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RISA Slowly Varying Model of the Lower Stratospheric Zonal Wind Minimum Induced by Mesoscale Mountain Wave Breakdown
Publisher: American Meteorological Society
Abstract: A model proposed recently by Tanaka and Yamanaka indicated that the breaking of mesoscale mountain waves produces enough drag to predict the weak mean-wind region in the lower stratosphere through every season, especially ...
A Slowly Varying Model of the Quasi-biennial Oscillation Involving Effects of Transcience, Self-acceleration and Saturation of Equatorial Waves
Publisher: American Meteorological Society
Abstract: A numerical simulation of the quasi-biennial oscillations (QBO) is presented using a sophisticated one-dimensional model operating under a slowly varying WKB assumption. The roles of wave transience, wave self-acceleration ...
Formation and Maintenance of the 4-Day Circulation in the Venus Middle Atmosphere
Publisher: American Meteorological Society
Abstract: The Venus 4-day circulation, with wind speeds 60 times greater than the surface rotation, is located at the top of the cloud layer (65?70 km) in the middle atmosphere of the planet. This dramatic phenomenon is related to ...
The Venusian Y-Shaped Cloud Pattern Based on an Aerosol-Transport Model
Publisher: American Meteorological Society
Abstract: Venusian Y-shaped clouds have been observed by ultraviolet (UV) detectors. Recently, it has been demonstrated that the Y-shaped cloud pattern is maintained by the dynamical combination of an equatorial 4-day wave and a ...
Quasi-biennial Oscillation and Its Analog under the Assumption of Wave Self-Acceleration
Publisher: American Meteorological Society
Abstract: We have investigated numerically, using a slowly varying model, how the behavior of the quasi-biennial oscillation (QBO) in the equatorial stratosphere and its analog in the laboratory water tank are modified when wave ...
A Numerical Study of the Interaction between Stationary Rossby Waves and Eastward-Traveling Waves in the Southern Hemisphere Stratosphere
Publisher: American Meteorological Society
Abstract: Quasi-stationary Rossby waves with a wavenumber 1 component (wave 1) and eastward-traveling waves with a wavenumber 2 component (wave 2), whose period lies in 10?20 days, have been frequently observed during the late winter ...
Spectral Characteristics and Meridional Variations of Energy Transformations during the First and Second Special Observation Periods of FGGE
Publisher: American Meteorological Society
Abstract: Global features and meridional variations of spectral energy transformations are investigated for the first and second special observation periods (SOP-1 and SOP-2) of FGGE. The latitudinal distribution of the kinetic ...
Energetics Analysis of the Global Circulation during the Special Observation Periods of FGGE
Publisher: American Meteorological Society
Abstract: A global energetics analysis is presented for the FGGE SOP-1 and SOP-2 with ECMWF and GFDL data sets. Both global integral properties and spectral characteristics are examined. There is a large discrepancy between the ...
Impact of the Vertical Resolution of Analysis Data on the Estimates of Large-Scale Inertio-Gravity Energy
Publisher: American Meteorological Society
Abstract: his paper deals with the large-scale inertio-gravity (IG) wave energy in the operational ECMWF analyses in July 2007. Energy percentages of the IG waves obtained from the standard-pressure-level data are compared to those ...
Structure of the Atmosphere in Radiative–Convective Equilibrium
Publisher: American Meteorological Society
Abstract: To investigate water vapor transport in an atmosphere in radiative?convective equilibrium, a simplified dynamical convection model (DCM) was constructed that explicitly models moist convection and longwave radiation in a ...