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RISBaroclinic Instability of Easterly Jets with Applications to the Summer Mesosphere
Publisher: American Meteorological Society
Abstract: anally and seasonally averaged zonal wind fields in the summer mesosphere are unstable in the Charney-Stern sense, with a primarily baroclinic component. Two-dimensional stability analyses show peaks in the unstable wave ...
A Theoretical Study of Three-Dimensional Barotropic Instability with Applications to the Upper Stratosphere
Publisher: American Meteorological Society
Abstract: Satellite and rocket observations indicate that barotropically unstable waves may exist in the upper stratosphere. To gain some understanding of the effects of vertical mean flow variation on barotropic instability with a ...
Baroclinic Instability in the Venus Atmosphere
Publisher: American Meteorological Society
Abstract: A three-dimensional, spherical, primitive equation eigenvalue model is used to investigate the baroclinic stability properties of the wind and temperature fields in the Venus atmosphere as measured by Pioneer Venus. It is ...
Mesoscale Disturbances in the Tropical Stratosphere Excited by Convection: Observations and Effects on the Stratospheric Momentum Budget
Publisher: American Meteorological Society
Abstract: The importance of the momentum flux of topographically generated mesoscale gravity waves to the extratropical middle atmosphere circulation has been well established for over a decade. Estimates of the zonal forcing due ...
Small-Scale Motions Observed by Aircraft in the Tropical Lower Stratosphere: Evidence for Mixing and its Relationship to Large-Scale Flows
Publisher: American Meteorological Society
Abstract: Measurments of temperature and ozone from instrumental aircraft in the tropical lower stratosphere show the presence of small-scale disturbances generated by 1) underlying cumulus convection and 2) Kelvin-Helmholtz ...
Heating Rates in Tropical Anvils
Publisher: American Meteorological Society
Abstract: The interaction of infrared and solar radiation with tropical cirrus anvils is addressed. Optical properties of the anvils are inferred from satellite observations and from high-altitude aircraft measurements. An infrared ...
Characteristics of Finite Amplitude Stationary Gravity Waves in the Atmosphere of Venus
Publisher: American Meteorological Society
Abstract: This paper extends the study of stationary gravity waves generated near the surface of Venus reported previously by Young et al. to include finite amplitude effects associated with large amplitude waves. Waves are forced ...
Small-Scale Wind Fluctuations in the Tropical Tropopause Layer from Aircraft Measurements: Occurrence, Nature, and Impact on Vertical Mixing
Publisher: American Meteorological Society
Abstract: AbstractThe contribution of turbulent mixing to heat and tracer transport in the tropical tropopause layer (TTL) is poorly constrained, partly owing to a lack of direct observations. Here, the authors use high-resolution ...
On the Susceptibility of Cold Tropical Cirrus to Ice Nuclei Abundance
Publisher: American Meteorological Society
Abstract: umerical simulations of cirrus formation in the tropical tropopause layer (TTL) during boreal wintertime are used to evaluate the impact of heterogeneous ice nuclei (IN) abundance on cold cloud microphysical properties and ...
The NASA Airborne Tropical Tropopause Experiment: High-Altitude Aircraft Measurements in the Tropical Western Pacific
Publisher: American Meteorological Society
Abstract: he February?March 2014 deployment of the National Aeronautics and Space Administration (NASA) Airborne Tropical Tropopause Experiment (ATTREX) provided unique in situ measurements in the western Pacific tropical tropopause ...