Journal of the Atmospheric Sciences: Recent submissions
Now showing items 1441-1460 of 13215
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Are Sudden Stratospheric Warmings Generic? Insights from an Idealized GCM
(American Meteorological Society, 2016)his work examines the life cycle of sudden stratospheric warmings (SSWs) from composites of a large number of events. The events are sampled from idealized general circulation model (GCM) integrations and form a database ... -
Tropical Waves and the Quasi-Biennial Oscillation in a 7-km Global Climate Simulation
(American Meteorological Society, 2016)his study investigates tropical waves and their role in driving a quasi-biennial oscillation (QBO)-like signal in stratospheric winds in a global 7-km-horizontal-resolution atmospheric general circulation model. The Nature ... -
Idealized Large-Eddy and Convection-Resolving Simulations of Moist Convection over Mountainous Terrain
(American Meteorological Society, 2016)n summertime fair-weather days, thermally driven wind systems play an important role in determining the initiation of convection and the occurrence of localized precipitation episodes over mountainous terrain. This study ... -
Air–Sea Interactions in Light of New Understanding of Air–Land Interactions
(American Meteorological Society, 2016)ir?sea interactions are investigated using the data from the Coupled Boundary Layers Air?Sea Transfer experiment under low wind (CBLAST-Low) and the Surface Wave Dynamics Experiment (SWADE) over sea and compared with ... -
A New Theory for Downslope Windstorms and Trapped Mountain Waves
(American Meteorological Society, 2016)inear mountain gravity waves forced by a nonlinear surface boundary condition are derived for a background wind that is null at the surface and increases smoothly to reach a constant value aloft and for a constant buoyancy ... -
Idealized Numerical Modeling of the Diurnal Cycle of Tropical Cyclones
(American Meteorological Society, 2016)numerical experiment is performed to evaluate the role of the daily cycle of radiation on axisymmetric hurricane structure. Although a diurnal response in high cloudiness has been well documented previously, the link to ... -
Strengthening of the Tropopause Inversion Layer during the 2009 Sudden Stratospheric Warming: A MERRA-2 Study
(American Meteorological Society, 2016)he behavior of the tropopause inversion layer (TIL) during the 2009 sudden stratospheric warming (SSW) is analyzed using NASA?s Modern-Era Retrospective Analysis for Research and Applications, version 2 (MERRA-2), and ... -
The Linear Response Function of an Idealized Atmosphere. Part I: Construction Using Green’s Functions and Applications
(American Meteorological Society, 2016)linear response function (LRF) determines the mean response of a nonlinear climate system to weak imposed forcings, and an eddy flux matrix (EFM) determines the eddy momentum and heat flux responses to mean-flow changes. ... -
Turbulent Winds and Temperature Fronts in Large-Eddy Simulations of the Stable Atmospheric Boundary Layer
(American Meteorological Society, 2016)he nighttime high-latitude stably stratified atmospheric boundary layer (SBL) is computationally simulated using high?Reynolds number large-eddy simulation on meshes varying from 2003 to 10243 over 9 physical hours for ... -
The Impact of Gradient Wind Imbalance on Tropical Cyclone Intensification within Ooyama’s Three-Layer Model
(American Meteorological Society, 2016)his paper addresses the validity of the gradient wind balance approximation during the intensification phase of a tropical cyclone in Ooyama?s three-layer model. For this purpose, the sensitivity to various model modifications ... -
Reply to “Comments on ‘MSE minus CAPE is the True Conserved Variable for an Adiabatically Lifted Parcel’”
(American Meteorological Society, 2016)standard convention in moist thermodynamics, adopted by D. M. Romps and others, is to set the specific energy and entropy of dry air and liquid water to zero at the triple-point temperature and pressure. P. Marquet claims ... -
The Role of Surface Drag in Tornadogenesis within an Idealized Supercell Simulation
(American Meteorological Society, 2016)o investigate the effect of surface drag on tornadogenesis, a pair of idealized simulations is conducted with 50-m horizontal grid spacing. In the first experiment (full-wind drag case), surface drag is applied to the full ... -
An Assessment of the Flux Profile Method for Determining Air–Sea Momentum and Enthalpy Fluxes from Dropsonde Data in Tropical Cyclones
(American Meteorological Society, 2016)n analysis of the reliability of using dropsonde profile data to compute surface flux coefficients of momentum and heat is performed. Monin?Obukhov (MO) similarity theory forms the basis for the flux profile method, where ... -
Equilibration of a Baroclinic Planetary Atmosphere toward the Limit of Vanishing Bottom Friction
(American Meteorological Society, 2016)his paper discusses whether and how a baroclinic atmosphere can equilibrate with very small bottom friction in a dry primitive equation general circulation model. The model is forced by a Newtonian relaxation of temperature ... -
Case Study of Potential Vorticity Tower in Three Explosive Cyclones over Eastern Asia
(American Meteorological Society, 2017)hree cases of explosively developing extratropical cyclones over eastern Asia are analyzed using ERA-Interim data. The morphological characteristics of the upper-tropospheric potential vorticity (PV) were examined. The ... -
Wave and Jet Maintenance in Different Flow Regimes
(American Meteorological Society, 2016)he wave spectrum and zonal-mean-flow maintenance in different flow regimes of the jet stream are studied using a two-layer modified quasigeostrophic (QG) model. As the wave energy is increased by varying the model parameters, ... -
Updraft Buoyancy within and Moistening by Cumulonimbi prior to MJO Convective Onset in a Regional Model
(American Meteorological Society, 2016)rocesses responsible for widespread development of moderately deep cumulonimbi during a transition period before onset of two large-scale convective events associated with the Madden?Julian oscillation in late 2011 are ... -
Clausius–Clapeyron Scaling of CAPE from Analytical Solutions to RCE
(American Meteorological Society, 2016)y deriving analytical solutions to radiative?convective equilibrium (RCE), it is shown mathematically that convective available potential energy (CAPE) exhibits Clausius?Clapeyron (CC) scaling over a wide range of surface ... -
A Doubly Blended Model for Multiscale Atmospheric Dynamics
(American Meteorological Society, 2016)he compressible flow equations for a moist, multicomponent fluid constitute the most comprehensive description of atmospheric dynamics used in meteorological practice. Yet, compressibility effects are often considered weak ... -
The Warm-Core Structure of Hurricane Earl (2010)
(American Meteorological Society, 2016)he warm-core structure of Hurricane Earl (2010) is examined on four different days, spanning periods of both rapid intensification (RI) and weakening, using high-altitude dropsondes from both the inner core and the ...