Session 12
	Concentration fluctuations (Parallel with Session 11)
	Organizer: John S. Irwin, U.S. Environmental Protection Agency, Research Triangle Park, NC
	1:30 PM	12.1	Comparisons of a puff trajectory model with real time tracer measurements   Kirk L. Clawson, NOAA/ARL, Idaho Falls, ID; and J. F. Sagendorf and R. G. Carter
		12.2	On the use of one-particle models in the calculation of two-particle statistics of turbulent diffusion   Shuming Du, Earth Tech, Inc., Concord, MA
	1:44 PM	12.3	Concentration fluctuation studies of plume dispersion for different release heights in the convective boundary layer   B. Chowdhury, Univ. Of Kentucky, Lexington, KY; and T. T. H. Tsang
	1:59 PM	12.3a	Validation of HPAC with Porbabilistic Dispersion Trials   Thomas Mazzola, Logican Advanced Technology, Alexandria, VA; and D. Srinivasa and R. I. Sykes
		12.4	Predicting concentration fluctuations with a Puff-Particle Model, and its evaluation using draft ASTM Practice Z6849Z   Peter J. de Haan, Swiss Federal Institute of Technology Zurich, Zurich, Switzerland

Wednesday, 12 January 2000: 1:30 PM-2:30 PM

* - Indicates paper has been withdrawn from meeting

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