Field Measurement and Model Evaluation Program for Assessment of the Environmental Effects of Military Smokes
Abstract
This report summarizes the results achieved to date on field measurements and modeling relating to military smokes. Field measurements on the chemical characterization of smokes and their dispersion characteristics were studied at three sites: (a) Dugway Proving Ground, Utah (flat terrain), (b) Camp Atterbury near Columbus, Indiana (flat terrain), and (c) the Meadowbrook site (complex terrain) in Red Bluff, California. Smoke measurements typically included particle size distributions, average concentrations (or dosages), concentration fluctuations, vapor/particulate phase partitioning, and deposition. Airborne concentrations were measured from 25 - 2500m downwind. Sample experimental results for fog oil include the following: (a) droplet sizes have a mass median diameter of about 1 micron, and (b) the vapor phase is essentially nonexistent with a mass contribution of less than 1% as compared with 99% contribution of the particulate phase. For the purposes of model verification for fog-oil smoke, there are three data sets from the Dugway tests, four data sets from Camp Atterbury and eight data sets from the Meadowbrook site. All fog oil data were taken under convective conditions except for seven data sets at Meadowbrook which were acquired under stable conditions. For HC, there were five field surveys carried out at Camp Atterbury, all under convective conditions. The model verification results show that the four Gaussian puff models tested can predict within a factor of 2-3 under convective conditions to about 250m in flat terrain.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1989
- Accession Number
- ADA216054
Entities
People
- A. J. Policastro
- D. M. Maloney
- G. E. Devaull
- J. C. Liljegren
- W. E. Dunn