Journal of the Atmospheric Sciences: Recent submissions
Now showing items 441-460 of 13215
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Linking Equatorial African Precipitation to Kelvin Wave Processes in the CP4-Africa Convection-Permitting Regional Climate Simulation
(2022)Observational studies have shown the link between convectively coupled Kelvin waves (CCKWs) and eastward-propagating rainfall anomalies. We explore the mechanisms in which CCKWs modulate the propagation of precipitation ... -
Does More Moisture in the Atmosphere Lead to More Intense Rains?
(2022)It is typically interpreted that more moisture in the atmosphere leads to more intense rains. This notion may be supported, for example, by taking a scatterplot between rain and column precipitable water. The present paper ... -
Coupling of Wind and Potential Temperature in an Ekman Model in the Stratified Atmospheric Boundary Layer
(2022)A linear Ekman model in the stratified atmospheric boundary layer (ABL) is proposed based on the steady-state version of the linearized three-dimensional primitive equations with the inclusion of the vertical diffusivity. ... -
Ensemble-Based Gravity Wave Parameter Retrieval for Numerical Weather Prediction
(2022)Gravity wave (GW) momentum and energy deposition are large components of the momentum and heat budgets of the stratosphere and mesosphere, affecting predictability across scales. Since weather and climate models cannot ... -
Dynamics of the Cloud–Environment Interface and Turbulence Effects in an LES of a Growing Cumulus Congestus
(2022)A giga-large-eddy simulation of a cumulus congestus has been performed with a 5-m resolution to examine the fine-scale dynamics and mixing on its edges. At 5-m resolution, the dynamical production of subgrid turbulence ... -
Masthead
(2022) -
Observed and Modeled Mountain Waves from the Surface to the Mesosphere near the Drake Passage
(2022)Four state-of-the-science numerical weather prediction (NWP) models were used to perform mountain wave (MW)-resolving hindcasts over the Drake Passage of a 10-day period in 2010 with numerous observed MW cases. The Integrated ... -
Quasi-Idealized Numerical Simulations of Processes Involved in Orogenic Convection Initiation over the Sierras de Córdoba
(2022)The Sierras de Córdoba (SDC) range in Argentina is a hotspot of deep moist convection initiation (CI). Radar climatology indicates that 44% of daytime CI events that occur near the SDC in spring and summer seasons and that ... -
The Response of the Polar Vortex to Tropospheric Temperature Eddies in an Idealized General Circulation Model
(2022)A dry-core idealized general circulation model with a stratospheric polar vortex in the Northern Hemisphere is run with a combination of simplified topography and imposed tropospheric temperature perturbations, each located ... -
Large-Eddy Simulations of Convection Initiation over Heterogeneous, Low Terrain
(2022)Large-eddy simulations are conducted to investigate and physically interpret the impacts of heterogeneous, low terrain on deep-convection initiation (CI). The simulations are based on a case of shallow-to-deep convective ... -
Coalescence and Secondary Ice Development in Cumulus Congestus Clouds
(2022)Understanding ice development in cumulus congestus (CuCg) clouds, which are ubiquitous globally, is critical for improving our knowledge of cloud physics, precipitation and climate prediction models. Results presented here ... -
Theory of Parcel Vorticity Evolution in Supercell-Like Flows
(2022)In a prior paper, insights into tornadogenesis in supercell storms were gained by discovering analytical formulas for vorticity variations along streamlines in idealized, steady, frictionless, isentropic inflows of dry air ... -
Turbulent Parameters in the Middle Atmosphere: Theoretical Estimates Deduced from a Gravity Wave–Resolving General Circulation Model
(2022)We present a scaling analysis for the stratified turbulent and small-scale turbulent regimes of atmospheric flow with emphasis on the mesosphere. We distinguish rotating-stratified macroturbulence turbulence (SMT), stratified ... -
Corrigendum
(2022)This corrigendum corrects the time-averaged plots of the kinetic energy transfer terms in our published article. -
Effects of Surface Fluxes on Ventilation Pathways and the Intensification of Hurricane Michael (2018)
(2022)This study investigates the effects of surface fluxes on ventilation pathways and the development of Hurricane Michael (2018), and is a real-case comparison to previous idealized modeling studies that investigate ventilation. ... -
Supersaturation Variability from Scalar Mixing: Evaluation of a New Subgrid-Scale Model Using Direct Numerical Simulations of Turbulent Rayleigh–Bénard Convection
(2022)Supersaturation fluctuations in the atmosphere are critical for cloud processes. A nonlinear dependence on two scalars—water vapor and temperature—leads to different behavior than single scalars in turbulent convection. ... -
The Detection, Genesis, and Modeling of Turbulence Intermittency in the Stable Atmospheric Surface Layer
(2022)Intermittent transitions between turbulent and nonturbulent states are ubiquitous in the stable atmospheric surface layer (ASL). Data from two field experiments in Utqiaġvik, Alaska, and from direct numerical simulations ... -
Using Ensemble Data Assimilation to Explore the Environmental Controls on the Initiation and Predictability of Moist Convection
(2022)Atmospheric deep moist convection has emerged as one of the most challenging topics for numerical weather prediction, due to its chaotic process of development and multiscale physical interactions. This study examines the ... -
Updraft Maintenance and Axisymmetrization during Secondary Eyewall Formation in a Model Simulation of Hurricane Matthew (2016)
(2022)As a follow-on to a previous study on secondary eyewall formation (SEF) in a simulation of Hurricane Matthew (2016), this study investigates the emergence and maintenance of an asymmetric rainband updraft region that leads ... -
On Moist Potential Temperatures and Their Ability to Characterize Differences in the Properties of Air Parcels
(2022)A framework is introduced to compare moist “potential” temperatures. The equivalent potential temperature θe, the liquid water potential temperature θℓ, and the entropy potential temperature θs are all shown to be potential ...