant total, …
The physics of orographic gravity wave drag
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Webbdynamics of the model, whereas smaller-scale processes such as unresolved non-orographic gravity wave drag (GWD) need to be parametrized. Orographic gravity waves have a similar range of vertical and horizontal wavelengths to that of non-orographic waves (e.g. Whiteway and Duck, 1999), and are thus also often poorly resolved by GCMs. WebbA strong signal of the two-day wave is diagnosed in a middle atmosphere GCM, with characteristics very similar to those of the observed two-day wave. It results from an instability, but its global structure shows similarities to a Rossby-gravity planetary normal mode. It has a remarkable potential vorticity structure in wave 3 and sometimes wave 4 …
WebbActing Deputy Director/Environmental Modeling Center. NOAA/NWS/Environmental Modeling Center. Jun 2011 - Aug 20113 … WebbJournal of Geophysical Research: Atmospheres Volume 122, Issue 21p. 11,301-11,312 Research Article Free Access Impacts of Horizontal Propagation of Orographic Gravity Waves on the Wave Drag in the Stratosphere and Lower Mesosphere Xin Xu, Xin Xu orcid.org/0000-0002-4495-3677
WebbWhen orographic gravity waves (OGWs) break, they dissipate their momentum and energy and thereby influence the thermal and dynamical structure of the atmosphere. This OGW forcing mainly takes place in the middle atmosphere. It is … Webb28 nov. 2024 · An overview of the past, present and future of gravity-wave drag parametrization for numerical climate and weather prediction models. Atmos. Ocean 2003, 41, 65–98. [Google Scholar] Alexander, S.P.; Shepherd, M.G. Planetary wave activity in the polar lower stratosphere. Atmos. Chem. Phys . 2010, 10 ... Gravity wave and orographic ...
Webb1 juli 2014 · The physics of orographic gravity wave drag. Authors. Miguel A C Teixeira; Publication date July 1, 2014. Publisher ... The orographic gravity wave drag is first introduced in its simplest possible form, for inviscid, linearized, non-rotating flow with the Boussinesq and hydrostatic approximations, ...
WebbMichael Toy is a CIRES numerical weather prediction (NWP) model developer who works in the Earth Prediction Advancement Division (EPAD) of NOAA's Global Systems Laboratory. He works on developing and testing physics parameterizations, particularly gravity wave drag parameterizations, which represent the drag forces on the atmospheric flow due to … opal stack ringWebb18 okt. 2024 · The effects of vertical wind shear on orographic gravity wave drag derived previously from inviscid linear theory are evaluated using reanalysis data. Emphasis is … iowa evening pick 3 winning numbersWebb[1] We report the first joint observations of convectively generated gravity waves (GWs) using an OH airglow imager in Colorado and the Atmospheric Infrared Sounder (AIRS) onboard the Aqua satellite. Convective GWs, appearing as concentric rings, are observed over the western Great Plain regions of North America in the evening of 3 June 2008 in … iowa ev charging stationsWebbThe physics of orographic gravity wave drag 1. Introduction. The atmosphere above the boundary layer is almost invariably characterized by positive static... 2. General Framework for Linearized Mountain Waves. To understand how different physical … opal stained glassWebb1 juli 2014 · The drag and momentum fluxes produced by gravity waves generated in flow over orography are reviewed, focusing on adiabatic conditions without phase transitions … opal staples thickWebbGravity or inertia-gravity waves are ubiquitous in the Martian atmosphere [1, 2]. Gravity waves (GWs) are described as orographic when they are excited by an isentropic … opals sand resortWebb11 juli 2014 · The orographic gravity wave drag is first introduced in its simplest possible form, for inviscid, linearized, non-rotating flow with the Boussinesq and hydrostatic … iowa evening pick 3