Journal of the Atmospheric Sciences: Recent submissions
Now showing items 3421-3440 of 13215
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Applications of a Multiple Linear Regression Model to the Analysis of Relationships between Eastward- and Westward-Moving Intraseasonal Modes
(American Meteorological Society, 2004)Multiple linear regression models with nonlinear power terms may be applied to find relationships between interacting wave modes that may be characterized by different frequencies. Such regression techniques have been ... -
Simulation of Effects of Atmospheric Aerosols on Deep Turbulent Convective Clouds Using a Spectral Microphysics Mixed-Phase Cumulus Cloud Model. Part I: Model Description and Possible Applications
(American Meteorological Society, 2004)An updated version of the spectral (bin) microphysics cloud model developed at the Hebrew University of Jerusalem [the Hebrew University Cloud Model (HUCM)] is described. The model microphysics is based on the solution of ... -
Radiative Transfer Modeling for the CLAMS Experiment
(American Meteorological Society, 2005)Spectral and broadband radiances and irradiances (fluxes) were measured from surface, airborne, and spaceborne platforms in the Chesapeake Lighthouse and Aircraft Measurements for Satellites (CLAMS) campaign. The radiation ... -
Zonal Momentum Balance, Potential Vorticity Dynamics, and Mass Fluxes on Near-Surface Isentropes
(American Meteorological Society, 2005)While it has been recognized for some time that isentropic coordinates provide a convenient framework for theories of the global circulation of the atmosphere, the role of boundary effects in the zonal momentum balance and ... -
Effects of Low-Frequency Wave Interactions on Intraseasonal Oscillations
(American Meteorological Society, 2004)Intraseasonal oscillations (ISOs) control much of the large-scale variability of convection in the Tropics on time scales of about 15?100 days. These disturbances are often thought to be dominated by eastward-propagating ... -
The Coupled Manifold
(American Meteorological Society, 2005)A new method is presented to detect the portion of variability connected between two climatic fields. The method is a realization of the Procrustes problem, and it is a generalization of methods for analysis of variance ... -
Effects of Large Eddies on the Structure of the Marine Boundary Layer under Strong Wind Conditions
(American Meteorological Society, 2004)A model of the atmospheric boundary layer (BL) is presented that explicitly calculates a two-way interaction of the background flow and convective motions. The model is utilized for investigation of the formation of large ... -
Growth of Circulation around Supercell Updrafts
(American Meteorological Society, 2004)A formula is derived for the rate of change of circulation around an updraft perimeter at a constant elevation. This quantity depends on the continuous propagation of points on the edge, so an expression for local propagation ... -
A New Heuristic Lagrangian Marine Boundary Layer Cloud Model
(American Meteorological Society, 2004)A new heuristic model of stratocumulus cloudiness in the inversion-capped marine boundary layer is developed and tested. The essential ingredient is a new method for predicting the statistical distribution of temperature ... -
Effects of Environmentally Induced Asymmetries on Hurricane Intensity: A Numerical Study
(American Meteorological Society, 2004)The influence of uniform large-scale flow, the beta effect, and vertical shear of the environmental flow on hurricane intensity is investigated in the context of the induced convective or potential vorticity asymmetries ... -
Gap Flows through Idealized Topography. Part I: Forcing by Large-Scale Winds in the Nonrotating Limit
(American Meteorological Society, 2004)Gap winds produced by a uniform airstream flowing over an isolated flat-top ridge cut by a straight narrow gap are investigated by numerical simulation. On the scale of the entire barrier, the proportion of the oncoming ... -
Ozone Forecasts of the Stratospheric Polar Vortex–Splitting Event in September 2002
(American Meteorological Society, 2005)The Southern Hemisphere major warming event in September 2002 has led to a breakup of the vortex in the middle and higher stratosphere and to a corresponding splitting of the ozone hole. Daily 3D ozone forecasts, produced ... -
The Ozone Hole of 2002 as Measured by TOMS
(American Meteorological Society, 2005)Since its discovery in 1985, the ozone hole has been regularly mapped using the data from Total Ozone Mapping Spectrometer (TOMS) instruments on several satellites. The current TOMS, on the Earth Probe satellite, has been ... -
Interannual Variations of the Seasonal March in the Southern Hemisphere Stratosphere for 1979–2002 and Characterization of the Unprecedented Year 2002
(American Meteorological Society, 2005)Dynamical features of the interannual variations of the seasonal march in the Southern Hemisphere stratosphere are investigated with the NCEP?NCAR reanalysis dataset from 1979 to 2002, and the unprecedented year 2002, in ... -
Reconstruction and Simulation of Stratospheric Ozone Distributions during the 2002 Austral Winter
(American Meteorological Society, 2005)Satellite-based solar occultation measurements during the 2002 austral winter have been used to reconstruct global, three-dimensional ozone distributions. The reconstruction method uses correlations between potential ... -
Stratospheric Vacillations and the Major Warming over Antarctica in 2002
(American Meteorological Society, 2005)The conditions that lead to the major warming over Antarctica in late September 2002 are examined. In many respects, the warming resembled wave-2 warmings seen in the Northern Hemisphere; the winter cyclonic circulation ... -
A Possible Influence of Equatorial Winds on the September 2002 Southern Hemisphere Sudden Warming Event
(American Meteorological Society, 2005)The stratospheric sudden warming in the Southern Hemisphere (SH) in September 2002 was unexpected for two reasons. First, planetary wave activity in the Southern Hemisphere is very weak, and midwinter warmings have never ... -
Three-Dimensional Model Study of the Antarctic Ozone Hole in 2002 and Comparison with 2000
(American Meteorological Society, 2005)An offline 3D chemical transport model (CTM) has been used to study the evolution of the Antarctic ozone hole during the sudden warming event of 2002 and to compare it with similar simulations for 2000. The CTM has a ... -
Mixing Processes during the Antarctic Vortex Split in September–October 2002 as Inferred from Source Gas and Ozone Distributions from ENVISAT–MIPAS
(American Meteorological Society, 2005)In late September 2002, an Antarctic major stratospheric warming occurred, which led to a strong distortion of the southern polar vortex and to a split of its mid- and upper-stratospheric parts. Such an event had never ... -
The Ozone Hole Breakup in September 2002 as Seen by SCIAMACHY on ENVISAT
(American Meteorological Society, 2005)An unprecedented stratospheric warming in the Southern Hemisphere in September 2002 led to the breakup of the Antarctic ozone hole into two parts. The Scanning Imaging Absorption Spectrometer for Atmospheric Chartography ...