A summary of work accomplished during the first International Satellite Cloud Climatology Project (ISLSCP) Field Experiment is presented. The Wyoming King Air participated in Intensive Field Campaigns (IFCs) 3 and 4 in 1987, which were committed to a combination of airborne sensible and latent heat flux measurements and soil moisture mappings, with the University of Kansas' X-band side-looking airborne radar (SLAR). A total of 9 flux missions were flown in 1987 using several different flight designs. A critical decision in the first round of aircraft flux analyses, agreed to by all the flux aircraft investigators, was to pass the aircraft data through a high-pass filter prior to the eddy-correlation flux calculations. Several conclusions were drawn from this study: (1) boundary layer (BL) profiles of heat fluxes were usually linear; (2) high-pass filtering applied to the aircraft data did not add to the disagreement between the profile; (3) undersampling at high frequencies could have accounted for as much as a 15 percent underestimate of surface fluxes; (4) disagreement between the aircraft and surface latent heat fluxes changed signs between summer and fall; (5) magnitude and sign of disagreement between aircraft and surface heat fluxes varied systematically with BL depth or height of aircraft profile; and (6) Bowen ratios from both detrended and filtered aircraft data agreed with surface values better for moist, summer cases than for dry cases.


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    Titel :

    Airborne Study of Boundary Layer Heat and Moisture Fluxes for Project Fife


    Beteiligte:
    R. D. Kelly (Autor:in)

    Erscheinungsdatum :

    1992


    Format / Umfang :

    7 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch





    EUROPA - GRAN BRETAGNA - Fife

    Online Contents | 1999


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    Murphy, R.E. / Sellers, P.J. / Hall, F.G. et al. | Elsevier | 1991


    Heat and Moisture Transport in the Atmospheric Boundary Layer

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    An overview of the results of the FIFE-87 and FIFE-89 campaigns

    Murphy, R. E. / Sellers, P. J. / Hall, F. G. et al. | NTRS | 1991