Journal of the Atmospheric Sciences: Recent submissions
Now showing items 4761-4780 of 13215
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Parameterization of Infrared Absorption in Midlatitude Cirrus Clouds
(American Meteorological Society, 2003)Employing a new approach based on combined Raman lidar and millimeter-wave radar measurements and a parameterization of the infrared absorption coefficient σa (km?1) in terms of retrieved cloud microphysics, a statistical ... -
An Adjoint Sensitivity Method for the Adaptive Location of the Observations in Air Quality Modeling
(American Meteorological Society, 2003)The spatiotemporal distribution of observations plays an essential role in the data assimilation process. An adjoint sensitivity method is applied to the problem of adaptive location of the observational system for a ... -
Primitive-Equation-Based Low-Order Models with Seasonal Cycle. Part II: Application to Complexity and Nonlinearity of Large-Scale Atmosphere Dynamics
(American Meteorological Society, 2003)A recently developed class of semiempirical low-order models is utilized for the reexamination of several aspects of the complexity and nonlinearity of large-scale dynamics in a GCM. Given their low dimensionality, these ... -
Primitive-Equation-Based Low-Order Models with Seasonal Cycle. Part I: Model Construction
(American Meteorological Society, 2003)In a continuation of previous investigations on deterministic reduced atmosphere models with compact state space representation, two main modifications are introduced. First, primitive equation dynamics is used to describe ... -
A Shallow CISK, Deep Equilibrium Mechanism for the Interaction between Large-Scale Convection and Large-Scale Circulations in the Tropics
(American Meteorological Society, 2003)In this paper, the circulations driven by deep heating and shallow heating are investigated through analytically solving a set of linear equations and examining circulations simulated by a dry primitive equation model. ... -
Hydrostatic Adjustment in Nonisothermal Atmospheres
(American Meteorological Society, 2003)The author examines hydrostatic adjustment due to heating in two nonisothermal atmospheres. In the first case both the temperature and lapse rate decrease with height; in the second case the atmosphere consists of a ... -
Raindrop Size Distribution in Different Climatic Regimes from Disdrometer and Dual-Polarized Radar Analysis
(American Meteorological Society, 2003)The application of polarimetric radar data to the retrieval of raindrop size distribution parameters and rain rate in samples of convective and stratiform rain types is presented. Data from the Colorado State University ... -
The Relationship between Storm Motion, Vertical Wind Shear, and Convective Asymmetries in Tropical Cyclones
(American Meteorological Society, 2003)The influence of the direction of storm motion on the azimuthal distribution of electrified convection in 35 Atlantic basin tropical cyclones from 1985 to 1999 was examined using data from the National Lightning Detection ... -
Predictable Component Analysis, Canonical Correlation Analysis, and Autoregressive Models
(American Meteorological Society, 2003)The purpose of this paper is to clarify the relation between canonical correlation analysis, autoregressive models (also called linear inverse models), and a relatively new statistical technique known as predictable component ... -
Systematic Multiscale Models for the Tropics
(American Meteorological Society, 2003)Systematic multiscale perturbation theory is utilized to develop self-consistent simplified model equations for the interaction across multiple spatial and/or temporal scales in the Tropics. One of these models involves ... -
Tracer Equivalent Latitude: A Diagnostic Tool for Isentropic Transport Studies
(American Meteorological Society, 2003)Area equivalent latitude based on potential vorticity (PV) is a widely used diagnostic for isentropic transport in the stratosphere and upper troposphere. Here, an alternate method for calculating equivalent latitude is ... -
Atmospheric Energetics in the Wavelet Domain. Part II: Time-Averaged Observed Atmospheric Blocking
(American Meteorological Society, 2003)Wavelet energetics (WE) is a useful generalization of traditional wavenumber energetics, for analyzing atmospheric dynamics. WE is doubly indexed by wavenumber band j and location k. The interpretation is that 2 to the jth ... -
Testing Simple Models of ENSO
(American Meteorological Society, 2003)The realistic simulation of El Niño?Southern Oscillation (ENSO) by the University of California, Los Angeles (UCLA), coupled atmosphere?ocean general circulation model (CGCM) is used to test two simple theoretical models ... -
Mechanism for the Generation of Secondary Waves in Wave Breaking Regions
(American Meteorological Society, 2003)The authors propose that the body force that accompanies wave breaking is potentially an important linear mechanism for generating secondary waves that propagate into the mesosphere and lower thermosphere. While the focus ... -
Nonlinear Planetary Wave Reflection in an Atmospheric GCM
(American Meteorological Society, 2003)The nonlinear behavior of planetary waves excited by midlatitude topography is considered in an atmospheric GCM. The GCM is run at standard resolution (T42) and includes all of the complexity normally associated with a ... -
The Implications of Tropical Rossby Waves for Tropical Tropopause Cirrus Formation and for the Equatorial Upwelling of the Brewer–Dobson Circulation
(American Meteorological Society, 2003)This study puts forward a mechanism for the observed upwelling in the tropical upper troposphere and lower stratosphere. In this hypothesis, the tropical upwelling is driven by momentum transport by Rossby waves that are ... -
Remarks on Quasi-Equilibrium Theory
(American Meteorological Society, 2003)A recent article by J. I. Yano has indicated that there is an inconsistency in the original formulation of the quasi-equilibrium theory of Arakawa and Schubert. He argues that this inconsistency results from a contradiction ... -
Statistics of Temperature Fluctuations in a Buoyancy-Dominated Boundary Layer Flow Simulated by a Large Eddy Simulation Model
(American Meteorological Society, 2003)Temperature fluctuations in an atmospheric convective boundary layer are investigated by means of large eddy simulations (LESs). A novel statistical characterization for both weak temperature fluctuations and strong ... -
Turbulence, Condensation, and Liquid Water Transport in Numerically Simulated Nonprecipitating Stratocumulus Clouds
(American Meteorological Society, 2003)Condensation and turbulent liquid water transport in stratocumulus clouds involve complicated interactions between turbulence dynamics and cloud microphysical processes, and play essential roles in defining the cloud ... -
Computation of Domain-Averaged Shortwave Irradiance by a One-Dimensional Algorithm Incorporating Correlations between Optical Thickness and Direct Incident Radiation
(American Meteorological Society, 2003)A one-dimensional radiative transfer algorithm that accounts for correlations between the optical thickness and the incident direct solar radiation is developed to compute the domain-averaged shortwave irradiance profile. ...