Journal of the Atmospheric Sciences: Recent submissions
Now showing items 2021-2040 of 13215
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Theory of Time-Dependent Freezing. Part I: Description of Scheme for Wet Growth of Hail
(American Meteorological Society, 2014)t subzero temperatures, cloud particles can contain both ice and liquid water fractions. Wet growth of precipitation particles occurs when supercooled cloud liquid is accreted faster than it can freeze on impact.With a ... -
A Theoretical Study on the Spontaneous Radiation of Inertia–Gravity Waves Using the Renormalization Group Method. Part I: Derivation of the Renormalization Group Equations
(American Meteorological Society, 2014)y using the renormalization group (RG) method, the interaction between balanced flows and Doppler-shifted inertia?gravity waves (GWs) is formulated for the hydrostatic Boussinesq equations on the f plane. The derived ... -
Adapting Two-Moment Microphysics Schemes across Model Resolutions: Subgrid Cloud and Precipitation Fraction and Microphysical Sub–Time Step
(American Meteorological Society, 2014)wo-moment multiclass microphysics schemes are very promising tools to be used in high-resolution NWP models. However, they must be adapted for coarser resolutions. Here, a twofold solution is proposed?namely, a simple ... -
The Dissipation Structure of Extratropical Cyclones
(American Meteorological Society, 2013)he physical characteristics of extratropical cyclones are investigated based on nonequilibrium thermodynamics. Nonequilibrium thermodynamics, using entropy as its main tool, has been widely used in many scientific fields. ... -
Influence of Microscale Turbulent Droplet Clustering on Radar Cloud Observations
(American Meteorological Society, 2014)his study investigates the influence of microscale turbulent clustering of cloud droplets on the radar reflectivity factor and proposes a new parameterization to account for it. A three-dimensional direct numerical simulation ... -
Relative Humidity in the Troposphere with AIRS
(American Meteorological Society, 2014)ew global satellite data from the Atmospheric Infrared Sounder (AIRS) are applied to study the tropospheric relative humidity (RH) distribution and its influence on outgoing longwave radiation (OLR) for January and July ... -
A Mass Budget Analysis on the Interannual Variability of the Polar Surface Pressure in the Winter Season
(American Meteorological Society, 2014)his study reports a mass budget analysis on the year-to-year variability of the winter [December?February (DJF)]-mean Arctic (60°?90°N) surface pressure (Ps) using the 33-yr daily Interim ECMWF Re-Analysis (ERA-Interim; ... -
Dynamical Forcing of Subseasonal Variability in the Tropical Brewer–Dobson Circulation
(American Meteorological Society, 2014)pwelling across the tropical tropopause exhibits strong subseasonal variability superimposed on the well-known annual cycle, and these variations directly affect temperature and tracers in the tropical lower stratosphere. ... -
The Impact of Raindrop Collisional Processes on the Polarimetric Radar Variables
(American Meteorological Society, 2014)he impact of the collisional warm-rain microphysical processes on the polarimetric radar variables is quantified using a coupled microphysics?electromagnetic scattering model. A one-dimensional bin-microphysical rain shaft ... -
Satellite Observations of an Unusual Cloud Formation near the Tropopause
(American Meteorological Society, 2014)his paper describes observations of a field of deep and regular cloud formations that spans several hundreds of kilometers at the top of a midlatitude frontal system in the North Pacific storm track. Space-based imagery ... -
Atmospheric Tides in the Latest Generation of Climate Models
(American Meteorological Society, 2014)or atmospheric tides driven by solar heating, the database of climate model output used in the most recent assessment report of the Intergovernmental Panel on Climate Change (IPCC) confirms and extends the authors? earlier ... -
The Convective Boundary Layer in the Terra Incognita
(American Meteorological Society, 2014)umerical simulations of a convective boundary layer (CBL) are performed to investigate model behavior in the terra incognita, also known as the gray zone. The terra incognita of the CBL refers to a range of model grid ... -
Analytical Investigation of Glaciation Time in Mixed-Phase Adiabatic Cloud Volumes
(American Meteorological Society, 2014)laciation in mixed-phase adiabatic cloudy parcels is investigated analytically using two new equations: the equation for coexistence of liquid water and ice and the mass balance equation. The analysis of glaciation time ... -
On the Generation of Roll Vortices due to the Inflection Point Instability of the Hurricane Boundary Layer Flow
(American Meteorological Society, 2014)orizontal roll vortices, or rolls, are frequently observed in the hurricane boundary layer (HBL). Previous studies suggest that these rolls can be generated by the inflection point instability of the HBL flow. In this study ... -
Ice Concentration Retrieval in Stratiform Mixed-Phase Clouds Using Cloud Radar Reflectivity Measurements and 1D Ice Growth Model Simulations
(American Meteorological Society, 2014)easurements of ice number concentration in clouds are important but still pose problems. The pattern of ice development in stratiform mixed-phase clouds (SMCs) offers an opportunity to use cloud radar reflectivity (Ze) ... -
Separating the Mechanisms of Transient Responses to Stratospheric Ozone Depletion–Like Cooling in an Idealized Atmospheric Model
(American Meteorological Society, 2014)revious studies have suggested that Southern Hemisphere (SH) summertime trends in the atmospheric circulation in the second half of the twentieth century are mainly driven by stratospheric ozone depletion in spring. Here, ... -
The Role of Criticality on the Horizontal and Vertical Scales of Extratropical Eddies in a Dry GCM
(American Meteorological Society, 2014)his paper discusses the sensitivity of the horizontal and vertical scales of extratropical eddies when criticality is varied in a dry, primitive-equation, general circulation model. Criticality is a measure of extratropical ... -
Shallow Cumulus Mixing and Subcloud-Layer Responses to Variations in Aerosol Loading
(American Meteorological Society, 2014)he sensitivity of lightly precipitating trade wind shallow cumulus to both aerosol concentration and domain size is investigated using large-eddy simulations (LESs). The mean states of liquid water potential temperature, ... -
Occurrence of Winter Stratospheric Sudden Warming Events and the Seasonal Timing of Spring Stratospheric Final Warming
(American Meteorological Society, 2014)ased on the NCEP?NCAR reanalysis dataset covering 1958?2012, this paper demonstrates a statistically significant relationship between the occurrence of major stratospheric sudden warming events (SSWs) in midwinter and the ... -
A Study of CINDY/DYNAMO MJO Suppressed Phase
(American Meteorological Society, 2015)he diurnal variability and the environmental conditions that support the moisture resurgence of MJO events observed during the Cooperative Indian Ocean Experiment on Intraseasonal Variability (CINDY)/DYNAMO campaign in ...