Journal of the Atmospheric Sciences: Recent submissions
Now showing items 3101-3120 of 13215
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Multiple Regimes and Low-Frequency Oscillations in the Northern Hemisphere’s Zonal-Mean Flow
(American Meteorological Society, 2006)This paper studies multiple regimes and low-frequency oscillations in the Northern Hemisphere zonal-mean zonal flow in winter, using 55 yr of daily observational data. The probability density function estimated in the phase ... -
Aerosol Optical Properties and Particle Size Distributions on the East Coast of the United States Derived from Airborne In Situ and Remote Sensing Measurements
(American Meteorological Society, 2006)Airborne in situ measurements of vertical profiles and horizontal transects of aerosol optical and physical properties, obtained during the Chesapeake Lighthouse and Aircraft Measurements for Satellites (CLAMS) field ... -
Parameterization of the Autoconversion Process. Part II: Generalization of Sundqvist-Type Parameterizations
(American Meteorological Society, 2006)Existing Sundqvist-type parameterizations, which only consider dependence of the autoconversion rate on cloud liquid water content, are generalized to explicitly account for the droplet concentration and relative dispersion ... -
Interaction of an Asymmetric Double Vortex and Trochoidal Motion of a Tropical Cyclone with the Concentric Eyewall Structure
(American Meteorological Society, 2006)Radar echo images demonstrate that mature tropical cyclones frequently have a concentric eyewall structure, which consists of the inner eyewall, echo-free moat, and outer eyewall regions. Near the inner and outer eyewalls, ... -
Aerosol and Cloud Microphysical Characteristics of Rifts and Gradients in Maritime Stratocumulus Clouds
(American Meteorological Society, 2006)A cloud rift is characterized as a large-scale, persistent area of broken, low-reflectivity stratocumulus clouds usually surrounded by a solid deck of stratocumulus. A rift observed off the coast of California was investigated ... -
High-Resolution In Situ Profiling through the Stable Boundary Layer: Examination of the SBL Top in Terms of Minimum Shear, Maximum Stratification, and Turbulence Decrease
(American Meteorological Society, 2006)Some 50 separate high-resolution profiles of small-scale turbulence defined by the energy dissipation rate (ε), horizontal wind speed, and temperature from near the surface, through the nighttime stable boundary layer ... -
Using MODIS and AERONET to Determine GCM Aerosol Size
(American Meteorological Society, 2006)Aerosol size is still a poorly constrained quantity in general circulation models (GCMs). By using the modal radii of the coarse and fine mode retrieved from 103 stations in the Aerosol Robotic Network (AERONET) and the ... -
CORRIGENDUM
(American Meteorological Society, 2005) -
Large-Eddy Simulation of Air Parcels in Stratocumulus Clouds: Time Scales and Spatial Variability
(American Meteorological Society, 2006)Large ensembles of air parcel trajectories driven by the (large-eddy simulation) LES-generated velocity fields from simulations of stratocumulus clouds were analyzed, focusing on statistics of air parcel in-cloud time ... -
Diagnosing Monthly Mean Boundary Layer Properties from Reanalysis Data Using a Bulk Boundary Layer Model
(American Meteorological Society, 2006)The mixed-layer approach to modeling the planetary boundary layer (PBL) is particularly well suited to inversion-topped PBLs, such as the stratocumulus-topped boundary layer found off the west coast of America in the ... -
Arctic Mixed-Phase Cloud Properties Derived from Surface-Based Sensors at SHEBA
(American Meteorological Society, 2006)Arctic mixed-phase cloud macro- and microphysical properties are derived from a year of radar, lidar, microwave radiometer, and radiosonde observations made as part of the Surface Heat Budget of the Arctic Ocean (SHEBA) ... -
Cloud Phase Structure: Experimental Data Analysis and Parameterization
(American Meteorological Society, 2006)In this article, the data collected over 6 yr of daily observations at a network of aircraft sounding (31 stations) in the former Soviet Union, and the data collected by Canadian researchers in field campaigns in the 1990s, ... -
The Seasonal Cycles in the Distribution of Precipitation around Cyclones in the Western North Pacific and Atlantic
(American Meteorological Society, 2006)The seasonal cycles in the distribution of precipitation around the western North Pacific and Atlantic cyclones have been examined by compositing quantitative estimates of the precipitation rate relative to cyclone centers. ... -
A Method to Estimate Aerosol Radiative Forcing from Spectral Optical Depths
(American Meteorological Society, 2006)Radiative forcing of aerosols is much more difficult to estimate than that of well-mixed gases due to the large spatial variability of aerosols and the lack of an adequate database on their radiative properties. Estimation ... -
Sensitivity Studies of the Importance of Dust Ice Nuclei for the Indirect Aerosol Effect on Stratiform Mixed-Phase Clouds
(American Meteorological Society, 2006)New parameterizations of contact freezing and immersion freezing in stratiform mixed-phase clouds (with temperatures between 0° and ?35°C) for black carbon and mineral dust assumed to be composed of either kaolinite ... -
The Role of the North American Topography on the Maintenance of the Great Plains Summer Low-Level Jet
(American Meteorological Society, 2006)Summer precipitation over the central United States depends strongly on the strength of the Great Plains low-level jet (LLJ). The Geophysical Fluid Dynamics Laboratory?s new generation of the atmospheric general circulation ... -
A Test of Ice Self-Collection Kernels Using Aircraft Data
(American Meteorological Society, 2006)Aircraft observations from the Cirrus Regional Study of Tropical Anvils and Cirrus Layers (CRYSTAL)?Florida Area Cirrus Experiment (FACE) campaign obtained in the anvil of a large convective storm from 26 July 2002 are ... -
On the Application of the Dynamic Smagorinsky Model to Large-Eddy Simulations of the Cloud-Topped Atmospheric Boundary Layer
(American Meteorological Society, 2006)In this paper the dynamic Smagorinsky model originally developed for engineering flows is adapted for simulations of the cloud-topped atmospheric boundary layer in which an anelastic form of the governing equations is used. ... -
Modeling the Evolution of the Atmospheric Boundary Layer Coupled to the Land Surface for Three Contrasting Nights in CASES-99
(American Meteorological Society, 2006)The modeling and prediction of the stable boundary layer over land is a persistent, problematic feature in weather, climate, and air quality topics. Here, the performance of a state-of-the-art single-column boundary layer ... -
Probability Distributions of Angle of Approach and Relative Velocity for Colliding Droplets in a Turbulent Flow
(American Meteorological Society, 2006)Prediction of the effect of air turbulence on statistics relevant to a collision?coalescence process represents a key challenge in the modeling of cloud microphysics. In this paper, collision-related statistics for ...