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FSCBG: An aerial spray dispersion model for predicting the fate of released material behind aircraft
Author(s) -
Teske Milton E.,
Bowers James F.,
Rafferty James E.,
Barry John W.
Publication year - 1993
Publication title -
environmental toxicology and chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 171
eISSN - 1552-8618
pISSN - 0730-7268
DOI - 10.1002/etc.5620120307
Subject(s) - environmental science , canopy , deposition (geology) , aerial application , wake , atmospheric dispersion modeling , tree canopy , nozzle , atmospheric sciences , meteorology , air pollution , aerospace engineering , ecology , geology , geography , engineering , biology , paleontology , sediment , pesticide
The development of the aerial spray dispersion model FSCBG (Forest Service, Cramer, Barry and Grim) by the USDA Forest Service and the U.S. Army is reviewed. FSCBG predicts the behavior of spray material released through nozzles into the wake of a spray aircraft (helicopter or fixed‐wing), traveling through idealized atmospheric effects, penetrating a canopy and depositing on the ground. FSCBG contains simplified models for the complex flow structure behind aircraft and the mechanisms that affect the fate of aerially released material: downwind drift, evaporation, canopy penetration, and ground and canopy deposition. Model development efforts encompass the areas of spray behavior, aircraft wake effects, meteorological influences, canopy interaction, and deposition. These efforts are supplemented by model validation with field tests. The ability of the model to quantify off‐target spray drift is particularly important.