Titlebook: ;

palliate

漫步

Melodrama

Sensitivity studies using the Hines and Fritts gravity wave drag parameterizations,l mean circulation and solar tides. Results from the zonal mean version of the model indicate that although both schemes close off the stratospheric jets, the Fritts scheme produces somewhat unrealistic latitudinal structures in the mesospheric zonal winds. The two schemes have a very different impa

PRO

Modeling the Seasonal Cycles and Equatorial Oscillations with a Parameterization of the Doppler Spr6a, b) has been incorporated into the 2D version of a numerical spectral model (NSM) of the middle atmosphere. With a globally uniform flux of (quasi) isotropically propagating GW emanating from the troposphere, the NSM was integrated for several model years, and preliminary results were presented b

兴奋过度

The representation of sub-grid scale orography in GCMs,sed using a very accurate dataset (185mxl85m) of the Alps. The linear approach shows that for horizontal scales varying between few Kms and 100Km mountains excite gravity waves which transport significant angular momentum. Nevertheless, this linear view is not sufficient for real mountains, and upst

暴发户

Measurements of Intermittency in the Upper Stratosphere and Mesosphere,uction to the instrumentation (Section 2), Section 3 describes an extension of the initial measurements of superadiabatic lapse rates by Sica and Thorsley (1996a). A taste of the spatial and temporal spectral retrievals possible with the lidar measurements is given in Section 4. In Section 5, the sp

新鲜

半身雕像

Experimental Constraints on Gravity Wave Parameterization from in Situ Measurements of Temperature rbulent energy dissipation rates. Turbulent heating is strongest around the mesopause region in summer (10 to 20 K/d). During winter, the heating rates are considerably smaller and turbulence is distributed over a wider altitude range. It is shown that intense radar echoes observed in the mesopause

放逐

Analysis of Intermittency in Aircraft Measurements of Velocity, Temperature and Atmospheric Tracersbi-fractal” model is used to interpret structure functions obtained for velocity and N.O. Finally, we show a case of gravity wave-tracer filament interaction in the ER-2 data. We argue that such interactions may increase cross-isentropic mixing of trace gases by gravity waves.

刚毅

Observations of Gravity Waves with the UARS Microwave Limb Sounder, but for a short period of time. It is difficult in general for space-borne sensors to obtain the same resolutions, but observations of GWs at somewhat larger scales are feasible, for example using saturated radiances from the Upper Atmosphere Research Satellite (UARS) Microwave Limb Sounder (MLS) [