Journal of the Atmospheric Sciences: Recent submissions
Now showing items 3621-3640 of 13215
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CORRIGENDUM
(American Meteorological Society, 2010) -
How Does Rain Affect Surface Pressure in a One-Dimensional Framework?
(American Meteorological Society, 2010)The process of hydrostatic adjustment in a vertical column is discussed in the context of rain formation and sedimentation. The authors assume an event of instantaneous condensation in a midatmospheric layer that removes ... -
Investigating the Linear and Nonlinear Stationary Wave Response to Anomalous North American Snow Cover
(American Meteorological Society, 2010)ontinental-scale snow cover represents a broad thermal forcing on monthly-to-intraseasonal time scales, with the potential to modify local and remote atmospheric circulation. A previous GCM study reported robust transient-eddy ... -
Atmospheric Local Energetics and Energy Interactions between Mean and Eddy Fields. Part II: An Example for the Last Glacial Maximum Climate
(American Meteorological Society, 2010)The atmospheric local energy cycle in the Last Glacial Maximum (LGM) climate simulated by an atmosphere?ocean GCM (AOGCM) is investigated using a new diagnostic scheme. In contrast to existing ones, this scheme can represent ... -
Testing the Hypothesis that the MJO is a Mixed Rossby–Gravity Wave Packet
(American Meteorological Society, 2010)The Madden?Julian oscillation (MJO), also known as the intraseasonal oscillation (ISO), is a planetary-scale mode of variation in the tropical Indian and western Pacific Oceans. Basic questions about the MJO are why it ... -
Excitation of Intraseasonal Variability in the Equatorial Atmosphere by Yanai Wave Groups via WISHE-Induced Convection
(American Meteorological Society, 2010)A mechanism is presented, based on multiscale interactions via nonlinear wind-induced surface heat exchange (WISHE), that produces eastward-propagating, intraseasonal convective anomalies in the tropical atmosphere. ... -
A Mixed Scheme for Subgrid-Scale Fluxes in Cloud-Resolving Models
(American Meteorological Society, 2010)A large-domain large-eddy simulation of a tropical deep convection system is used as a benchmark to derive and test a mixed subgrid-scale (SGS) scheme for scalar and momentum fluxes in cloud-resolving models (CRMs). The ... -
Relation between the 100-hPa Heat Flux and Stratospheric Potential Vorticity
(American Meteorological Society, 2010)It is shown that a quantitative relation exists between the stratospheric polar cap potential vorticity and the 100-hPa eddy heat flux. A difference in potential vorticity between years is found to be linearly related to ... -
The Vertical Distribution of Radon in Clear and Cloudy Daytime Terrestrial Boundary Layers
(American Meteorological Society, 2010)Radon (222Rn) is a powerful natural tracer of mixing and exchange processes in the atmospheric boundary layer. The authors present and discuss the main features of a unique dataset of 50 high-resolution vertical radon ... -
The Variability of the Atlantic Storm Track and the North Atlantic Oscillation: A Link between Intraseasonal and Interannual Variability
(American Meteorological Society, 2010)The winter-mean North Atlantic Oscillation (NAO) index has been mostly positive since the 1980s, with a linear upward trend during the period from 1978 to 1990 (P1) and a linear downward trend during the period from 1991 ... -
Effective Radius of Ice Particles in Cirrus and Contrails
(American Meteorological Society, 2010)This paper discusses the ratio C between the volume mean radius and the effective radius of ice particles in cirrus and contrails. The volume mean radius is proportional to the third root of the ratio between ice water ... -
Characterizing the Variability and Extremes of the Stratospheric Polar Vortices Using 2D Moment Analysis
(American Meteorological Society, 2010)he mean state, variability, and extreme variability of the stratospheric polar vortices, with an emphasis on the Northern Hemisphere (NH) vortex, are examined using two-dimensional moment analysis and extreme value theory ... -
Exploring the Land–Ocean Contrast in Convective Vigor Using Islands
(American Meteorological Society, 2010)Moist convection is well known to be generally more intense over continental than maritime regions, with larger updraft velocities, graupel, and lightning production. This study explores the transition from maritime to ... -
Observational Analysis of Sudden Tropical Cyclone Track Changes in the Vicinity of the East China Sea
(American Meteorological Society, 2011)n observational analysis of observed sudden typhoon track changes is conducted with a focus on the underlying mechanism and the possible role of slowly varying low-frequency flows. Four typhoons that took a generally ... -
The Surface-Pressure Signature of Atmospheric Tides in Modern Climate Models
(American Meteorological Society, 2010)Although atmospheric tides driven by solar heating are readily detectable at the earth?s surface as variations in air pressure, their simulations in current coupled global climate models have not been fully examined. This ... -
Response of the Hadley Circulation to Climate Change in an Aquaplanet GCM Coupled to a Simple Representation of Ocean Heat Transport
(American Meteorological Society, 2010)t is unclear how the width and strength of the Hadley circulation are controlled and how they respond to climate changes. Simulations of global warming scenarios with comprehensive climate models suggest the Hadley circulation ... -
Spectral Analysis of Multidimensional Stochastic Geophysical Models with an Application to Decadal ENSO Variability
(American Meteorological Society, 2010)Simple linear models with additive stochastic forcing have been rather successful in explaining the observed spectrum of important climate variables. Motivated by this, the authors analyze the spectral character of such a ... -
Sedimentation-Induced Errors in Bulk Microphysics Schemes
(American Meteorological Society, 2010)The computation of hydrometeor sedimentation in one-moment, two-moment, and three-moment bulk microphysics parameterizations is examined in the context of a 1D model, with no other microphysical processes active. The ... -
The Effective Static Stability Experienced by Eddies in a Moist Atmosphere
(American Meteorological Society, 2010)Water vapor directly affects the dynamics of atmospheric eddy circulations through the release of latent heat. But it is difficult to include latent heat release in dynamical theories because of the associated nonlinearity ... -
Momentum Flux Spectrum of Convective Gravity Waves. Part I: An Update of a Parameterization Using Mesoscale Simulations
(American Meteorological Society, 2010)he convective source and momentum flux spectra of a parameterization of convective gravity wave drag (GWDC) are validated in a three-dimensional spectral space using mesoscale numerical simulations for various ideal and ...