Journal of the Atmospheric Sciences: Recent submissions
Now showing items 1721-1740 of 13215
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Applying the Fluctuation–Dissipation Theorem to a Two-Layer Model of Quasigeostrophic Turbulence
(American Meteorological Society, 2015)he fluctuation?dissipation theorem (FDT) provides a means of calculating the response of a dynamical system to a small force by constructing a linear operator that depends only on data from the internal variability of the ... -
Dynamical Response to the QBO in the Northern Winter Stratosphere: Signatures in Wave Forcing and Eddy Fluxes of Potential Vorticity
(American Meteorological Society, 2015)ave?mean flow interactions associated with the Holton?Tan effect (HTE), whereby the tropical quasi-biennial oscillation (QBO) modulates the Northern Hemisphere wintertime stratospheric polar vortex, are studied using the ... -
CORRIGENDUM
(American Meteorological Society, 2015) -
Secondary Circulation of Tropical Cyclones in Vertical Wind Shear: Lagrangian Diagnostic and Pathways of Environmental Interaction
(American Meteorological Society, 2015)his study introduces a Lagrangian diagnostic of the secondary circulation of tropical cyclones (TCs), here defined by those trajectories that contribute to latent heat release in the region of high inertial stability of ... -
Solitary Waves and Undular Bores in a Mesosphere Duct
(American Meteorological Society, 2015)esospheric bores have been observed and measured in the mesopause region near 100-km altitude, where they propagate horizontally along a duct of relatively strong density stratification. Here, a weakly nonlinear theory is ... -
Effective Buoyancy, Inertial Pressure, and the Mechanical Generation of Boundary Layer Mass Flux by Cold Pools
(American Meteorological Society, 2015)he Davies-Jones formulation of effective buoyancy is used to define inertial and buoyant components of vertical force and to develop an intuition for these components by considering simple cases. This decomposition is ... -
Constraining Supersaturation and Transport Processes in a South American Cold-Air Outbreak Using Stable Isotopologues of Water Vapor
(American Meteorological Society, 2015)n situ measurements of water vapor isotopic composition from the subtropical Chilean Andes, supported by mesoscale model simulations and diagnostic analyses, document the processes governing the transport of dry air and ... -
Thermally Driven Diurnally Periodic Wind Signals off the East Coast of China
(American Meteorological Society, 2015)he characteristics of thermally driven diurnally periodic wind signals off the east coast of China are studied using hourly model data for the period June 2006?11 simulated with a mesoscale model. Analysis of these model ... -
Modulation of Midtropospheric CO2 by the South Atlantic Walker Circulation
(American Meteorological Society, 2015)idtropospheric CO2 data from the Atmospheric Infrared Sounder (AIRS) are used in this study to explore the variability of CO2 over the South Atlantic Ocean. It was found that the area-averaged CO2 over the South Atlantic ... -
A Possible Mechanism of Tornadogenesis Associated with the Interaction between a Supercell and an Outflow Boundary without Horizontal Shear
(American Meteorological Society, 2015)sing the insert?restart method developed in this study, tornadogenesis processes associated with the interaction between a supercell and an outflow boundary were investigated. A highly idealized outflow boundary promoted ... -
Numerical Modeling of Multiscale Dynamics at a High Reynolds Number: Instabilities, Turbulence, and an Assessment of Ozmidov and Thorpe Scales
(American Meteorological Society, 2015)high?Reynolds number direct numerical simulation (DNS) is employed to explore the instability and turbulence dynamics accompanying an idealized multiscale flow that approximates such environments observed throughout the ... -
The Signature of Aerosols and Meteorology in Long-Term Cloud Radar Observations of Trade Wind Cumuli
(American Meteorological Society, 2015)he signature of aerosols and meteorology on the development of precipitation from shallow cumuli in the trades is investigated with ground-based lidar and radar remote sensing. The measurements are taken from a cloud ... -
A Parameterization of Convective Dust Storms for Models with Mass-Flux Convection Schemes
(American Meteorological Society, 2015)old pool outflows, generated by downdrafts from moist convection, can generate strong winds and therefore uplift of mineral dust. These so-called haboob convective dust storms occur over all major dust source areas worldwide ... -
Arctic Warming Induced by Tropically Forced Tapping of Available Potential Energy and the Role of the Planetary-Scale Waves
(American Meteorological Society, 2015)ne of the challenging tasks in climate science is to understand the equator-to-pole temperature gradient. The poleward heat flux generated by baroclinic waves is known to be central in reducing the equator-to-pole temperature ... -
Revisiting the Turbulent Prandtl Number in an Idealized Atmospheric Surface Layer
(American Meteorological Society, 2015)ospectral budgets are used to link the kinetic and potential energy distributions of turbulent eddies, as measured by their spectra, to macroscopic relations between the turbulent Prandtl number (Prt) and atmospheric ... -
Correction of Excessive Precipitation over Steep and High Mountains in a GCM: A Simple Method of Parameterizing the Thermal Effects of Subgrid Topographic Variation
(American Meteorological Society, 2015)he excessive precipitation over steep and high mountains (EPSM) in GCMs and mesoscale models is due to a lack of parameterization of the thermal effects of subgrid-scale topographic variation. These thermal effects drive ... -
Formation and Maintenance of the Tropical Cold-Point Tropopause in a Dry Dynamic-Core GCM
(American Meteorological Society, 2015)he formation of the tropical cold-point tropopause (CPT) is examined using a dry primitive equation model driven by the Held?Suarez forcing. Without moist and realistic radiative processes, the dry model successfully ... -
Role of Moist Processes in the Tracks of Idealized Midlatitude Surface Cyclones
(American Meteorological Society, 2015)he effects of moist processes on the tracks of midlatitude surface cyclones are studied by performing idealized mesoscale simulations. In each simulation, a finite-amplitude surface cyclone is initialized on the warm-air ... -
On the Mass-Flux Representation of Vertical Transport in Moist Convection
(American Meteorological Society, 2015)his study investigates to what extent the convective fluxes formulated within the mass-flux framework can represent the total vertical transport of heat and moisture in the cloud layer and whether the same approach can be ... -
An Analytical Solution for Three-Dimensional Sea–Land Breeze
(American Meteorological Society, 2015)ased on the hydrostatic, incompressible Boussinesq equations in the planetary boundary layer (PBL), the three-dimensional sea?land breeze (SLB) circulation has been elegantly expressed as functions of the surface temperature ...