Journal of the Atmospheric Sciences: Recent submissions
Now showing items 301-320 of 13215
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Vertical Structure and Ice Production Processes of Shallow Convective Postfrontal Clouds over the Southern Ocean in MARCUS. Part I: Observational Study
(American Meteorological Society, 2023) -
Stratospheric Modulation of Tropical Upper-Tropospheric Warming-Induced Circulation Changes in an Idealized General Circulation Model
(American Meteorological Society, 2023) -
Convective and Turbulent Motions in Nonprecipitating Cu. Part III: Characteristics of Turbulence Motions
(American Meteorological Society, 2023) -
Data-Driven Transition Path Analysis Yields a Statistical Understanding of Sudden Stratospheric Warming Events in an Idealized Model
(American Meteorological Society, 2023) -
Multiscale Analysis of Surface Heterogeneity–Induced Convection on Isentropic Coordinates
(American Meteorological Society, 2023) -
Turbulent Kinetic Energy Budgets over Gentle Topography Covered by Forests
(American Meteorological Society, 2022)Large-eddy simulations of flow over a “horizontally” uniform model forest are used to investigate the effects of gentle topography on the turbulent kinetic energy (TKE) budget within the canopy roughness sublayer. Despite ... -
Tangent-Linear and Adjoint Models for the Transfer of Polarized Radiation
(American Meteorological Society, 2022)This study reports the development of tangent-linear and adjoint models for a vector radiative transfer model called TAMU-VRTM. This vector radiative transfer model is further validated in the case of the atmosphere–ocean ... -
Upscale versus “Up-Amplitude” Growth of Forecast-Error Spectra
(American Meteorological Society, 2022)Atmospheric predictability is measured by the average difference (or “error”) within an ensemble of forecasts starting from slightly different initial conditions. The spatial scale of the error field is a fundamental ... -
Disentangling the Influences of Storm-Relative Flow and Horizontal Streamwise Vorticity on Low-Level Mesocyclones in Supercells
(American Meteorological Society, 2022)Sufficient low-level storm-relative flow is a necessary ingredient for sustained supercell thunderstorms and is connected to supercell updraft width. Assuming a supercell exists, the role of low-level storm-relative flow ... -
A Sea Surface–Based Drag Model for Large-Eddy Simulation of Wind–Wave Interaction
(American Meteorological Society, 2022)Monin–Obukhov similarity theory (MOST) is a well-tested approach for specifying the fluxes when the roughness surfaces are homogeneous. For flow over waves (inhomogeneous surfaces), phase-averaged roughness length scales ... -
Low-Level Circulation and Its Coupling with Free-Tropospheric Variability as a Mechanism of Spontaneous Aggregation of Moist Convection
(American Meteorological Society, 2022)The organization of clouds has been widely studied by numerical modeling as an essential problem in climate science. Convective self-aggregation (CSA) occurs in radiative–convective equilibrium when the model domain size ... -
Three-Dimensional Static Instability of Gravity Waves and a Possible Parameterization of the Associated Wave Breaking
(American Meteorological Society, 2022)Parameterizations of subgrid-scale gravity waves (GWs) in atmospheric models commonly involve the description of the dissipation of GWs. Where they dissipate, GWs have an increased effect on the large-scale flow. Instabilities ... -
Dependencies of Four Mechanisms of Secondary Ice Production on Cloud-Top Temperature in a Continental Convective Storm
(American Meteorological Society, 2022)Various mechanisms of secondary ice production (SIP) cause multiplication of numbers of ice particle, after the onset of primary ice. A measure of SIP is the ice enhancement ratio (“IE ratio”) defined here as the ratio ... -
Role of Thermodynamics and Dynamics in the Diurnal Cycle, Propagation, and Progression of Convective Storms in the Eastern Flank of the Indian Monsoon Trough
(American Meteorological Society, 2022)This study investigates the diurnal cycle, propagation, and progression of convective storms (CSs) on the eastern edge of India’s monsoon trough (MT) using 9 years of S-band radar measurements with satellite and reanalysis ... -
Generalization of Atmospheric Nonspherical Particle Size: Interconversions of Size Distributions and Optical Equivalence
(American Meteorological Society, 2022)Atmospheric particles exhibit various sizes and nonspherical shapes, which are factors that primarily determine the physical–optical properties of particles. The “sizes” of nonspherical particles can be specified based on ... -
Markovian Statistical Model of Cloud Optical Thickness. Part I: Theory and Examples
(American Meteorological Society, 2022)We present a generalization of the binary-value Markovian model previously used for statistical characterization of cloud masks to a continuous-value model describing 1D fields of cloud optical thickness (COT). This model ... -
Seasonal Superrotation in Earth’s Troposphere
(American Meteorological Society, 2022)Although Earth’s troposphere does not superrotate in the annual mean, for most of the year—from October to May—the winds of the tropical upper troposphere are westerly. We investigate this seasonal superrotation using ... -
Shallow Cumulus Entrainment Dynamics in a Sheared Environment
(American Meteorological Society, 2022)Vertical wind shear has long been known to tilt convective towers and reduce thermal ascent rates. The purpose of this study is to better understand the physical mechanisms responsible for reduced ascent rates in shallow ... -
Transmission and Reflection of Upward-Propagating Rossby Waves in the Lowermost Stratosphere: Importance of the Tropopause Inversion Layer
(American Meteorological Society, 2022)Extreme stratospheric vortex states are often associated with extreme heat flux and upward wave propagation in the troposphere and lower stratosphere; however, the factors that dictate whether an upward-directed wave in ... -
Variations of Subgrid-Scale Turbulent Fluxes in the Dry Convective Boundary Layer at Gray Zone Resolutions
(American Meteorological Society, 2022)In the numerical gray zone of the convective boundary layer (CBL), the horizontal resolution is comparable to the size of organized convective circulation. As turbulence becomes partially resolved, gridscale variations of ...