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A Historical Review of Cumulus Entrainment Studies
Publisher: American Meteorological Society
Abstract: A review of the history of studies on cumulus entrainment with the emphasis on the most recent developments is presented.
The Sensitivity of Precipitation to Circulation Details. Part II: Mesoscale Modeling
Publisher: American Meteorological Society
Abstract: A base case and the best time-coherent, regional analog to that case, identified in Part I, were analyzed to determine the precise mechanisms responsible for the differences in precipitation amounts. This analysis was ...
Forecasting Tornadic Thunderstorm Potential in Alberta Using Environmental Sounding Data. Part I: Wind Shear and Buoyancy
Publisher: American Meteorological Society
Abstract: This study investigates, for Alberta, Canada, whether observed sounding parameters such as wind shear and buoyant energy can be used to help distinguish between thunderstorms with significant (F2?F5) tornadoes, thunderstorms ...
Forecasting Tornadic Thunderstorm Potential in Alberta Using Environmental Sounding Data. Part II: Helicity, Precipitable Water, and Storm Convergence
Publisher: American Meteorological Society
Abstract: Sounding parameters are examined to determine whether they can help distinguish between Alberta, Canada, severe thunderstorms that spawn significant tornadoes (F2?F4), weak tornadoes (F0?F1), or nontornadic severe storms ...
Explicit Forecasts of Hail Occurrence and Expected Hail Size Using the GEM–HAILCAST System with a Rainfall Filter
Publisher: American Meteorological Society
Abstract: HAILCAST is a numerical model developed specifically to predict the size of the largest hail reaching the ground. It consists of a steady-state cloud model combined with a time-dependent hailstone growth model. The regional ...
Transport of Atmospheric Moisture during Three Extreme Rainfall Events over the Mackenzie River Basin
Publisher: American Meteorological Society
Abstract: Lagrangian trajectories were computed for three extreme summer rainfall events (with rainfall exceeding 100 mm) over the southern Mackenzie River basin to test the hypothesis that the low-level moisture feeding these ...
WRF Model Simulation of Two Alberta Flooding Events and the Impact of Topography
Publisher: American Meteorological Society
Abstract: his study examines simulations of two flooding events in Alberta, Canada, during June 2005, made using the Weather Research and Forecasting Model (WRF). The model was used in a manner readily accessible to nonmeteorologists ...
Modeling Maximum Hail Size in Alberta Thunderstorms
Publisher: American Meteorological Society
Abstract: A one-dimensional steady-state cloud model was combined with a time-dependent hail growth model to predict the maximum hailstone size on the ground. Model runs were based on 160 proximity soundings recorded within the ...
Temperature, Precipitation, and Lightning Modification in the Vicinity of the Athabasca Oil Sands
Publisher: American Meteorological Society
Abstract: he Athabasca oil sands development in northeast Alberta, Canada, has disturbed more than 500 km2 of boreal forest through surface mining and tailings ponds development. In this paper, the authors compare the time series ...