Journal of the Atmospheric Sciences: Recent submissions
Now showing items 2701-2720 of 13215
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How Physical Parameterizations Can Modulate Internal Variability in a Regional Climate Model
(American Meteorological Society, 2011)he authors analyze to what extent the internal variability simulated by a regional climate model is sensitive to its physical parameterizations. The influence of two convection schemes is quantified over southern Africa, ... -
Effects of Atmospheric Absorption of Incoming Radiation on the Radiation Limit of the Troposphere
(American Meteorological Society, 2011)he limit of the planetary radiation (longwave radiation) of a planet with oceans on its surface is determined by various mechanisms called ?radiation limits,? which can be classified as the Komabayashi?Ingersoll limit and ... -
Thermodynamic Consistency of a Pseudoincompressible Approximation for General Equations of State
(American Meteorological Society, 2011)n soundproof model equations for geophysical fluid dynamics, the momentum and mechanical energy budgets decouple from the thermodynamics for adiabatic flows. In applying such models to nonadiabatic flows of fluids with ... -
The Relationship between Tropical Warm Pool Precipitation, Sea Surface Temperature, and Large-Scale Vertical Motion in IPCC AR4 Models
(American Meteorological Society, 2011)regime sorting analysis is used to identify Caribbean and western Pacific precipitation, sea surface temperature, and large-scale vertical circulation relationships and biases within coupled and uncoupled Intergovernmental ... -
On the Height of the Warm Core in Tropical Cyclones
(American Meteorological Society, 2011)he warm-core structure of tropical cyclones is examined in idealized simulations using the Weather Research and Forecasting (WRF) Model. The maximum perturbation temperature in a control simulation occurs in the midtroposphere ... -
Gravity Wave Characteristics in the Southern Hemisphere Revealed by a High-Resolution Middle-Atmosphere General Circulation Model
(American Meteorological Society, 2011)ravity wave characteristics in the middle- to high-latitude Southern Hemisphere are analyzed using simulation data over 3 yr from a high-resolution middle-atmosphere general circulation model without using any gravity wave ... -
Large-Scale Rossby Normal Modes during Some Recent Northern Hemisphere Winters
(American Meteorological Society, 2011)arge-scale Rossby normal modes are studied for the Northern Hemisphere winters of 2005, 2006, 2008, and 2009 using global observational meteorological analyses spanning the 0?92-km altitude range. Spectral analysis of ... -
Comments on “A Density Current Parameterization Coupled with Emanuel’s Convection Scheme. Part I: The Models”
(American Meteorological Society, 2011) -
Large-Scale Dynamical Response to Subgrid-Scale Organization Provided by Cellular Automata
(American Meteorological Society, 2011)ecause of the limited resolution of numerical weather prediction (NWP) models, subgrid-scale physical processes are parameterized and represented by gridbox means. However, some physical processes are better represented ... -
Secondary Instabilities in Breaking Inertia–Gravity Waves
(American Meteorological Society, 2011)he three-dimensionalization of turbulence in the breaking of nearly vertically propagating inertia?gravity waves is investigated numerically using singular vector analysis applied to the Boussinesq equations linearized ... -
Short-Time-Scale Processes in a Mature Hurricane as a Response to Sea Surface Fluctuations
(American Meteorological Society, 2011)o clarify the effect of fluctuations in surface stress and heat fluxes on the intensity of a mature-state hurricane, a sensitivity analysis is performed by using a cloud-permitting nonhydrostatic axisymmetric adjoint model. ... -
Self-Stratification of Tropical Cyclone Outflow. Part I: Implications for Storm Structure
(American Meteorological Society, 2011)xtant theoretical work on the steady-state structure and intensity of idealized axisymmetric tropical cyclones relies on the assumption that isentropic surfaces in the storm outflow match those of the unperturbed environment ... -
Diagnosis of the Warm Rain Process in Cloud-Resolving Models Using Joint CloudSat and MODIS Observations
(American Meteorological Society, 2011)his study examines the warm rain formation process in global and regional cloud-resolving models. Methodologies developed to analyze CloudSat and Moderate Resolution Imaging Spectroradiometer (MODIS) satellite observations ... -
Isentropic Slopes, Downgradient Eddy Fluxes, and the Extratropical Atmospheric Circulation Response to Tropical Tropospheric Heating
(American Meteorological Society, 2011)limate change experiments run on Intergovernmental Panel on Climate Change (IPCC)?class numerical models consistently suggest that increasing concentrations of greenhouse gases will lead to a poleward shift of the midlatitude ... -
On Momentum Transport and Dissipative Heating during Hurricane Landfalls
(American Meteorological Society, 2011)omentum transport and dissipative heating are investigated using the high-resolution (10 Hz) wind data collected by Florida Coastal Monitoring Program portable weather stations in the surface layer of three landfalling ... -
An Extension of Smith’s Linear Theory of Orographic Precipitation: Introduction of Vertical Layers
(American Meteorological Society, 2011)his paper proposes an extension of a linear theory of orographic precipitation (OP). In the original theory, cloud water is produced by forced lifting over mountains, moderated by airflow dynamics. Controlled by a time ... -
The Effect of Mesh Resolution on Convective Boundary Layer Statistics and Structures Generated by Large-Eddy Simulation
(American Meteorological Society, 2011)massively parallel large-eddy simulation (LES) code for planetary boundary layers (PBLs) that utilizes pseudospectral differencing in horizontal planes and solves an elliptic pressure equation is described. As an application, ... -
Convective Generation of Equatorial Superrotation in Planetary Atmospheres
(American Meteorological Society, 2011)n rapidly rotating planetary atmospheres that are heated from below, equatorial superrotation can occur through convective generation of equatorial Rossby waves. If the heating from below is sufficiently strong that ... -
The Impact of Dry Midlevel Air on Hurricane Intensity in Idealized Simulations with No Mean Flow
(American Meteorological Society, 2011)his study examines the potential negative influences of dry midlevel air on the development of tropical cyclones (specifically, its role in enhancing cold downdraft activity and suppressing storm development). The Weather ... -
Boundary Layer Turbulence and Orographic Precipitation Growth in Cold Clouds: Evidence from Profiling Airborne Radar Data
(American Meteorological Society, 2011)irborne vertically pointing Doppler radar data collected in 10 winter storms over the Medicine Bow Range in Wyoming are used to examine the importance of boundary layer (BL) turbulence for orographic precipitation growth. ...