Results of Intercomparison Flights between the NAE-T-33 and the NCAR Buffalo Atmospheric Research Aircraft (Comparaison des Donnees Recueillies en Vol par les Avions de Recherche Atmospherique T-33 de l'Ean et 'Buffalo' du 'NCAR'),
NATIONAL AERONAUTICAL ESTABLISHMENT OTTAWA (ONTARIO)
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Recent international atmospheric research programs such as BOMEX and IFYGL have been of such a large scale that several aircraft are required to collect data, which, when combined with radiosonde and surface measurements, ultimately form a large internationally-accessible data bank. A fundamental part of the program should be an intercomparison between the measuring aircraft. This report presents results of two such intercomparison flights between the NAE T-33 and NCAR Buffalo atmospheric research aircraft, with the NCAR Sabreliner providing additional data on one of the flights. Data from these flights, which were flown at different altitudes on two days with quite different atmospheric conditions, show generally good agreement, particularly for mesoscale meteorological parameters averaged over the length of a run. Spectra of microscale variables including true gust velocity, heat and momentum flux are compared over a frequency band common to both aircraft. The spectra for longitudinal gusts and temperature fluctuations show excellent agreement between the aircraft, but discrepancies are apparent in the Buffalo vertical gust spectra and resultant fluxes during these flights.
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