Journal of the Atmospheric Sciences: Recent submissions
Now showing items 3641-3660 of 13215
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Response of Tropical Precipitation to Global Warming
(American Meteorological Society, 2010)Using high-resolution cloud-resolving simulations with different CO2 concentrations, local precipitation fluxes are found to obey Clausius?Clapeyron (CC) scaling. Previous studies of the effect of CO2 concentration on ... -
Signatures of Nonlinear Dynamics in an Idealized Atmospheric Model
(American Meteorological Society, 2010)Signatures of nonlinear dynamics are analyzed by studying the phase-space tendencies of a global baroclinic, quasigeostrophic, three-level (QG3) model with topography. Nonlinear, stochastic, low-order prototypes of the ... -
Impact of Cloud-Nucleating Aerosols in Cloud-Resolving Model Simulations of Warm-Rain Precipitation in the East China Sea
(American Meteorological Society, 2010)Cloud-nucleating aerosols emitted from mainland China have the potential to influence cloud and precipitation systems that propagate through the region of the East China Sea. Both simulations from the Spectral Radiation-Transport ... -
Potential Temperature and Potential Vorticity Inversion: Complementary Approaches
(American Meteorological Society, 2010)Given the distribution of one atmospheric variable, that of nearly all others can be derived in balanced flow. In particular, potential vorticity inversion (PVI) selects potential vorticity (PV) to derive pressure, winds, ... -
On the Determination of Age of Air Trends from Atmospheric Trace Species
(American Meteorological Society, 2010)Trace chemical species have been used in numerical models to calculate the age of air (AOA), which is a measure of the strength of the mean meridional circulation. The trend in the AOA has also been computed and found to ... -
Water Vapor and Mechanical Work: A Comparison of Carnot and Steam Cycles
(American Meteorological Society, 2010)The impact of water vapor on the production of kinetic energy in the atmosphere is discussed here by comparing two idealized heat engines: the Carnot cycle and the steam cycle. A steam cycle transports water from a warm ... -
Numerical Simulation of Radial Cloud Bands within the Upper-Level Outflow of an Observed Mesoscale Convective System
(American Meteorological Society, 2010)Turbulence affecting aircraft is frequently reported within bands of cirrus anvil cloud extending radially outward from upstream deep convection in mesoscale convective systems (MCSs). A high-resolution convection permitting ... -
Balanced Contribution to the Intensification of a Tropical Cyclone Simulated in TCM4: Outer-Core Spinup Process
(American Meteorological Society, 2010)The balanced contribution to the intensification of a tropical cyclone simulated in the three-dimensional, nonhydrostatic, full-physics tropical cyclone model version 4 (TCM4), in particular the spinup of the outer-core ... -
Mechanisms of Poleward Propagating, Intraseasonal Convective Anomalies in Cloud System–Resolving Models
(American Meteorological Society, 2010)An envelope of convection that propagates both poleward and eastward accounts for the largest fraction of intraseasonal variance of the tropical atmosphere during boreal summer. Here the mechanisms of poleward propagating ... -
Uncertainties in Microwave Properties of Frozen Precipitation: Implications for Remote Sensing and Data Assimilation
(American Meteorological Society, 2010)A combined active/passive modeling system that converts CloudSat observations to simulated microwave brightness temperatures (TB) is used to assess different ice particle models under precipitating conditions. Simulation ... -
Evolution of Multiscale Vortices in the Development of Hurricane Dolly (2008)
(American Meteorological Society, 2011)As a follow-up to a previously published article on the initial development and genesis of Hurricane Dolly (2008), this study further examines the evolution of, and interactions among, multiscale vortices ranging from the ... -
Improved Representation of Ice Particle Masses Based on Observations in Natural Clouds
(American Meteorological Society, 2010)The mass?dimensional relationship put forth by Brown and Francis has been widely used for developing parameterizations for representing ice cloud microphysical properties. This relationship forms the cornerstone for past ... -
The Pacific’s Response to Surface Heating in 130 Yr of SST: La Niña–like or El Niño–like?
(American Meteorological Society, 2010)Using a modified method of multiple linear regression on instrumented sea surface temperature (SST) in the two longest historical datasets [the Extended Reconstructed SST dataset (ERSST) and the Met Office Hadley Centre ... -
Genesis of Typhoon Chanchu (2006) from a Westerly Wind Burst Associated with the MJO. Part II: Roles of Deep Convection in Tropical Transition
(American Meteorological Society, 2010)n this study, the life cycles of a series of four major mesoscale convective systems (MCSs) during genesis and their roles in transforming a vertically tilted vortex associated with a westerly wind burst (hereafter the WWB ... -
Analysis of Gravity Waves Generated at the Top of a Drainage Flow
(American Meteorological Society, 2010)Drainage or katabatic flows are common mesoscale circulations established as a result of differential radiative cooling of near-surface air masses in sloping terrain. The initial irruption of these flows, with sudden shifts ... -
Mammatus Clouds as a Response to Cloud-Base Radiative Heating
(American Meteorological Society, 2010)Mammatus clouds are the pouchlike lobes seen hanging from mid- to high-level clouds. They can look quite dramatic, but they are also interesting because they provide clues to what controls anvil cirrus dynamic evolution. ... -
Equatorial Waves in Opposite QBO Phases
(American Meteorological Society, 2010)methodology for identifying equatorial waves is used to analyze the multilevel 40-yr ECMWF Re-Analysis (ERA-40) data for two different years (1992 and 1993) to investigate the behavior of the equatorial waves under opposite ... -
Effects of Aerosol Solubility and Regeneration on Warm-Phase Orographic Clouds and Precipitation Simulated by a Detailed Bin Microphysical Scheme
(American Meteorological Society, 2010)This study evaluates the possible impact of aerosol solubility and regeneration on warm-phase orographic clouds and precipitation. The sensitivity evaluation is performed by simulating cloud formation over two identical ... -
Stochastic Parameterization Schemes for Use in Realistic Climate Models
(American Meteorological Society, 2010)Stochastic parameterizations of fast-evolving, subgrid-scale processes are increasingly being used in a range of models from conceptual models to general circulation models. However, stochastic terms are generally included ... -
Finite-Amplitude Wave Activity and Mean Flow Adjustments in the Atmospheric General Circulation. Part I: Quasigeostrophic Theory and Analysis
(American Meteorological Society, 2010)A diagnostic relationship between finite-amplitude wave activity and the associated adiabatic adjustments to the zonal-mean zonal wind and temperature is developed in the quasigeostrophic (QG) framework and is applied to ...