Long-Range Travel of Airborne Material Subjected to Dry Deposition

 

Roland R. Draxler and William P. Elliott

 

Atmospheric Environment, Vol. 11, pp. 35-40, 1977

 

Abstract - A finite difference model has been adapted to simulate the effect on plume depletion of dry deposition and diurnal stability variations.  Tests were conducted out to ten days travel time for various deposition velocities. Residence times were twice those obtained by the traditional deposition model suggested by Chamberlain. A diurnal stability cycle changed the residence time for low level releases from 1/5 (nighttime release) to 3 (daytime release) times that obtained in those tests with constant neutral stability.  The stability at the time of release was one of the primary factors that determined the mass remaining airborne, even at several days travel time.

 

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