Journal of the Atmospheric Sciences: Recent submissions
Now showing items 1741-1760 of 13215
-
Thermally Induced Convective Circulation and Precipitation over an Isolated Volcano
(American Meteorological Society, 2015)ntense rainfall over active volcanoes is known to trigger dangerous volcanic hazards, from remobilizing loose volcanic surface material into lahars or mudflows to initiating explosive activity including pyroclastic flows ... -
Tropical Cyclogenesis due to ITCZ Breakdown: Idealized Numerical Experiments and a Case Study of the Event in July 1988
(American Meteorological Society, 2015)he mechanism of tropical cyclogenesis due to the breakdown of the intertropical convergence zone (ITCZ breakdown) and the structure of associated vortices are studied by numerical experiments using a nonhydrostatic mesoscale ... -
Processes Controlling Precipitation in Shallow, Orographic, Trade Wind Convection
(American Meteorological Society, 2015)sharp reduction in precipitation was observed on the island of Dominica in the Caribbean during a 2011 field campaign when the trade winds weakened and convection transitioned from mechanically to thermally driven. The ... -
Thermally Forced Convection over a Mountainous Tropical Island
(American Meteorological Society, 2015)bservations from the Dominica Experiment (DOMEX) and cloud-resolving numerical simulations are used to study a thermally forced convection event over the Caribbean island of Dominica on 18 April 2011. A clear diurnal cycle ... -
Comparison of Gravity Waves in the Southern Hemisphere Derived from Balloon Observations and the ECMWF Analyses
(American Meteorological Society, 2015)he increase of spatial resolution allows the ECMWF operational model to explicitly resolve a significant portion of the atmospheric gravity wave (GW) field, but the realism of the simulated GW field in the ECMWF analyses ... -
Evaluation of a Heuristic Model for Tropical Cyclone Resilience
(American Meteorological Society, 2015)his work examines the applicability of a previously postulated heuristic model for the temporal evolution of the small-amplitude tilt of a tropical cyclone?like vortex under vertical shear forcing for both a dry and cloudy ... -
The Role of Shallow Cloud Moistening in MJO and Non-MJO Convective Events over the ARM Manus Site
(American Meteorological Society, 2015)bservations from the Atmospheric Radiation Measurement Program (ARM) site at Manus Island in the western Pacific and (re)analysis products are used to investigate moistening by shallow cumulus clouds and by the circulation ... -
Aerosol–Stratocumulus–Radiation Interactions over the Southeast Pacific
(American Meteorological Society, 2015)tmosphere?ocean general circulation models tend to underestimate the solar radiative forcing by stratocumulus over the southeast Pacific, contributing to a warm sea surface temperature (SST) bias. The underestimation may ... -
Validation of Large-Eddy Simulation Methods for Gravity Wave Breaking
(American Meteorological Society, 2015)To reduce the computational costs of numerical studies of gravity wave breaking in the atmosphere, the grid resolution has to be reduced as much as possible. Insufficient resolution of small-scale turbulence demands a ... -
Vertical Wavenumber Spectra of Gravity Waves in the Venus Atmosphere Obtained from Venus Express Radio Occultation Data: Evidence for Saturation
(American Meteorological Society, 2015)y using the vertical temperature profiles obtained by the radio occultation measurements on the European Space Agency (ESA)?s Venus Express, the vertical wavenumber spectra of small-scale temperature fluctuations that are ... -
Reply to “Comments on ‘A Unified Representation of Deep Moist Convection in Numerical Modeling of the Atmosphere. Part I’”
(American Meteorological Society, 2015) -
Stability and Instability Criteria for Idealized Precipitating Hydrodynamics
(American Meteorological Society, 2015)linear stability analysis is presented for fluid dynamics with water vapor and precipitation, where the precipitation falls relative to the fluid at speed VT. The aim is to bridge two extreme cases by considering the full ... -
Association of Convection with the 5-Day Rossby–Haurwitz Wave
(American Meteorological Society, 2015)he seasonality, regionality, and nature of the association between tropical convection and the 5-day wavenumber-1 Rossby?Haurwitz wave are examined. Spectral coherences between daily outgoing longwave radiation (OLR), a ... -
Multiple Regimes of Wind, Stratification, and Turbulence in the Stable Boundary Layer
(American Meteorological Society, 2015)long time series of temporally high-resolution wind and potential temperature data from the 213-m tower at Cabauw in the Netherlands demonstrates the existence of two distinct regimes of the stably stratified nocturnal ... -
Applications of a Moist Nonhydrostatic Formulation of the Spectral Energy Budget to Baroclinic Waves. Part I: The Lower-Stratospheric Energy Spectra
(American Meteorological Society, 2015)he authors investigate the mesoscale dynamics that produce the lower-stratospheric energy spectra in idealized moist baroclinic waves, using the moist nonhydrostatic formulation of spectral energy budget of kinetic energy ... -
The Effects of Explicit versus Parameterized Convection on the MJO in a Large-Domain High-Resolution Tropical Case Study. Part II: Processes Leading to Differences in MJO Development
(American Meteorological Society, 2015)igh-resolution simulations over a large tropical domain (~20°S?20°N, 42°E?180°) using both explicit and parameterized convection are analyzed and compared during a 10-day case study of an active Madden?Julian oscillation ... -
Identification and Analysis of Collisional Breakup in Natural Rain
(American Meteorological Society, 2015)umerous laboratory and numerical studies have been dedicated to understanding collisional breakup as one of the most important processes in rain formation. The present study aims to identify when, in natural rain, collisional ... -
Untangling Microphysical Impacts on Deep Convection Applying a Novel Modeling Methodology
(American Meteorological Society, 2015)icrophysical piggybacking applied previously in shallow convection simulations is employed to highlight microphysical impacts on deep convection. The main idea is to apply two sets of thermodynamic variables, one coupled ... -
Modeling Ice Crystal Aspect Ratio Evolution during Riming: A Single-Particle Growth Model
(American Meteorological Society, 2015)his paper describes and tests a single-particle ice growth model that evolves both ice crystal mass and shape as a result of vapor growth and riming. Columnar collision efficiencies in the model are calculated using a new ... -
Origin and Flow History of Air Parcels in Orographic Banner Clouds
(American Meteorological Society, 2015)anner clouds are clouds in the lee of steep mountains or sharp ridges. Previous work suggests that the main formation mechanism is vertical uplift in the lee of the mountain. On the other hand, little is known about the ...