Journal of the Atmospheric Sciences: Recent submissions
Now showing items 2201-2220 of 13215
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On the Role of Planetary-Scale Waves in the Abrupt Seasonal Transition of the Northern Hemisphere General Circulation
(American Meteorological Society, 2013)he role of planetary-scale waves in the abrupt seasonal transition of the Northern Hemisphere (NH) general circulation is studied. In reanalysis data, the winter-to-summer transition involves the growth of planetary-scale ... -
On the Control of the Residual Circulation and Stratospheric Temperatures in the Arctic by Planetary Wave Coupling
(American Meteorological Society, 2013)t is well established that interannual variability of eddy (meridional) heat flux near the tropopause controls the variability of Arctic lower-stratospheric temperatures during spring via a modification of the strength of ... -
On the Deceiving Aspects of Mixing Diagrams of Deep Cumulus Convection
(American Meteorological Society, 2013)ixing processes in deep precipitating cumulus clouds are investigated by tracking Lagrangian particles in a large-eddy simulation. The trajectories of particles are reconstructed and the thermodynamic properties of cloud ... -
Aerosol Replenishment and Cloud Morphology: A VOCALS Example
(American Meteorological Society, 2013)he impact of aerosol replenishment in a stratocumulus-topped boundary layer (STBL) on cloud morphology and albedo is examined using a large-eddy simulation (LES) model in conjunction with a prey?predator-type dynamical ... -
CORRIGENDUM
(American Meteorological Society, 2013) -
Equilibration of an Atmosphere by Adiabatic Eddy Fluxes
(American Meteorological Society, 2013)major question for climate studies is to quantify the role of turbulent eddy fluxes in maintaining the observed atmospheric mean state. Both the equator-to-pole temperature gradient and the static stability of the extratropical ... -
Monin–Obukhov Similarity Functions for the Structure Parameters of Temperature and Humidity in the Unstable Surface Layer: Results from High-Resolution Large-Eddy Simulations
(American Meteorological Society, 2013)arge-eddy simulations (LESs) of free-convective to near-neutral boundary layers are used to investigate the surface-layer turbulence. The article focuses on the Monin?Obukhov similarity theory (MOST) relationships that ... -
The Influence of Submeso Processes on Stable Boundary Layer Similarity Relationships
(American Meteorological Society, 2013)revious observational studies in the stable boundary layer diverge appreciably on the values of dimensionless ratios between turbulence-related quantities and on their stability dependence. In the present study, the ... -
CORRIGENDUM
(American Meteorological Society, 2013) -
Symmetric and Antisymmetric Convection Signals in the Madden–Julian Oscillation. Part I: Basic Modes in Infrared Brightness Temperature
(American Meteorological Society, 2014)his work studies the significance of north?south asymmetry in convection associated with the 20?90-day Madden?Julian oscillation (MJO) propagating across the equatorial Indo-Pacific warm pool region. Satellite infrared ... -
The Transition to a Subtropical Jet Regime and Its Maintenance
(American Meteorological Society, 2013)n abrupt transition from a merged jet regime to a subtropical jet regime is analyzed using a two-layer modified quasigeostrophic (QG) spherical model. Unlike the common version of QG models, this model includes advection ... -
Causal Evidence that Rotational Moisture Advection is Critical to the Superparameterized Madden–Julian Oscillation
(American Meteorological Society, 2013)he authors investigate the hypothesis that horizontal moisture advection is critical to the eastward propagation of the Madden?Julian oscillation (MJO). Consistent diagnostic evidence has been found in recent MJO-permitting ... -
Imported and Storm-Generated Near-Ground Vertical Vorticity in a Simulated Supercell
(American Meteorological Society, 2014)he authors use a high-resolution supercell simulation to investigate the source of near-ground vertical vorticity by decomposing the vorticity vector into barotropic and nonbarotropic parts. This way, the roles of ambient ... -
Diurnal Wind Cycles Forcing Inertial Oscillations: A Latitude-Dependent Resonance Phenomenon
(American Meteorological Society, 2013)he latitudinal dependence of inertial oscillation (IO) in a diurnally evolving atmospheric boundary layer (ABL) is examined using a large-eddy simulation (LES). Previous studies that used LES were unable to simulate such ... -
Large-Eddy Simulation of Stratified Turbulence. Part I: A Vortex-Based Subgrid-Scale Model
(American Meteorological Society, 2014)he stretched-vortex subgrid-scale (SGS) model is extended to enable large-eddy simulation of buoyancy-stratified turbulence. Both stable and unstable stratifications are considered. The extended model retains the anisotropic ... -
Variability of Monthly Diurnal Cycle Composites of TOA Radiative Fluxes in the Tropics
(American Meteorological Society, 2013)arth system variability is generated by a number of different sources and time scales. Understanding sources of atmospheric variability is critical to reducing the uncertainty in climate models and to understanding the ... -
Low-Level ZDR Signatures in Supercell Forward Flanks: The Role of Size Sorting and Melting of Hail
(American Meteorological Society, 2013)he low levels of supercell forward flanks commonly exhibit distinct differential reflectivity (ZDR) signatures, including the low-ZDR hail signature and the high-ZDR ?arc.? The ZDR arc has been previously associated with ... -
Factors Controlling Rapid Stratocumulus Cloud Thinning
(American Meteorological Society, 2013)he relationship between the inversion stability and the liquid water path (LWP) tendency of a vertically well-mixed, adiabatic stratocumulus cloud layer is investigated in this study through the analysis of the budget ... -
A Large-Eddy Simulation Study of Scalar Dissimilarity in the Convective Atmospheric Boundary Layer
(American Meteorological Society, 2013)numerical study of the effect of entrainment fluxes at the top of the atmospheric boundary layer (ABL) on dissimilarity between scalars within the mixed and surface layers is conducted. Simulation results clearly show that ... -
Diurnal Radiation Cycle Impact on the Pregenesis Environment of Hurricane Karl (2010)
(American Meteorological Society, 2013)hrough convection-permitting ensemble and sensitivity experiments, this study examines the impact of the diurnal radiation cycle on the pregenesis environment of Hurricane Karl (2010). It is found that the pregenesis ...