Journal of the Atmospheric Sciences: Recent submissions
Now showing items 2061-2080 of 13215
-
Explosive Baroclinic Instability
(American Meteorological Society, 2014)low-order general circulation model contains all the elements of baroclinic instability, including differential heating to drive the mean zonal shear flow against dissipation. Simulations exhibit vacillation ending in ... -
Response of Atmospheric Convection to Vertical Wind Shear: Cloud-System-Resolving Simulations with Parameterized Large-Scale Circulation. Part I: Specified Radiative Cooling
(American Meteorological Society, 2014)t is well known that vertical wind shear can organize deep convective systems and greatly extend their lifetimes. Much less is known about the influence of shear on the bulk properties of tropical convection in statistical ... -
Vertical Mixing and the Temperature and Wind Structure of the Tropical Tropopause Layer
(American Meteorological Society, 2013)ertical mixing may lead to significant momentum and heat fluxes in the tropical tropopause layer (TTL) and these momentum and heat fluxes can force large climatological temperature and zonal wind changes in the TTL. The ... -
Rainfall, Convection, and Latent Heating Distributions in Rapidly Intensifying Tropical Cyclones
(American Meteorological Society, 2014)ropical cyclone (TC) rainfall, convection, and latent heating distributions are compiled from 14 years of Tropical Rainfall Measuring Mission (TRMM) precipitation radar overpasses. The dataset of 818 Northern Hemisphere ... -
Persistent Contrails and Contrail Cirrus. Part II: Full Lifetime Behavior
(American Meteorological Society, 2014)ore than 200 large-eddy simulations of long-lived contrails from several-seconds age until their demise have been performed and their lifetime-integrated behavior has been analyzed. The simulations employ size-resolved ... -
Mesoscale Energy Spectra of the Mei-Yu Front System. Part II: Moist Available Potential Energy Spectra
(American Meteorological Society, 2013)n Part II of this study, a new formulation of the spectral energy budget of moist available potential energy (MAPE) and kinetic energy is derived. Compared to previous formulations, there are three main improvements: (i) ... -
Persistent Contrails and Contrail Cirrus. Part I: Large-Eddy Simulations from Inception to Demise
(American Meteorological Society, 2014)arge-eddy simulations with size-resolved microphysics are used to model persistent aircraft contrails and contrail-induced cirrus from a few wing spans behind the aircraft until their demise after many hours. Schemes for ... -
Further Sensitivities of Orographic Precipitation to Terrain Geometry in Idealized Simulations
(American Meteorological Society, 2014)his study examines how variations to the nondimensional mountain height ? and the horizontal aspect ratio ? of a straight ridge and a concave ridge influence orographic precipitation. An idealized three-dimensional model ... -
Effects of Diabatic Heating and Cooling in the Rapid Filamentation Zone on Structure and Intensity of a Simulated Tropical Cyclone
(American Meteorological Society, 2014)he effects of diabatic heating and cooling in the rapid filamentation zone (RFZ), within which inner rainbands are often active, on tropical cyclone (TC) structure and intensity are investigated based on idealized numerical ... -
The Partial Reflection of Tsunami-Generated Gravity Waves
(American Meteorological Society, 2014)vertical eigenfunction equation is solved to examine the partial reflection and partial transmission of tsunami-generated gravity waves propagating through a height-dependent background atmosphere from the ocean surface ... -
Wave Forcing of the Quasi-Biennial Oscillation in the Max Planck Institute Earth System Model
(American Meteorological Society, 2014)his study investigates the resolved wave forcing of the quasi-biennial oscillation (QBO) in the Max Planck Institute Earth System Model truncated at T63 with 95 vertical levels. The model, which parameterizes unresolved ... -
Stochastic Behavior of Tropical Convection in Observations and a Multicloud Model
(American Meteorological Society, 2013)he aim for a more accurate representation of tropical convection in global circulation models is a long-standing issue. Here, the relationships between large and convective scales in observations and a stochastic multicloud ... -
Thermodynamic and Radiative Structure of Stratocumulus-Topped Boundary Layers
(American Meteorological Society, 2014)tratocumulus-topped boundary layers (STBLs) observed in three different regions are described in the context of their thermodynamic and radiative properties. The primary dataset consists of 131 soundings from the southeastern ... -
A Study of Aerosol Impacts on Clouds and Precipitation Development in a Large Winter Cyclone
(American Meteorological Society, 2014)erosols influence cloud and precipitation development in complex ways due to myriad feedbacks at a variety of scales from individual clouds through entire storm systems. This paper describes the implementation, testing, ... -
Large-Eddy Simulation of Stratified Turbulence. Part II: Application of the Stretched-Vortex Model to the Atmospheric Boundary Layer
(American Meteorological Society, 2014)he buoyancy-adjusted stretched-vortex subgrid-scale (SGS) model is assessed for a number of large-eddy simulations (LESs) corresponding to diverse atmospheric boundary layer conditions. The cases considered are free ... -
A Squall-Line-Like Principal Rainband in Typhoon Hagupit (2008) Observed by Airborne Doppler Radar
(American Meteorological Society, 2014)his study examines the structure and dynamics of Typhoon Hagupit?s (2008) principal rainband using airborne radar and dropsonde observations. The convection in Hagupit?s principal rainband was organized into a well-defined ... -
Hurricane Eyewall Evolution in a Forced Shallow-Water Model
(American Meteorological Society, 2014)forced shallow-water model is used to understand the role of diabatic and frictional effects in the generation, maintenance, and breakdown of the hurricane eyewall potential vorticity (PV) ring. Diabatic heating is ... -
The Role of Interactions between Multiscale Circulations on the Observed Zonally Averaged Zonal Wind Variability Associated with the Madden–Julian Oscillation
(American Meteorological Society, 2014)he mechanisms driving the upper-tropospheric zonal mean intraseasonal zonal wind associated with the Madden?Julian oscillation are examined through budget analysis during boreal winter. To diagnose the role of nonlinear ... -
Multivariate Regression Reconstruction and Its Sampling Error for the Quasi-Global Annual Precipitation from 1900 to 2011
(American Meteorological Society, 2014)his paper provides a multivariate regression method to estimate the sampling errors of the annual quasi-global (75°S?75°N) precipitation reconstructed by an empirical orthogonal function (EOF) expansion. The Global ... -
Differences between Faster versus Slower Components of Convectively Coupled Equatorial Waves
(American Meteorological Society, 2013)his paper describes an analysis of multiyear satellite datasets that subdivide two halves (faster and slower) of the space?time spectral signal peaks corresponding to convectively coupled equatorial waves such as Kelvin ...