| Evaluation of the maximum wind value and level finder code - :11548 | National Weather Service (NWS)
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Evaluation of the maximum wind value and level finder code
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    "During the past year, the International Civil Aviation Organization (ICAO) has continued to express an interest in adding maximum wind information to the Aviation Digital Forecast code (ADF). In early 1981, as part of NMC's services to the aviation community, we (in SEB) devised a method of calculating, from mandatory level winds, the value of the maximum wind speed and the pressure level at which the maximum wind was found. Documentation may be found in NMC Office Note 229 (Ref. 1). Recently, we tested this method and evaluated the data produced. This report presents statistics obtained from comparisons between calculated maximum wind data and observed max wind data. This report also describes the results of comparisons (10 cases) between experimental charts of maximum wind fields produced at NMC and charts of maximum wind O* fields produced at the British Meteorological Office (Bracknell). However, because we did not receive Bracknell's charts that display the pressure levels of these max winds, comparisons were not attempted. The numerical method used at Bracknell to produce the maximum wind data is briefly described in an article that was presented by W. L. Hughes (Ref. 1) before the ICAO, Area Forecast Panel in Montreal, Canada"--Introduction.

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