Journal of the Atmospheric Sciences: Recent submissions
Now showing items 3801-3820 of 13215
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The Wintertime Wind Stress Curl Field in the North Atlantic and Its Relation to Atmospheric Teleconnection Patterns
(American Meteorological Society, 2009)Adopting a rotated empirical orthogonal function (REOF) analysis and a maximum covariance analysis (MCA), characteristics of the wintertime wind stress curl (WSC) anomaly field in the North Atlantic are investigated. In ... -
Genesis of Pre–Hurricane Felix (2007). Part I: The Role of the Easterly Wave Critical Layer
(American Meteorological Society, 2010)The formation of pre?Hurricane Felix (2007) in a tropical easterly wave is examined in a two-part study using the Weather Research and Forecasting (WRF) model with a high-resolution nested grid configuration that permits ... -
Comments on “A Comparison of Tropical and Midlatitude Thunderstorm Evolution in Response to Wind Shear”
(American Meteorological Society, 2010) -
Transport and Mixing in the Extratropical Tropopause Region in a High-Vertical-Resolution GCM. Part II: Relative Importance of Large-Scale and Small-Scale Dynamics
(American Meteorological Society, 2009)The relative roles of atmospheric motions on various scales, from mesoscale to planetary scale, in transport and mixing in the extratropical tropopause region are investigated using a high-vertical-resolution general ... -
Microphysical Scaling Relations in a Kinematic Model of Isolated Shallow Cumulus Clouds
(American Meteorological Society, 2009)The rain formation in shallow cumulus clouds by condensational growth and collision?coalescence of liquid drops is revisited with the aim of understanding the controls on precipitation efficiency for idealized cloud drafts. ... -
A Major Stratospheric Sudden Warming Event in January 2009
(American Meteorological Society, 2009)The major stratospheric sudden warming (SSW) event of January 2009 is analyzed using the Japan Meteorological Agency (JMA) Climate Data Assimilation System (JCDAS). This SSW event is characterized by the extraordinary ... -
Circulation Sensitivity to Heating in a Simple Model of Baroclinic Turbulence
(American Meteorological Society, 2009)This paper examines the sensitivity of the circulation of an idealized primitive equation two-level model on the form and strength of the heating, aiming to understand the qualitatively different sensitivity of the isentropic ... -
The Climatology of the Middle Atmosphere in a Vertically Extended Version of the Met Office’s Climate Model. Part I: Mean State
(American Meteorological Society, 2010)The climatology of a stratosphere-resolving version of the Met Office?s climate model is studied and validated against ECMWF reanalysis data. Ensemble integrations are carried out at two different horizontal resolutions. ... -
A Systematic Error in Plane-Parallel Radiative Transfer Calculations
(American Meteorological Society, 2010)Systematic errors in plane-parallel radiative transfer calculations are examined in the context of limb radiance. Calculation of the multiple-scattering component of limb radiance using plane-parallel geometry can lead to ... -
Global Circulation in an Axially Symmetric Shallow-Water Model, Forced by Off-Equatorial Differential Heating
(American Meteorological Society, 2010)An axially symmetric inviscid shallow-water model (SWM) on the rotating Earth forced by off-equatorial steady differential heating is employed to characterize the main features of the upper branch of an ideal Hadley ... -
Nature versus Nurture in Shallow Convection
(American Meteorological Society, 2009)Tracers are used in a large-eddy simulation of shallow convection to show that stochastic entrainment (and not cloud-base properties) determines the fate of convecting parcels. The tracers are used to diagnose the correlations ... -
On the Origin of Planetary-Scale Extratropical Winter Circulation Regimes
(American Meteorological Society, 2009)Sectorial and planetary-scale winter circulation regimes are studied and the relationship between them is investigated in order to find how much the simultaneous occurrence of sectorial regimes contributes to the occurrence ... -
CORRIGENDUM
(American Meteorological Society, 2009) -
Subpolar High Anomaly Preconditioning Precipitation over South America
(American Meteorological Society, 2010)The mechanisms associated with the intraseasonal variability of precipitation over South America during the spring season are investigated with emphasis on the influence of a quasi-stationary anomalous circulation over the ... -
CORRIGENDUM
(American Meteorological Society, 2009) -
Regime Transitions of Steady and Time-Dependent Hadley Circulations: Comparison of Axisymmetric and Eddy-Permitting Simulations
(American Meteorological Society, 2009)Steady-state and time-dependent Hadley circulations are investigated with an idealized dry GCM, in which thermal forcing is represented as relaxation of temperatures toward a radiative-equilibrium state. The latitude ?0 ... -
A General Theorem on Angular-Momentum Changes due to Potential Vorticity Mixing and on Potential-Energy Changes due to Buoyancy Mixing
(American Meteorological Society, 2009)An initial zonally symmetric quasigeostrophic potential vorticity (PV) distribution qi(y) is subjected to complete or partial mixing within some finite zone |y| < L, where y is latitude. The change in M, the total absolute ... -
An Attempt to Derive the ε Equation from a Two-Point Closure
(American Meteorological Society, 2009)The goal of this paper is to derive the equation for the turbulence dissipation rate ε for a shear-driven flow. In 1961, Davydov used a one-point closure model to derive the ε equation from first principles but the final ... -
Effects of Surface Albedo on Cloud and Radiation Processes in Cloud-Resolving Model Simulations
(American Meteorological Society, 2009)The relationship among the surface albedo, cloud properties, and radiative fluxes is investigated for the first time using a year-long cloud-resolving model (CRM) simulation with the prescribed evolving surface albedo. In ... -
On the Approximation of Local and Linear Radiative Damping in the Middle Atmosphere
(American Meteorological Society, 2009)The validity of approximating radiative heating rates in the middle atmosphere by a local linear relaxation to a reference temperature state (i.e., ?Newtonian cooling?) is investigated. Using radiative heating rate and ...