Journal of the Atmospheric Sciences: Recent submissions
Now showing items 4681-4700 of 13215
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Sound Propagation in the Nocturnal Boundary Layer
(American Meteorological Society, 2003)An experimental study of sound propagation near the ground in stable, nighttime conditions was performed in conjunction with the Cooperative Atmosphere?Surface Exchange Study-1999 (CASES-99). Low-frequency sound transmissions ... -
Reply
(American Meteorological Society, 2003) -
Horizontal Variability of 2-m Temperature at Night during CASES-97
(American Meteorological Society, 2003)Surface-station, radiosonde, and Doppler minisodar data from the Cooperative Atmosphere?Surface Exchange Study-1997 (CASES-97) field project, collected in a 60-km-wide array in the lower Walnut River watershed (terrain ... -
Cooperative Atmosphere–Surface Exchange Study-1999
(American Meteorological Society, 2003) -
Comment on “Linear and Nonlinear Propagation of Supercell Storms”
(American Meteorological Society, 2003) -
Reply
(American Meteorological Society, 2003) -
Comments on “Remarks on Quasi-Equilibrium Theory”
(American Meteorological Society, 2003) -
Large Eddy Simulation of Thermally Induced Oscillations in the Convective Boundary Layer
(American Meteorological Society, 2003)Mesoscale circulations induced by differential boundary layer heating due to surface inhomogeneities on scales of 5 km and more can significantly change the average properties and the structure of the convective boundary ... -
On the Magnitude and Variability of Subgrid-Scale Eddy-Diffusion Coefficients in the Atmospheric Surface Layer
(American Meteorological Society, 2003)Eddy-viscosity closures for large eddy simulations (LES) of atmospheric boundary layer dynamics include a parameter (Smagorinsky constant cs), which depends upon physical parameters, such as distance to the ground, atmospheric ... -
A Multiple Mass-Flux Parameterization for the Surface-Generated Convection. Part I: Dry Plumes
(American Meteorological Society, 2003)The present study introduces a parameterization for the mixing in the surface-generated free convection regime (including dry and moist convection cases). The parameterization explicitly represents the plumes that drive ... -
Hurricane Superintensity
(American Meteorological Society, 2003)High spatial and temporal resolution simulations using the Rotunno and Emanuel axisymmetric, cloud-resolving, hurricane model are found to greatly exceed Emanuel?s energetically based upper bound for maximum potential ... -
Quasi-Decadal Variability of the Tropical Lower Stratosphere: The Role of Extratropical Wave Forcing
(American Meteorological Society, 2003)Column ozone and satellite-derived temperature records with lengths >20 yr are consistent with the existence of a long-term, quasi-decadal oscillation (QDO) of the tropical lower stratosphere. Using a one-dimensional model ... -
Mesoscale Nonhydrostatic and Hydrostatic Pressure Gradient Forces—Theory
(American Meteorological Society, 2003)A theory is presented for the evaluation of the different terms of the pressure gradient force, when mesoscale flow is driven by a sensible heat source in the planetary boundary layer (PBL), or by an elevated confined heat ... -
Model Error and Predictability over Different Timescales in the Lorenz '96 Systems
(American Meteorological Society, 2003)Prediction problems have been described by Lorenz as falling into two categories. Problems that depend on the initial condition, such as short- to medium-range weather forecasting, are described as ?predictions of the first ... -
A Generalized Form of Lait's Modified Potential Vorticity
(American Meteorological Society, 2003)Ertel's potential vorticity P is in widespread use as a diagnostic of dynamical processes in the stratosphere. For a variety of applications, however, the exponential increase of P with altitude is problematic. For this ... -
Dynamics of Model Error: Some Generic Features
(American Meteorological Society, 2003)A systematic formulation of model error is developed accounting for both its dynamical and probabilistic aspects. Some generic features, largely independent of the particular model under consideration, are brought out in ... -
Low-Frequency Variability in a Baroclinic β Channel with Land–Sea Contrast
(American Meteorological Society, 2003)Atmospheric low-frequency variability (LFV) is studied in a two-layer quasigeostrophic model. The model geometry is a periodic ? channel with flat bottom and zonally inhomogeneous thermal forcing. As a result of the idealized ... -
On an Improved Model for the Turbulent PBL
(American Meteorological Society, 2003)Cheng, Canuto, and Howard have presented a second-moment closure PBL model that appears to overcome some of the shortcomings of the existing Mellor and Yamada?type closure models. This note demonstrates that with a slight ... -
Asymmetric Structures in a Simulated Landfalling Hurricane
(American Meteorological Society, 2003)Highly asymmetric structures in a landfalling hurricane can lead to the formation of heavy rains, wind gusts, and tornados at prefered locations relative to the center of the hurricane. In this study, the development of ... -
The Intraseasonal Oscillation and the Energetics of Summertime Tropical Western North Pacific Synoptic-Scale Disturbances
(American Meteorological Society, 2003)The tropical intraseasonal oscillation (ISO) causes variations in the large-scale flow over the western North Pacific during June?August that strongly impact the energetics of tropical depression (TD)-type disturbances. ...