Journal of the Atmospheric Sciences: Recent submissions
Now showing items 1761-1780 of 13215
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Thermodynamic Constraints on the Morphology of Simulated Midlatitude Squall Lines
(American Meteorological Society, 2015)his study examines how environmental thermodynamics constrain the morphology of simulated idealized midlatitude squall lines (SLs). The thermodynamic soundings used for simulating various SLs are specified primarily by ... -
Nonhydrostatic Wave Generation at Strained Fronts
(American Meteorological Society, 2015)simple analytical model is developed to describe wave generation during frontogenesis forced by a horizontal strain field. In contrast to previous models, neither geostrophic nor hydrostatic balance is assumed. The generated ... -
A Quantitative Definition of Global Warming Hiatus and 50-Year Prediction of Global-Mean Surface Temperature
(American Meteorological Society, 2015)ecent global warming hiatus has received much attention; however, a robust and quantitative definition for the hiatus is still lacking. Recent studies by Scafetta, Wu et al., and Tung and Zhou showed that multidecadal ... -
Reconciling and Validating the Cloud Thickness and Liquid Water Path Tendencies Proposed by R. Wood and J. J. van der Dussen et al.
(American Meteorological Society, 2015)detailed derivation of stratocumulus cloud thickness and liquid water path tendencies as a function of the well-mixed boundary layer mass, heat, and moisture budget equations is presented. The derivation corrects an error ... -
Lagrangian Tracking Simulation of Droplet Growth in Turbulence–Turbulence Enhancement of Autoconversion Rate
(American Meteorological Society, 2015)he authors describe the Lagrangian cloud simulator (LCS), which simulates droplet growth in air turbulence. The LCS adopts the Euler?Lagrangian framework and can provide reference data for cloud microphysical models by ... -
The Effects of Surface Kinetics on Crystal Growth and Homogeneous Freezing in Parcel Simulations of Cirrus
(American Meteorological Society, 2015)he uptake of water vapor excess by ice crystals is a key process regulating the supersaturation in cold clouds. Both the ice crystal number concentration and depositional growth rate control the vapor uptake rate and are ... -
The Sensitivity of Tropical Cyclone Activity to Off-Equatorial Thermal Forcing in Aquaplanet Simulations
(American Meteorological Society, 2015)he sensitivity of global tropical cyclone (TC) activity to changes in a zonally symmetric sea surface temperature (SST) distribution and the associated large-scale atmospheric circulation are investigated. High-resolution ... -
Satellite Inference of Thermals and Cloud-Base Updraft Speeds Based on Retrieved Surface and Cloud-Base Temperatures
(American Meteorological Society, 2015)pdraft speeds of thermals have always been difficult to measure, despite the significant role they play in transporting pollutants and in cloud formation and precipitation. In this study, updraft speeds in buoyancy-driven ... -
CORRIGENDUM
(American Meteorological Society, 2015) -
The Development of Upper-Tropospheric Wind over the Western Hemisphere in Association with MJO Convective Initiation
(American Meteorological Society, 2015)his study examines the structure and driving mechanisms of upper-tropospheric intraseasonal zonal wind anomalies over the Western Hemisphere (WH) during the convective initiation of the Madden?Julian oscillation (MJO) over ... -
The Microphysics of Ice and Precipitation Development in Tropical Cumulus Clouds
(American Meteorological Society, 2015)he rapid glaciation of tropical cumulus clouds has been an enigma and has been debated in the literature for over 60 years. Possible mechanisms responsible for the rapid freezing have been postulated, but until now direct ... -
An Interpretation of Cloud Overlap Statistics
(American Meteorological Society, 2015)bservational studies have shown that the vertical overlap of cloudy layers separated by clear sky can exceed that of the random overlap assumption, suggesting a tendency toward minimum overlap. In addition, the rate of ... -
Compensation between Resolved and Unresolved Wave Drag in the Stratospheric Final Warmings of the Southern Hemisphere
(American Meteorological Society, 2015)he role of planetary wave drag and gravity wave drag in the breakdown of the stratospheric polar vortex and its associated final warming in the Southern Hemisphere is examined using reanalyses from MERRA and a middle-atmosphere ... -
Interactions between Typhoon Megi (2010) and a Low-Frequency Monsoon Gyre
(American Meteorological Society, 2015)he ARW Model is used to investigate the sharp northward turn of Super Typhoon Megi (2010) after it moved westward and crossed the Philippines. The NCEP analyzed fields during this period are separated into a slowly varying ... -
Generalizing Cloud Overlap Treatment to Include the Effect of Wind Shear
(American Meteorological Society, 2015)ix months of CloudSat and CALIPSO observations have been divided into over 8 million cloud scenes and collocated with ECMWF wind analyses to identify an empirical relationship between cloud overlap and wind shear for use ... -
Global Radiative–Convective Equilibrium in the Community Atmosphere Model, Version 5
(American Meteorological Society, 2015)n the continued effort to understand the climate system and improve its representation in atmospheric general circulation models (AGCMs), it is crucial to develop reduced-complexity frameworks to evaluate these models. ... -
Exploring the Tropically Excited Arctic Warming Mechanism with Station Data: Links between Tropical Convection and Arctic Downward Infrared Radiation
(American Meteorological Society, 2015)he Tropically Excited Arctic Warming (TEAM) mechanism ascribes warming of the Arctic surface to tropical convection, which excites poleward-propagating Rossby wave trains that transport water vapor and heat into the Arctic. ... -
On the Variability of Drop Size Distributions over Areas
(American Meteorological Society, 2015)ast studies of the variability of drop size distributions (DSDs) have used moments of the distribution such as the mass-weighted mean drop size as proxies for the entire size distribution. In this study, however, the authors ... -
Cold Pool and Precipitation Responses to Aerosol Loading: Modulation by Dry Layers
(American Meteorological Society, 2015)he relative sensitivity of midlatitude deep convective precipitation to aerosols and midlevel dry layers has been investigated in this study using high-resolution cloud-resolving model simulations. Nine simulations, including ... -
Evaluation of the Warm Rain Formation Process in Global Models with Satellite Observations
(American Meteorological Society, 2015)his study examines the warm rain formation process over the global ocean in global climate models. Methodologies developed to analyze CloudSat and Moderate Resolution Imaging Spectroradiometer (MODIS) satellite observations ...