Journal of the Atmospheric Sciences: Recent submissions
Now showing items 2961-2980 of 13215
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Representing Convective Organization in Prediction Models by a Hybrid Strategy
(American Meteorological Society, 2006)The mesoscale organization of precipitating convection is highly relevant to next-generation global numerical weather prediction models, which will have an intermediate horizontal resolution (grid spacing about 10 km). A ... -
High-Resolution Simulation of Shallow-to-Deep Convection Transition over Land
(American Meteorological Society, 2006)Results are presented from a high-resolution three-dimensional simulation of shallow-to-deep convection transition based on idealization of observations made during the Large-Scale Biosphere?Atmosphere (LBA) experiment in ... -
Opposing Effects of Reflective and Nonreflective Planetary Wave Breaking on the NAO
(American Meteorological Society, 2006)Planetary wave breaking (PWB) over the subtropical North Atlantic is observed over 45 winters (December 1958?March 2003) using NCEP?NCAR reanalysis data. PWB is manifested in the rapid, large-scale and irreversible overturning ... -
The Role of the Ocean in the Seasonal Cycle of the Hadley Circulation
(American Meteorological Society, 2006)The influence of ocean heat transport on the seasonal cycle of the Hadley circulation is investigated using idealized experiments with a climate model. It is found that ocean heat transport plays a fundamental role in ... -
A Multimoment Bulk Microphysics Parameterization. Part III: Control Simulation of a Hailstorm
(American Meteorological Society, 2006)With continuous increase in the resolution of operational numerical weather prediction models, grid-scale saturation schemes that model cloud microphysics are becoming increasingly important. In Parts I and II of this ... -
Direct Numerical Simulation of the Plumb–McEwan Laboratory Analog of the QBO
(American Meteorological Society, 2006)The laboratory experiment of Plumb and McEwan demonstrates the principal mechanism of periodically reversing winds observed in the stratosphere?the quasi-biennial oscillation (QBO). However, despite numerous studies, some ... -
A Multimoment Bulk Microphysics Parameterization. Part IV: Sensitivity Experiments
(American Meteorological Society, 2006)This is the fourth in a series of papers exploring the effects of the number of predicted moments in bulk microphysics schemes. In Part III, the three-moment version of a new multimoment scheme was used to simulate a severe ... -
Simulation of Inertia–Gravity Waves in a Poleward-Breaking Rossby Wave
(American Meteorological Society, 2006)Poleward-breaking Rossby waves often induce an upper-level jet streak over northern Europe. Dominant inertia?gravity wave packets are observed downstream of this jet. The physical processes of their generation and propagation, ... -
A Cascade-Type Global Energy Conversion Diagram Based on Wave–Mean Flow Interactions
(American Meteorological Society, 2006)A cascade-type energy conversion diagram is proposed for the purpose of diagnosing the atmospheric general circulation based on wave?mean flow interactions. Mass-weighted isentropic zonal means facilitate the expression ... -
Accelerated Iterative Method for Solving Steady Problems of Linearized Atmospheric Models
(American Meteorological Society, 2006)A new approach, referred to as the accelerated iterative method (AIM), is developed for obtaining steady atmospheric responses with a zonally varying basic state. The linear dynamical operator is divided into two parts, ... -
Advanced Doubling–Adding Method for Radiative Transfer in Planetary Atmospheres
(American Meteorological Society, 2006)The doubling?adding method (DA) is one of the most accurate tools for detailed multiple-scattering calculations. The principle of the method goes back to the nineteenth century in a problem dealing with reflection and ... -
Dynamics of Model Error: The Role of the Boundary Conditions
(American Meteorological Society, 2007)The different modes of the early stages of the response of a forecasting model to a small error in the boundary conditions are analyzed. A general formulation of the problem based on the use of Green?s functions is developed ... -
In Situ Observations of the Microphysical Properties of Wave, Cirrus, and Anvil Clouds. Part II: Cirrus Clouds
(American Meteorological Society, 2006)A Learjet research aircraft was used to collect microphysical data, including cloud particle imager (CPI) measurements of ice particle size and shape, in 22 midlatitude cirrus clouds. The dataset was collected while the ... -
The Role of Stationary Waves in the Maintenance of the Northern Annular Mode as Deduced from Model Experiments
(American Meteorological Society, 2006)The influence of stationary waves on the maintenance of the tropospheric annular mode (AM) is examined in a simple global circulation model with perpetual January conditions. The presented model experiments vary in the ... -
A Diagnostic Study of Waves on the Tropopause
(American Meteorological Society, 2006)The spatial structure and phase velocity of tropopause disturbances localized around the subpolar jet in the Southern Hemisphere are investigated using 6-hourly European Centre for Medium-Range Weather Forecasts reanalysis ... -
Lower-Stratospheric and Upper-Tropospheric Disturbances Observed by Radiosondes over Thailand during January 2000
(American Meteorological Society, 2006)Lower-stratospheric and upper-tropospheric disturbances over Thailand during 12?21 January 2000 were studied using the Global Energy and Water Cycle Experiment (GEWEX) Asian Monsoon Experiment-Tropics (GAME-T) intensive ... -
In Situ Observations of the Microphysical Properties of Wave, Cirrus, and Anvil Clouds. Part I: Wave Clouds
(American Meteorological Society, 2006)The microphysical properties of wave clouds based on data collected during 17 missions flown by a Learjet research aircraft are presented and discussed. This extensive dataset expands upon previous aircraft studies of wave ... -
Further Analysis of Lorenz’s Maximum Simplification Equations
(American Meteorological Society, 2006)The goal of this paper is to provide a complete picture of the long-term behavior of Lorenz?s maximum simplification equations along with the corresponding meteorological interpretation for all initial conditions and all ... -
Internal Variability of the Winter Stratosphere. Part I: Time-Independent Forcing
(American Meteorological Society, 2006)This paper examines the nature and robustness of internal stratospheric variability, namely the variability resulting from the internal dynamics of the stratosphere itself, as opposed to that forced by external sources ... -
Are the North Atlantic Oscillation and the Northern Annular Mode Distinguishable?
(American Meteorological Society, 2006)This study addresses the question of whether persistent events of the North Atlantic Oscillation (NAO) and the Northern Annular Mode (NAM) teleconnection patterns are distinguishable from each other. Standard daily index ...