Journal of the Atmospheric Sciences: Recent submissions
Now showing items 1121-1140 of 13215
-
Azimuthal Distribution of Deep Convection, Environmental Factors, and Tropical Cyclone Rapid Intensification: A Perspective from HWRF Ensemble Forecasts of Hurricane Edouard (2014)
(American Meteorological Society, 2017)AbstractForecasts from the operational Hurricane Weather Research and Forecasting (HWRF)-based ensemble prediction system for Hurricane Edouard (2014) are analyzed to study the differences in both the tropical cyclone ... -
Stratiform Precipitation Processes in Cyclones Passing over a Coastal Mountain Range
(American Meteorological Society, 2018)AbstractThe Olympic Mountains Experiment (OLYMPEX) documented precipitation and drop size distributions (DSDs) in landfalling midlatitude cyclones with gauges and disdrometers located at various distances from the coast ... -
Heating and Moistening of the MJO during DYNAMO in ECMWF Reforecasts
(American Meteorological Society, 2018)AbstractReforecasts produced by the ECMWF Integrated Forecast System (IFS) were used to study heating and moistening processes associated with three MJO events over the equatorial Indian Ocean during the Dynamics of the ... -
The Simulated Impact of the Snow Albedo Feedback on the Large-Scale Mountain–Plain Circulation East of the Colorado Rocky Mountains
(American Meteorological Society, 2017)AbstractThe Front Range mountain?plain circulation (FRMC) is a large-scale diurnally driven wind system that occurs east of the Colorado Rocky Mountains in the United States and affects the weather both in the Rocky Mountains ... -
Can a Simple Dynamical System Describe the Interplay between Drag and Buoyancy in Terrain-Induced Canopy Flows?
(American Meteorological Society, 2017)AbstractUnder nonneutral stratification and in the presence of topography, the dynamics of turbulent flow within a canopy is not yet completely understood. This has, among other consequences, serious implications for the ... -
Large-Eddy Simulation of the Stratocumulus-Capped Boundary Layer with Explicit Filtering and Reconstruction Turbulence Modeling
(American Meteorological Society, 2017)AbstractLarge-eddy simulation (LES) has been an essential tool in the development of theory and parameterizations for clouds, but when applied to stratocumulus clouds under sharp temperature inversions, many LES models ... -
Statistical Theory on the Functional Form of Cloud Particle Size Distributions
(American Meteorological Society, 2018)AbstractSeveral functional forms of cloud particle size distributions (PSDs) have been used in numerical modeling and remote sensing retrieval studies of clouds and precipitation, including exponential, gamma, lognormal, ... -
Three-Dimensional Structure of Mass-Weighted Isentropic Time-Mean Meridional Circulations
(American Meteorological Society, 2018)AbstractThe present study develops a diagnostic framework for investigating the three-dimensional (3D) structure of mass-weighted isentropic time-mean (T-MIM) meridional circulations and conducts a preliminary analysis of ... -
Influence of Microphysical Variability on Stochastic Condensation in a Turbulent Laboratory Cloud
(American Meteorological Society, 2017)AbstractDiffusional growth of droplets by stochastic condensation and a resulting broadening of the size distribution has been considered as a mechanism for bridging the cloud droplet growth gap between condensation and ... -
A Mesocosm Double Feature: Insights into the Chemical Makeup of Marine Ice Nucleating Particles
(American Meteorological Society, 2018)AbstractThe abundance of atmospheric ice nucleating particles (INPs) is a source of uncertainty for numerical representation of ice-phase transitions in mixed-phase clouds. While sea spray aerosol (SSA) exhibits less ice ... -
Boundary Layer Height and Buoyancy Determine the Horizontal Scale of Convective Self-Aggregation
(American Meteorological Society, 2017)AbstractOrganized rainstorms and their associated overturning circulations can self-emerge over an ocean surface with uniform temperature in cloud-resolving simulations. This phenomenon is referred to as convective ... -
Large-Eddy Simulation Study of Log Laws in a Neutral Ekman Boundary Layer
(American Meteorological Society, 2018)Abstract The characteristics of wind profiles in a neutral atmospheric boundary layer and their dependence on the geostrophic wind speed Ug, Coriolis parameter f, and surface roughness length z0 are examined utilizing ... -
Eddy Sensitivity to Jet Characteristics
(American Meteorological Society, 2018)AbstractThe atmosphere exhibits two distinct types of jets: the thermally driven subtropical jet and the more poleward eddy-driven jet. Depending on location and season, these jets are often merged or separated, and their ... -
Determination of the Ice Particle Size Distributions Using Observations as the Integrated Constraints
(American Meteorological Society, 2017)AbstractThe possibility is suggested of estimating particle size distributions (PSD) solely based on the bulk quantities of the hydrometeors. The method, inspired by the maximum entropy principle, can be applied to any ... -
Testing the Sensitivity of the Extratropical Response to the Location, Amplitude, and Propagation Speed of Tropical Convection
(American Meteorological Society, 2017)AbstractThe dynamical core of a dry global model is used to investigate the role of central Pacific versus warm pool tropical convection on the extratropical response over the North Pacific and North America. A series of ... -
Predictability and Dynamics of Hurricane Joaquin (2015) Explored through Convection-Permitting Ensemble Sensitivity Experiments
(American Meteorological Society, 2017)AbstractReal-time ensemble forecasts from the Pennsylvania State University (PSU) WRF EnKF system (APSU) for Hurricane Joaquin (2015) are examined in this study. The ensemble forecasts, from early in Joaquin?s life cycle, ... -
Spectral Signatures of Moisture–Convection Feedbacks over the Indian Ocean
(American Meteorological Society, 2018)AbstractPositive feedbacks between the cloud population and the environmental moisture field are central to theoretical expositions on the Madden?Julian oscillation (MJO). This study investigates the statistical incidence ... -
What is the Key Feature of Convection Leading up to Tropical Cyclone Formation?
(American Meteorological Society, 2018)AbstractInfrared brightness temperature data are used to investigate convective evolution during tropical cyclone (TC) formation in a quasi-Lagrangian framework. More than 150 named Atlantic storms during 1989?2010 were ... -
A Framework for Convection and Boundary Layer Parameterization Derived from Conditional Filtering
(American Meteorological Society, 2017)AbstractA new theoretical framework is derived for parameterization of subgrid physical processes in atmospheric models; the application to parameterization of convection and boundary layer fluxes is a particular focus. ... -
A Numerical Study on Rapid Intensification of Typhoon Vicente (2012) in the South China Sea. Part II: Roles of Inner-Core Processes
(American Meteorological Society, 2017)AbstractIn Part I of this study, the role of environmental monsoon flow in the onset of rapid intensification (RI) of Typhoon Vicente (2012) was discussed. In this Part II, key inner-core processes that effectively resist ...