搜索结果: 1-15 共查到“gravity wave”相关记录17条 . 查询时间(0.359 秒)
Planetary and gravity wave signatures in the F-region ionosphere with impacton radio propagation predictionsand variability
Radio propagation ionization
2015/9/14
The aim of this work within the WP 3.1 of the COST 271 Action is the characterization of the variability introduced in the F-region ionosphere by -Planetary Wave Signatures- (PWS) and -Gravity Wave
S...
Vertical resolution dependence of gravity wave momentum flux simulated by an atmospheric general circulation model
momentum fl ux simulated general circulation model
2015/8/6
The dependence of the gravity wave spectra of
energy and momentum flux on the horizontal resolution
and time step of atmospheric general circulation models
(AGCMs) has been thoroughly investi...
Reducing numerical diffsion in interfacial gravity wave simulations
interfacial gravity wave miscible advection universal limiter TVD Boussinesq
2015/6/30
We demonstrate how the background potential energy is an excellent measure of the eective numerical diusion or antidiffusion of an advection scheme by applying several advection schemes to a standin...
Stability analysis of a tidally excited internal gravity wave near the centre of a solar-type star
planetary systems stars: rotation binaries: close hydrodynamics waves instabilities
2011/9/15
We perform a stability analysis of a tidally excited nonlinear internal gravity wave near the centre of a solar-type star in two-dimensional cylindrical geometry. The motivation is to understand the t...
Stochastic resonance in a nonlinear model of a rotating,stratified shear flow,with a simple stochastic inertia-gravity wave parameterization
Stochastic resonance nonlinear model shear flow stochastic inertia-gravity wave parameterization
2009/11/11
We report on a numerical study of the impact of short, fast inertia-gravity waves on the large-scale, slowly-evolving flow with which they co-exist. A nonlinear quasi-geostrophic numerical model of a ...
On the interaction of wind and steep gravity wave groups using Miles' and Jeffreys' mechanisms
interaction of wind steep gravity wave groups Miles' and Jeffreys' mechanisms
2009/11/2
The interaction of wind and water wave groups is investigated theoretically and numerically. A steep wave train is generated by means of dispersive focusing, using both the linear theory and fully non...
New perspectives on gravity wave remote sensing by spaceborne infrared limb imaging
New perspectives gravity wave remote sensing spaceborne infrared limb imaging
2010/2/8
Gravity wave (GW) remote sensing from space now has reached a stage of maturity that some first confinements for GW modeling can be deduced. This is in particular due to global distributions of absolu...
The Influence of the Directional Energy Distribution on the Nonlinear Dispersion Relation in a Random Gravity Wave Field
Directional Energy Distribution Nonlinear Dispersion Relation Random Gravity Wave Field
2009/3/7
The influence of the directional distribution of wave energy on the dispersion relation is calculated numerically using various directional wave spectrum models. The results indicate that the dispersi...
Analysis of a jet stream induced gravity wave associated with an observed ice cloud over Greenland
jet stream gravity wave ice cloud Greenland
2009/3/3
A polar stratospheric ice cloud (PSC type II) was observed by airborne lidar above Greenland on 14 January 2000. It was the unique observation of an ice cloud over Greenland during the SOLVE/THESEO 20...
Comparison of Finite-Element and Finite-Difference Schemes. Part II：Two-Dimensional Gravity Wave Motion
Finite-Element Finite-Difference Schemes Two-Dimensional Gravity Wave Motion
2009/2/23
Irregular grid finite-difference techniques lead to equations similar to those obtained using finite-element techniques. The simpler finite-difference equations offer the advantage of greater computat...
Comparison of Finite-Element and Finite-Difference Schemes. Part I：One-Dimensional Gravity Wave Motion
Finite-Element One-Dimensional Gravity Wave Motion Finite-Difference Schemes
2009/2/23
The finite-element scheme requires more computational expense because it is time-implicit and because it requires a smaller time step than the finite-difference scheme. Simulations of normal mode osci...
On the Steady-State Energy Balance of Short Gravity Wave Systems
Steady-State Energy Balance Short Gravity Wave Systems
2009/2/18
Steady-state energy balances of short gravity wave systems generated in a wave tank with and without airflow have been measured and compared with the predictions of perturbation theory. Wind-wave spec...
Computations and Parameterizations of the Nonlinear Energy Transfer in a Gravity-Wave Specturm. Part II：Parameterizations of the Nonlinear Energy Transfer for Application in Wave Models
Nonlinear Energy Transfer Gravity-Wave Spectrum Nonlinear Energy Transfer
2009/1/16
Four different parameterizations of the nonlinear energy transfer Snl in a surface wave spectrum are in investigated. Two parameterizations are based on a relatively small number of parameters and are...
Computations and Parameterizations of the Nonlinear Energy Transfer in a Gravity-Wave Spectrum. Part I：A New Method for Efficient Computations of the Exact Nonlinear Transfer Integral
Nonlinear Energy Transfer Gravity-Wave Spectrum Nonlinear Transfer Integral
2009/1/16
A more efficient method of computing the nonlinear transfer in a surface wave spectrum is developed which is symmetrical with respect to all wavenumbers of the resonant interaction quadruplets. This e...
Some experimental constraints for spectral parameters used in the Warner and McIntyre gravity wave parameterization scheme
experimental constraints spectral parameters McIntyre gravity wave parameterization scheme
2009/1/15
In order to incorporate the effect of gravity waves (GWs) on the atmospheric circulation most global circulation models (GCMs) employ gravity wave parameterization schemes. To date, GW parameterizatio...