Journal of the Atmospheric Sciences: Recent submissions
Now showing items 1841-1860 of 13215
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On the Local Available Energetics in a Moist Compressible Atmosphere
(American Meteorological Society, 2015)new derivation of local available energetics for a fully compressible, nonhydrostatic, moist atmosphere is presented. The available energetics is defined relative to an arbitrary dry reference state in hydrostatic balance ... -
A Divergence-Form Wave-Induced Pressure Inherent in the Extension of the Eliassen–Palm Theory to a Three-Dimensional Framework for All Waves at All Latitudes
(American Meteorological Society, 2015)lassical theory concerning the Eliassen?Palm relation is extended in this study to allow for a unified treatment of midlatitude inertia?gravity waves (MIGWs), midlatitude Rossby waves (MRWs), and equatorial waves (EQWs). ... -
Turbulent Erosion of Persistent Cold-Air Pools: Numerical Simulations
(American Meteorological Society, 2014)igh-resolution idealized numerical simulations are used to examine the turbulent removal of cold-air pools commonly observed in mountain valleys and basins. A control simulation with winds aloft increasing from 0.5 to 20 ... -
Evolution of Tsunami-Induced Internal Acoustic–Gravity Waves
(American Meteorological Society, 2015)he authors present an idealized theoretical and numerical study of tsunami-induced internal waves in the atmosphere. These are gravity waves modified by acoustic effects that can propagate rapidly from the ocean surface ... -
Interannual Variations of Stratospheric Water Vapor in MLS Observations and Climate Model Simulations
(American Meteorological Society, 2014)y analyzing the almost-decade-long record of water vapor measurements from the Microwave Limb Sounder (MLS) instrument on the NASA Aura satellite and by detailed diagnostic analysis of the results from state-of-the art ... -
The Seasonal Cycle of Lower-Tropospheric Gravity Wave Activity at Davis, Antarctica (69°S, 78°E)
(American Meteorological Society, 2015)VHF wind-profiling radar located at Davis in coastal East Antarctica (69°S, 78°E) collected data from September 2009 to August 2011 in the lower troposphere. Gravity wave activity is quantified using the radar?s wind ... -
Influence of Mesoscale Topography on Tropical Cyclone Tracks: Further Examination of the Channeling Effect
(American Meteorological Society, 2015)bservations have documented typhoons experiencing pronounced track deflection before making landfall in Taiwan. In this study, idealized full-physics model experiments are conducted to assess the orographic influence on ... -
Quantifying the Hygroscopic Growth of Marine Boundary Layer Aerosols by Satellite-Based and Buoy Observations
(American Meteorological Society, 2014)n this study, collocated satellite and buoy observations as well as satellite observations over an extended region during 2006?10 were used to quantify the humidity effects on marine boundary layer (MBL) aerosols. Although ... -
Reconstructing Sea Level Pressure Variability via a Feature Tracking Approach
(American Meteorological Society, 2014)he aim of this paper is to quantify the contribution of synoptic transients to the full spectrum of space?time variability of sea level pressure (SLP) in middle latitudes. In previous work by the authors it was shown that ... -
Transient Tropical Diabatic Heating and the Seasonal-Mean Response to ENSO
(American Meteorological Society, 2015)oreal winter simulations of the Community Atmospheric Model, version 4.0, were carried out using observed sea surface temperature (SST) fields from the three El Niño events of 1982/83, 1991/92, and 1997/98 [control (CTL) ... -
Effect of Aerosols on Freezing Drops, Hail, and Precipitation in a Midlatitude Storm
(American Meteorological Society, 2015)midlatitude hail storm was simulated using a new version of the spectral bin microphysics Hebrew University Cloud Model (HUCM) with a detailed description of time-dependent melting and freezing. In addition to size ... -
Lagrangian Investigation of the Precipitation Efficiency of Convective Clouds
(American Meteorological Society, 2014)he precipitation efficiency of cumulus congestus clouds is investigated with a new Lagrangian particle framework for large-eddy simulations. The framework is designed to track particles representative of individual water ... -
Diagnostic Comparison of Tropospheric Blocking Events with and without Sudden Stratospheric Warming
(American Meteorological Society, 2015)ropospheric blocking events over the Northern Hemisphere during 1980?2012 were composited and contrasted according to whether they coincided in time with a sudden stratospheric warming (SSW). Those that coincided with an ... -
Baroclinic Eddies and the Extent of the Hadley Circulation: An Idealized GCM Study
(American Meteorological Society, 2015)he Hadley circulation has widened over the past 30 years. This widening has been qualitatively reproduced in general circulation model (GCM) simulations of a warming climate. Comprehensive GCM studies suggest this widening ... -
Response of a Simulated Hurricane to Misalignment Forcing Compared to the Predictions of a Simple Theory
(American Meteorological Society, 2014)his paper compares the tilt dynamics of a mature tropical cyclone simulated with a conventional cloud model to reduced modeling results and theoretical predictions. The primary experiment involves a tropical cyclone of ... -
Impacts of Cloud Droplet–Nucleating Aerosols on Shallow Tropical Convection
(American Meteorological Society, 2015)ow-level warm-phase clouds cover a substantial portion of Earth?s oceans and play an important role in the global water and energy budgets. The characteristics of these clouds are controlled by the large-scale environment, ... -
The Sensitivity of Hurricane Irene to Aerosols and Ocean Coupling: Simulations with WRF Spectral Bin Microphysics
(American Meteorological Society, 2015)urricane Irene (2011) moved northward along the eastern coast of the United States and was expected to cause severe wind and flood damage. However, the hurricane weakened much faster than was predicted. Moreover, the minimum ... -
Are Eyewall Replacement Cycles Governed Largely by Axisymmetric Balance Dynamics?
(American Meteorological Society, 2014)he authors question the widely held view that radial contraction of a secondary eyewall during an eyewall replacement cycle is well understood and governed largely by the classical theory of axisymmetric balance dynamics. ... -
Effects of Horizontal Geometrical Spreading on the Parameterization of Orographic Gravity Wave Drag. Part II: Analytical Solutions
(American Meteorological Society, 2015)ffects of horizontal geometrical spreading on the amplitude variation with height of linear three-dimensional hydrostatic orographic gravity waves (OGWs) are quantified via relevant simplifications to the governing transform ... -
Effects of Horizontal Geometrical Spreading on the Parameterization of Orographic Gravity Wave Drag. Part I: Numerical Transform Solutions
(American Meteorological Society, 2015)umerical transform solutions for hydrostatic gravity waves generated by both uniform and sheared flow over elliptical obstacles are used to quantify effects of horizontal geometrical spreading on amplitude evolution with ...