Author(s)

W.A. Lyons, R.A. Pielke, W.R. Cotton, M. Uliasz, C.J. Tremback, R.L. Walko & J.L. Eastman

Abstract

Invited Paper The applications of new technologies to modeling mesoscale dispersion in coastal zones and complex terrain W.A. Lyons," R.A. Pielke," W.R. Cotton," M. Uliasz," C.J. Tremback," R.L. Walko," J.L. Eastman* PO Box 466. Ft. Collins. Colorado * Department of Atmospheric Sciences, Colorado State University, Ft. Collins, Colorado 80523, USA ABSTRACT Over the past two decades, especially in the regulatory and emergency response arenas, dispersion modelers have tended to use the Gaussian plume approach, or its various segmented plume and puff advection progeny. Such codes often fail in the complex wind and turbulence patterns found in coastal zones and complex terrain. Concurrently, other, more sophisticated approaches were being developed and tested, such as prognostic mesoscale numerical models (MNMs) for simulating complex, three-dimensional, time-dependent meteorological fields. The MNMs can in turn drive Lagrangian particle d

Keywords