Journal of the Atmospheric Sciences: Recent submissions
Now showing items 3661-3680 of 13215
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On the Dynamics of Concentric Eyewall Genesis: Space–Time Empirical Normal Modes Diagnosis
(American Meteorological Society, 2010)A novel statistical technique called space?time empirical normal mode (ST-ENM) is applied in a diagnostic study of the genesis of a secondary eyewall in a simulated hurricane using the nonhydrostatic, high-resolution ... -
Multiyear Statistics of 2D Shortwave Radiative Effects at Three ARM Sites
(American Meteorological Society, 2010)This study examines the importance of horizontal photon transport effects, which are not considered in the 1D calculations of solar radiative heating used by most atmospheric dynamical models. In particular, the paper ... -
On the Dynamics of Two-Dimensional Hurricane-like Concentric Rings Vortex Formation
(American Meteorological Society, 2010)Despite the fact that asymmetries in hurricanes (e.g., spiral rainbands, polygonal eyewalls, and mesovortices) have long been observed in radar and satellite imagery, many aspects of their dynamics remain unsolved, ... -
Quasigeostrophic Dynamics of a Finite-Thickness Tropopause
(American Meteorological Society, 2010)A model of tropopause dynamics is derived that is of intermediate complexity between the three-dimensional quasigeostrophic model and the surface quasigeostrophic (SQG) model. The model assumes that a sharp transition in ... -
Trapped Lee Wave Interference in the Presence of Surface Friction
(American Meteorological Society, 2011)rapped lee wave interference over double bell-shaped obstacles in the presence of surface friction is examined. Idealized high-resolution numerical experiments with the nonhydrostatic Coupled Ocean?Atmosphere Mesoscale ... -
Regime of Validity of Soundproof Atmospheric Flow Models
(American Meteorological Society, 2010)Ogura and Phillips derived the original anelastic model through systematic formal asymptotics using the flow Mach number as the expansion parameter. To arrive at a reduced model that would simultaneously represent internal ... -
An Airborne Profiling Radar Study of the Impact of Glaciogenic Cloud Seeding on Snowfall from Winter Orographic Clouds
(American Meteorological Society, 2010)Data from an airborne vertically pointing millimeter-wave Doppler radar are used to study the cloud microphysical effect of glaciogenic seeding of cold-season orographic clouds. Fixed flight tracks were flown downstream ... -
Mechanisms of Jet Formation on the Giant Planets
(American Meteorological Society, 2010)The giant planet atmospheres exhibit alternating prograde (eastward) and retrograde (westward) jets of different speeds and widths, with an equatorial jet that is prograde on Jupiter and Saturn and retrograde on Uranus and ... -
On the Dynamics of Two-Dimensional Hurricane-Like Vortex Symmetrization
(American Meteorological Society, 2010)Despite the fact that asymmetries in hurricanes, such as spiral rainbands, polygonal eyewalls, and mesovortices, have long been observed in radar and satellite imagery, many aspects of their origin, space?time structure, ... -
Analysis of the Meridional Energy Transport by Atmospheric Overturning Circulations
(American Meteorological Society, 2011)he atmospheric meridional overturning circulation is computed using the interim European Centre for Medium-Range Weather Forecasts Re-Analysis (ERA-Interim) data. Meridional mass transport streamfunctions are calculated ... -
Effect of Aerosol on the Susceptibility and Efficiency of Precipitation in Warm Trade Cumulus Clouds
(American Meteorological Society, 2010)Large-eddy simulations of warm, trade wind cumulus clouds are conducted for a range of aerosol conditions with a focus on precipitating clouds. Individual clouds are tracked over the course of their lifetimes. Precipitation ... -
An Ensemble Cumulus Convection Parameterization with Explicit Cloud Treatment
(American Meteorological Society, 2010)The paper describes a convection parameterization employing a new formulation of the quasi-equilibrium closure hypothesis of Arakawa and Schubert. The scheme models a full spectrum of different cumulus clouds and its ... -
The Position of the Midlatitude Storm Track and Eddy-Driven Westerlies in Aquaplanet AGCMs
(American Meteorological Society, 2010)The sensitivity of the midlatitude storm track and eddy-driven wind to the sea surface temperature (SST) boundary forcing is studied over a wide range of perturbations using both simple and comprehensive general circulation ... -
The Resonant Interaction of a Tropical Cyclone and a Tropopause Front in a Barotropic Model. Part I: Zonally Oriented Front
(American Meteorological Society, 2010)The interaction of a tropical cyclone and a zonally aligned tropopause front is investigated in an idealized framework. A nondivergent barotropic model is used in which the front is represented by a vorticity step, giving ... -
Reply
(American Meteorological Society, 2010) -
Direct Observations of Coherent Backscatter of Radar Waves in Precipitation
(American Meteorological Society, 2010)In previous work, it was argued that a source of radar coherent scatter occurs in the direction perpendicular to the direction of wave propagation because of the presence of grids of enhanced particle concentrations with ... -
The Resonant Interaction of a Tropical Cyclone and a Tropopause Front in a Barotropic Model. Part II: Frontal Waves
(American Meteorological Society, 2010)The influence of frontal waves on the interaction of a tropical cyclone and a tropopause front is investigated in an idealized framework. In a nondivergent barotropic model the front is represented by a vorticity step with ... -
Convectively Generated Potential Vorticity in Rainbands and Formation of the Secondary Eyewall in Hurricane Rita of 2005
(American Meteorological Society, 2010)yewall replacements in mature tropical cyclones usually cause intensity fluctuations. One reason for eyewall replacements remaining a forecasting challenge is the lack of understanding of how secondary eyewalls form. This ... -
Mechanisms of Along-Valley Winds and Heat Exchange over Mountainous Terrain
(American Meteorological Society, 2010)The physical mechanisms leading to the formation of diurnal along-valley winds are investigated over idealized three-dimensional topography. The topography used in this study consists of a valley with a horizontal floor ... -
CORRIGENDUM
(American Meteorological Society, 2010)