Journal of the Atmospheric Sciences: Recent submissions
Now showing items 2481-2500 of 13215
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The Lower-Stratospheric Response to 11-Yr Solar Forcing: Coupling to the Troposphere–Ocean Response
(American Meteorological Society, 2012)he origin of the tropical lower-stratospheric response to 11-yr solar forcing and its possible coupling to a troposphere?ocean response is investigated using multiple linear regression (MLR) analyses of stratospheric ozone ... -
A Simple Kinematic Source of Skewness in Atmospheric Flow Fields
(American Meteorological Society, 2011)eopotential height fields exhibit a well-known pattern of skewness, with distributions that are positively skewed on the poleward side of the midlatitude jets/storm tracks and negatively skewed on the equatorward side. ... -
Zonal Jets as Meridional Transport Barriers in the Subtropical and Polar Lower Stratosphere
(American Meteorological Society, 2011)Applications of recent results from dynamical systems theory to the study of transport and mixing in incompressible two-dimensional flows lead to the expectation that, independent of the background potential vorticity (PV) ... -
The Theoretician’s Clouds—Heavier or Lighter than Air? On Densities in Atmospheric Thermodynamics
(American Meteorological Society, 2011)hreefold densities may be introduced into atmospheric thermodynamics. For rainless clouds the general indirect or implicit conclusion is that they are denser than moist air under the same circumstances, although in a classic ... -
Potential Vorticity of the Madden–Julian Oscillation
(American Meteorological Society, 2011)his study explores the extent to which the dynamical structure of the Madden?Julian oscillation (MJO), its evolution, and its connection to diabatic heating can be described in terms of potential vorticity (PV). The signature ... -
Cooling of Entrained Parcels in a Large-Eddy Simulation
(American Meteorological Society, 2011)he relative importance, for cloud-top entrainment, of the cooling rates due to longwave radiation, evaporation, and mixing was assessed through analysis of the results produced by a Lagrangian parcel-tracking model (LPTM) ... -
Stratospheric Sudden Warmings as Self-Tuning Resonances. Part II: Vortex Displacement Events
(American Meteorological Society, 2011)ortex displacement stratospheric sudden warmings (SSWs) are studied in an idealized model of a quasigeostrophic columnar vortex in an anelastic atmosphere. Motivated by the fact that observed events occur at a fixed ... -
Turbulence Regimes and Turbulence Intermittency in the Stable Boundary Layer during CASES-99
(American Meteorological Society, 2011)n investigation of nocturnal intermittent turbulence during the Cooperative Atmosphere?Surface Exchange Study in 1999 (CASES-99) revealed three turbulence regimes at each observation height: 1) regime 1, a weak turbulence ... -
Hadley Cell Dynamics in a Virtually Dry Snowball Earth Atmosphere
(American Meteorological Society, 2011)he Hadley cell of a virtually dry snowball Earth atmosphere under equinox insolation is studied in a comprehensive atmospheric general circulation model. In contrast to the Hadley cell of modern Earth, momentum transport ... -
Baroclinic Adjustment in an Atmosphere–Ocean Thermally Coupled Model: The Role of the Boundary Layer Processes
(American Meteorological Society, 2011)aroclinic eddy equilibration and the roles of different boundary layer processes in limiting the baroclinic adjustment are studied using an atmosphere?ocean thermally coupled model. Boundary layer processes not only affect ... -
Estimating the Orientation and Spacing of Midlatitude Linear Convective Boundary Layer Features: Cloud Streets
(American Meteorological Society, 2011)inear features in a clear convective boundary layer (CBL) over the North Atlantic Ocean were studied during a weak cold air outbreak using a down-looking airborne lidar. Sequential lidar profiles were placed together and ... -
CORRIGENDUM
(American Meteorological Society, 2011) -
The Mechanical Energies of the Global Atmosphere in El Niño and La Niña Years
(American Meteorological Society, 2011)wo meteorological reanalysis datasets are analyzed to determine the mechanical energies of the global atmosphere in the El Niño and La Niña years. The general consistency of the mean energy components between the two ... -
A Numerical Study of Urban Aerosol Impacts on Clouds and Precipitation
(American Meteorological Society, 2011)he impacts of urban aerosols on clouds and precipitation are investigated using a spectral (bin) microphysics cloud model. For this purpose, extensive numerical experiments with various aerosol concentrations are performed ... -
Characteristics of Correlation Statistics between Droplet Radius and Optical Thickness of Warm Clouds Simulated by a Three-Dimensional Regional-Scale Spectral Bin Microphysics Cloud Model
(American Meteorological Society, 2011)hree-dimensional downscaling simulations using a spectral bin microphysics (SBM) model were conducted to investigate the effects of aerosol amount and dynamical stabilities of the atmosphere on the correlation statistics ... -
An Extended Model for the Potential Intensity of Tropical Cyclones
(American Meteorological Society, 2011)manuel?s theory of hurricane potential intensity (E-PI) makes use of the assumption that slantwise convective instability vanishes in a steady-state vortex of a tropical cyclone. In the framework of an extended mathematical ... -
Anatomy of Synoptic Eddy–NAO Interaction through Eddy Structure Decomposition
(American Meteorological Society, 2012)method of eddy structure decomposition is proposed to detect how low-frequency flow associated with the North Atlantic Oscillation (NAO) organizes systematically synoptic eddy (SE) activity to generate in-phase and upstream ... -
The Relative Humidity in an Isentropic Advection–Condensation Model: Limited Poleward Influence and Properties of Subtropical Minima
(American Meteorological Society, 2011)n idealized model of advection and condensation of water vapor is considered as a representation of processes influencing the humidity distribution along isentropic surfaces in the free troposphere. Results are presented ... -
A Diagnostic for Evaluating the Representation of Turbulence in Atmospheric Models at the Kilometric Scale
(American Meteorological Society, 2011)urbulence is well represented by atmospheric models at very fine grid sizes, from 10 to 100 m, for which turbulent movements are mainly resolved, and by atmospheric models with grid sizes greater than 2 km, for which those ... -
Stratospheric Sudden Warmings as Self-Tuning Resonances. Part I: Vortex Splitting Events
(American Meteorological Society, 2011)he fundamental dynamics of ?vortex splitting? stratospheric sudden warmings (SSWs), which are known to be predominantly barotropic in nature, are reexamined using an idealized single-layer f-plane model of the polar vortex. ...