Journal of the Atmospheric Sciences: Recent submissions
Now showing items 1281-1300 of 13215
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A Numerical Study of Outer Rainband Formation in a Sheared Tropical Cyclone
(American Meteorological Society, 2016)AbstractThe dynamical process of outer rainband formation in a sheared tropical cyclone (TC) is examined in this study using the fully compressible, nonhydrostatic TC model. After the easterly vertical wind shear of 10 m ... -
Inversion of Potential Vorticity Density
(American Meteorological Society, 2017)AbstractInversion of potential vorticity density with absolute vorticity and function ? is explored in ? coordinates. This density is shown to be the component of absolute vorticity associated with the vertical vector of ... -
In Situ Initiation of East Pacific Easterly Waves in a Regional Model
(American Meteorological Society, 2016)AbstractThe in situ generation of easterly waves (EWs) in the east Pacific (EPAC) is investigated using the Weather Research and Forecasting (WRF) Model. The sensitivity of the model to the suppression of EW forcing by ... -
Multiscale Atmosphere–Ocean Interactions and the Low-Frequency Variability in the Equatorial Region
(American Meteorological Society, 2017)AbstractIn the present study a simplified multiscale atmosphere?ocean coupled model for the tropical interactions among synoptic, intraseasonal, and interannual scales is developed. Two nonlinear equatorial ?-plane ... -
Editorial
(American Meteorological Society, 2005) -
Broadening of Cloud Droplet Spectra through Eddy Hopping: Turbulent Adiabatic Parcel Simulations
(American Meteorological Society, 2017)his paper investigates spectral broadening of droplet size distributions through a mechanism referred to as the eddy hopping. The key idea, suggested a quarter century ago, is that droplets arriving at a given location ... -
Coupled Dynamic-Thermodynamic Forcings during Tropical Cyclogenesis: Part II. Axisymmetric Experiments
(American Meteorological Society, 2017)n ensemble of axisymmetric model experiments with simplified physics is used to evaluate the diagnostic framework presented in Part I. The central piece of the framework is understanding what causes decreases in the ratio ... -
Coupled Dynamic-Thermodynamic Forcings during Tropical Cyclogenesis: Part I. Diagnostic Framework
(American Meteorological Society, 2017)diagnostic framework to investigate the role of processes around and during tropical cyclogenesis is presented. The key framework metric is the ratio of bulk differences of moist entropy over differences of angular momentum ... -
Corrigendum
(American Meteorological Society, 2005) -
Local wave activity and the onset of blocking along a potential vorticity front
(American Meteorological Society, 2017)nteraction between a train of transient waves and a diffluent westerly jet is examined using a regional, quasigeostrophic equivalent barotropic model with a (nearly) binary potential vorticity (PV) distribution. Unlike ... -
Large Sensitivity of Near-Surface Vertical Vorticity Development to Heat Sink Location in Idealized Simulations of Supercell-Like Storms
(American Meteorological Society, 2017)n idealized numerical simulations of supercell-like ?pseudostorms? generated by a heat source and sink in a vertically sheared environment, a tornado-like vortex develops if air possessing large circulation about a vertical ... -
The dependence of the predictability of mesoscale convective systems on the horizontal scale and amplitude of initial errors in idealized simulations
(American Meteorological Society, 2017)ecent work has suggested that modest initial relative errors on scales of O(100) km in a numerical weather forecast may exert more control on the predictability of mesoscale convective systems at lead times beyond about 5 ... -
The Role of Inner Core Moisture in Tropical Cyclone Predictability and Practical Forecast Skill
(American Meteorological Society, 2017)rrors in tropical cyclone intensity forecasts are dominated by initial condition errors out to at least a few days. Initialization errors are usually thought of in terms of position and intensity, but here we show that ... -
Using the moist static energy budget to understand storm track shifts across a range of timescales
(American Meteorological Society, 2017)torm tracks shift meridionally in response to forcing across a range of timescales. Here we formulate a moist static energy (MSE) framework for storm track position and use it to understand storm track shifts in response ... -
The role of precipitation in controlling the transition from stratocumulus to cumulus clouds in a northern hemisphere cold-air outbreak
(American Meteorological Society, 2017)ircraft observations in a cold-air outbreak to the north of the United Kingdom are used to examine the boundary layer and cloud properties in an overcast mixed-phase stratocumulus cloud layer and across the transition to ... -
On the Spatial and Temporal Variability of Atmospheric Heat Transport in a Hierarchy of Models
(American Meteorological Society, 2017)he present study analyses the spatial and temporal variability of zonally integrated meridional atmospheric heat transport due to transient eddies in a hierarchy of datasets. These are a highly idealised two-layer model ... -
Journals Embargo Period Reduced to One Year
(American Meteorological Society, 2016) -
Lee mixing and nocturnal structure over gentle topography
(American Meteorological Society, 2017)ur study analyzes measurements from a network of sonic anemometers over gentle topography to investigate the possibility of nocturnal lee-generated turbulence. Although the valley side slopes are less than 6° and extend ... -
Predicting ice shape evolution in a bulk microphysics model.
(American Meteorological Society, 2017)novel bulk microphysics scheme that predicts the evolution of ice properties including aspect ratio (shape), mass, number, size, and density is described, tested, and demonstrated. The scheme is named the Ice-Spheroids ... -
Mechanisms for a PNA-like teleconnection pattern in response to the MJO
(American Meteorological Society, 2017)inematic mechanisms of the Pacific/North American (PNA)-like teleconnection pattern induced by the Madden?Julian oscillation (MJO) is examined using an atmospheric general circulation model (GCM) and a barotropic Rossby ...