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Estimating Spore Release Rates Using a Lagrangian Stochastic Simulation Model
Publisher: American Meteorological Society
Abstract: Practical problems in predicting the spread of plant diseases within and between fields require knowledge of the rate of release Q of pathogenic spores into the air. Many plant pathogenic fungus spores are released into ...
Flow Boundaries in Random-Flight Dispersion Models: Enforcing the Well-Mixed Condition
Publisher: American Meteorological Society
Abstract: Lagrangian stochastic (LS) dispersion models often use trajectory reflection to limit the domain accessible to a particle. It is shown how the well-mixed condition (Thomson) can he expressed in the Chapman-Kolmogorov ...
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 ...
Surface Delays for Gases Dispersing in the Atmosphere
Publisher: American Meteorological Society
Abstract: When a particle descends beneath the (nominal) lower boundary of the atmosphere, it may remain there for some time τ before it reemerges into the (resolved) flow. In particle trajectory models, τ is the random duration of ...
Backward-Time Lagrangian Stochastic Dispersion Models and Their Application to Estimate Gaseous Emissions
Publisher: American Meteorological Society
Abstract: ?Backward? Lagrangian stochastic models calculate an ensemble of fluid element (particle) trajectories that are distinguished by each passing through an observation point. As shown, they can be faster and more flexible in ...
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 ...