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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 ...
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 ...
On the Surface-Convection Feedback during Drought Periods on the Canadian Prairies
Publisher: American Meteorological Society
Abstract: inkages between the terrestrial ecosystem and precipitation play a critical role in regulating regional weather and climate. These linkages can manifest themselves as positive or negative feedback loops, which may either ...
Impacts of Land–Atmosphere Feedbacks on Deep, Moist Convection on the Canadian Prairies
Publisher: American Meteorological Society
Abstract: he purpose of this study was to focus on how anomalies in the normalized difference vegetation index (NDVI; a proxy for soil moisture) over the Canadian Prairies can condition the convective boundary layer (CBL) so as to ...
Spatial Forecasts of Maximum Hail Size Using Prognostic Model Soundings and HAILCAST
Publisher: American Meteorological Society
Abstract: Forecasting the occurrence of hail and the maximum hail size is a challenging problem. This paper investigates the feasibility of producing maps of the forecast maximum hail size over the Canadian prairies using 12-h ...
The Understanding Severe Thunderstorms and Alberta Boundary Layers Experiment (UNSTABLE) 2008
Publisher: American Meteorological Society
Abstract: understorms are a common occurrence in summer on the Canadian prairies, with a large number originating along the Alberta, Canada, foothills, just east of the Rocky Mountains. Most of these storms move eastward to affect ...