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RISA Comparison of the Results of a Two-Dimensional Numerical Simulation of a Tropical Squall Line with Observations
Publisher: American Meteorological Society
Abstract: A comparison of the results of a two-dimensional numerical simulation of a tropical squall line with observations shows good agreement in most respects. The two-dimensional model should provide a valuable research tool for ...
Generation of Infrasound by Evaporating Hydrometeors in a Cloud Model
Publisher: American Meteorological Society
Abstract: The dynamical core of the Regional Atmospheric Modeling System has been tailored to simulate the infrasound of vortex motions and diabatic cloud processes in a convective storm. Earlier studies have shown that the customized ...
Thermally Induced Compression Waves and Gravity Waves Generated by Convective Storms
Publisher: American Meteorological Society
Abstract: A three-dimensional, fully compressible cloud model is used to simulate a convective storm in order to investigate the properties of compression waves and gravity waves induced by latent heat release. Time series of the ...
A Model of a Tropical Squall Line Boundary Layer Wake
Publisher: American Meteorological Society
Abstract: A composite analysis has recently been made of the boundary layer associated with the squall line that moved through the GATE ship array on 12 September 1974. That observational study has motivated a modeling investigation ...
A Comparison of Two-Dimensional and Quasi-Three-Dimensional Simulations of a Tropical Squall Line
Publisher: American Meteorological Society
Abstract: Results of a simulation of a tropical squall line which allows three dimensionality on the scale of convective elements, shows many similarities with those of a two-dimensional simulation. Differences are 1) The ...
A Composite Analysis of the Boundary Layer Accompanying a Tropical Squall Line
Publisher: American Meteorological Society
Abstract: Rawinsonde data from the GARP Atlantic Tropical Experiment (GATE) have been used to prepare a composite of the boundary layer associated with a tropical squall line on 12 September 1974. Soundings from fifteen GATE ships ...
On the Creation and Evolution of Small-Scale Low-Level Vorticity Anomalies during Tropical Cyclogenesis
Publisher: American Meteorological Society
Abstract: AbstractRecent numerical modeling and observational studies indicate the importance of vortical hot towers (VHTs) in the transformation of a tropical disturbance to a tropical depression. It has recently been recognized ...
The Sensitivity of Two-Dimensional Simulations of Tropical Squall Lines to Environmental Profiles
Publisher: American Meteorological Society
Abstract: Two dimensional experiments are carried out to determine the effect of various wind and thermodynamic structure on squall line characteristics. Two ideas concerning the effect of shear are found useful in explaining many ...
Thermally Forced Gravity Waves in an Atmosphere at Rest
Publisher: American Meteorological Society
Abstract: The transient linear response of a quiescent, two-dimensional, nonrotating atmosphere to prescribed heat sources and sinks is investigated. Analytical solutions of the hydrostatic Boussinesq equations are obtained for a ...
A Two-Dimensional Numerical Investigation of the interaction between Sea Breezes and Deep Convection over the Florida Peninsula
Publisher: American Meteorological Society
Abstract: Deep convection initiated by sea breezes over the Florida peninsula is simulated using a two-dimensional nonhydrostatic model. Reasonable agreement is obtained between model results and observations for the three types of ...