An evaluation of an advection fog prediction model

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050 1 4 ‡aQC807.5 ‡b.U55 no.883
074 ‡a421-E-6 (microfiche)
086 0 ‡aD 301.45/39:883
086 0 ‡aD 301.45/4:84-0162
088 ‡aADA 147436
088 ‡aAFGL TR 84-162
100 1 ‡aWeyman, James.
245 1 3 ‡aAn evaluation of an advection fog prediction model / ‡cJames Weyman.
264 1 ‡aHanscom AFB, Massachusetts : ‡bAir Force Geophysics Laboratory, Air Force Systems Command, United States Air Force, ‡c1984.
300 ‡a45 pages : ‡billustrations ; ‡c28 cm.
336 ‡atext ‡btxt ‡2rdacontent
337 ‡aunmediated ‡bn ‡2rdamedia
338 ‡avolume ‡bnc ‡2rdacarrier
490 0 ‡aEnvironmental research papers ; ‡vno. 883
490 0 ‡aAFGL-TR ; ‡v84-0162
500 ‡aAtmospheric Sciences Division Project 6670.
500 ‡a"6 June 1984."
500 ‡aDistributed to depository libraries in microfiche.
500 ‡aCover title.
504 ‡aIncludes bibliographical references (pages 31-32).
513 ‡aScientific final. ‡bFrom Oct 1981 to Sept 1983.
520 ‡aIn response to Air Weather Service requirements, the Air Force Geophysics Lab has been involved in research in the development of mesoscale advection fog prediction techniques. A two-dimensional fog prediction model developed at the Naval Environmental Prediction Research Facility (NEPRF) was selected for evaluation because it can operate on a mini-computer of the size planned for the Air Force's Automated Weather Distribution System (AWDS). Six case studies developed by Calspan Advanced Technology Center were used to test the model's accuracy. These case studies covered a wide range of fog/stratus formation and dissipation stages. Four major weaknesses were identified in the model. The most important was that cloud tops increased in temperature through infrared radiative heat processes rather than decreased. The other weaknesses include lack of solar radiation processes, unreliable treatment of the height of mixed layer during stable conditions, and insufficient handling of vertical motions. The model may have potential in AWDS. However, these weaknesses must first be corrected.
536 ‡d62101F, ‡d6670, ‡d14, ‡d02.
538 ‡aMode of access: Internet.
650 7 ‡aFog ‡xMathematical models. ‡2fast ‡0(OCoLC)fst00928519
650 0 ‡aFog ‡xMathematical models.
710 2 ‡aU.S. Air Force Geophysics Laboratory. ‡bAtmospheric Sciences Division.
730 0 ‡aTechnical Report Archive & Image Library (TRAIL)
899 ‡a39015095140508
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