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On the Role of Upper Tropospheric Jet Streaks and Leeside Cyclogenesis in the Development of Low-Level Jets in the Great Plains
Publisher: American Meteorological Society
Abstract: A review of 15 cases of low-level jets (LLJ's) which developed in the Great Plains and which have been previously discussed in the literature is presented. The review notes that boundary-layer processes have been emphasized ...
The Possible Influence of Upstream Upper-Level Baroclinic Processes on the Development of the QE II Storm
Publisher: American Meteorological Society
Abstract: An analysis of the QE II storm of 9?11 September 1978 presents evidence for the existence of upper-level baroclinic processes upstream of the rapidly developing cyclone. The analysis shows that a deepening shortwave trough ...
Regional Models: Emerging Research Tools for Synoptic Meteorologists
Publisher: American Meteorological Society
Abstract: Although the development of limited-area, regional-scale numerical-weather prediction models has been driven largely by the practical need to improve quantitative precipitation forecasts, a related motivation has been ...
Winter Forecast Problems Associated with Light to Moderate Snow Events in the Mid-Atlantic States on 14 and 22 February 1986
Publisher: American Meteorological Society
Abstract: Two cases of light and moderate snow events over the Washington, DC area are presented for 14 and 22 February 1986. These cases were selected since the upper-tropospheric and surface features were quite similar, yet ...
Supplement to a Snowfall Impact Scale Derived from Northeast Storm Snowfall Distributions
Publisher: American Meteorological Society
The Computation of Isentropic Atmospheric Trajectories Using a “Discrete Model” Formulation
Publisher: American Meteorological Society
Abstract: An explicit technique for computing atmospheric trajectories, based on Greenspan's discrete model formulation, is presented as an alternative to the commonly used implicit scheme. The method provides an economical means ...
The Coupling of Upper and Lower Tropospheric Jet Streaks and Implications for the Development of Severe Convective Storms
Publisher: American Meteorological Society
Abstract: Transverse circulations in the exit and entrance regions of jet streaks are investigated through numerical simulation, a case study, and an application of the isallobaric wind equation in isentropic coordinates, to study ...
A Comparison of Methods for Computing the Sigma-Coordinate Pressure Gradient Force for Flow over Sloped Terrain in a Hybrid Theta-Sigma Model
Publisher: American Meteorological Society
Abstract: Five methods for computing the pressure gradient force within a sigma domain of a hybrid model are compared for flow over a steeply sloped terrain. The comparison includes pressure gradient calculations determined from a ...
The Synoptic Setting and Possible Energy Sources for Mesoscale Wave Disturbances
Publisher: American Meteorological Society
Abstract: Thirteen case studies of mesoscale wave disturbances (characterized by either a singular wave of depression or wave packets with periods of 1?4 h, horizontal wavelengths of 50?500 km, and surface pressure perturbation ...