An evaluation of the Ocean Breeze/Dry Gulch dispersion model

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049 ⊔ ⊔ ‡aMAIN
050 ⊔ 4 ‡aQC807.5 ‡b.U55 no.900
074 ⊔ ⊔ ‡a421-E-6 (microfiche)
086 0 ⊔ ‡aD 301.45/4:84-0313
086 0 ⊔ ‡aD 301.45/39:900
088 ⊔ ⊔ ‡aADA 157165
088 ⊔ ⊔ ‡aAFGL TR 84-313
100 1 ⊔ ‡aKunkel, Bruce A.
245 1 3 ‡aAn evaluation of the Ocean Breeze/Dry Gulch dispersion model / ‡cBruce A. Kunkel.
264 ⊔ 1 ‡aHanscom AFB, Massachusetts : ‡bAir Force Geophysics Laboratory, Air Force Systems Command, United States Air Force, ‡c1984.
300 ⊔ ⊔ ‡aiv, 18 pages : ‡billustrations ; ‡c28 cm.
336 ⊔ ⊔ ‡atext ‡btxt ‡2rdacontent
337 ⊔ ⊔ ‡aunmediated ‡bn ‡2rdamedia
338 ⊔ ⊔ ‡avolume ‡bnc ‡2rdacarrier
490 0 ⊔ ‡aEnvironmental research papers ; ‡vno. 900
490 0 ⊔ ‡aAFGL-TR ; ‡v84-0313
500 ⊔ ⊔ ‡aAtmospheric Sciences Division Project 6670.
500 ⊔ ⊔ ‡a"19 November 1984."
500 ⊔ ⊔ ‡aDistributed to depository libraries in microfiche.
500 ⊔ ⊔ ‡aCover title.
504 ⊔ ⊔ ‡aIncludes bibliographical references (pages 17-18).
513 ⊔ ⊔ ‡aScientific. Interim. ‡bOct 83 to Sep 84.
520 ⊔ ⊔ ‡aThe Ocean Breeze-Dry Gulch (OB/DG) atmospheric dispersion model is used extensively by the USAF Air Weather Service for predicting the hazard zone resulting from an accidental toxic chemical spill. This model is an empirical and statistical model derived from the Ocean Breeze, Dry Gulch, and Prairie Grass experiments conducted in the late 50's and early 60's. the USAF Scientific Advisory Board recently recommended that the OB/DG model be replaced with a current state-of-the-art dispersion model. This report represents the first step toward evaluating the OB/DG model and finding a suitable replacement. The hazard distances computed from the OB/DG model for different meteorological conditions are compared with the hazard distances calculated with the Shell Oil co. SPILLS model and a modified version of the model. In the modified Shell model, the discrete Pasquill stability categories are replaced with a continuous stability parameter, and surface roughness is included as a factor in defining the rate of cloud growth. The OB/DG model agrees quite favorably with the modified Shell model except at low wind speeds where it predicts considerably lower distances. The Shell model calculates generally larger distances and much greater fluctuations with wind speed, and therefore does not agree as well with the OB/DG model. The similarity in output between the modified Shell model and the OB/DG model lends support to further consideration of this model as a possible replacement to the OB/DG model.
536 ⊔ ⊔ ‡d62101F, ‡d6670, ‡d14, ‡d06.
538 ⊔ ⊔ ‡aMode of access: Internet.
650 ⊔ 7 ‡aHazardous substances. ‡2fast ‡0(OCoLC)fst00952197
650 ⊔ 7 ‡aDispersion ‡xMathematical models. ‡2fast ‡0(OCoLC)fst00895308
650 ⊔ 0 ‡aHazardous substances.
650 ⊔ 0 ‡aDispersion ‡xMathematical models.
710 2 ⊔ ‡aU.S. Air Force Geophysics Laboratory. ‡bAtmospheric Sciences Division.
730 0 ⊔ ‡aTechnical Report Archive & Image Library (TRAIL)
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