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Variational Assimilation of VAS Data into a Mesoscale Model; Assimilation Method and Sensitivity Experiments
Publisher: American Meteorological Society
Abstract: A variational method has been developed to assimilate VAS temperature and moisture gradient information into a mesoscale model. A series of experiments were conducted to test the sensitivity of both adiabatic and diabatic ...
Further Comparison of Two Synoptic Surface Wind and Pressure Analysis Methods
Publisher: American Meteorological Society
Abstract: The geostrophic stream and potential functions of Sangster and the derived flat pressure field of Pielke and Cram are further compared. A simple numerical experiment with an idealized mountain-atmosphere system compares ...
An Alternate Procedure for Analyzing Surface Geostraphic Winds and Pressure over Elevated Terrain
Publisher: American Meteorological Society
Abstract: A methodology to analyze a flat surface geostrophic wind and pressure is presented which eliminates the arbitrariness of the standard reduction of surface pressure to mean sea level. The procedure utilizes a surface ...
Numerical Simulation and Analysis of a Prefrontal Squall Line. Part I: Observations and Basic Simulation Results
Publisher: American Meteorological Society
Abstract: An observational and numerical study of the squall line that occurred on 17?18 June 1978 is presented. This squall line was initially triggered by the strong surface convergence along a cold front and stretched from Illinois ...
Numerical Simulation and Analysis of a Prefrontal Squall Line. Part II: Propagation of the Squall Line as an Internal Gravity Wave
Publisher: American Meteorological Society
Abstract: A numerical study of the squall line that occurred on 17?18 June 1978 was described in Part I of this paper. The squall line was collocated with a surface front during its initial development (at 0000 UTC 18 June 1978), ...
The Use and Analysis of Profiler Winds to Derive Mesoscale Height and Temperature Fields: Simulation and Real-Data Experiments
Publisher: American Meteorological Society
Abstract: Conventional synoptic rawinsonde data do not have a fine enough temporal or spatial resolution to accurately resolve mesoscale features. Profiling networks are one potential source of these data although they provide only ...