caa a22 4500 475777433 CHVBK 20180406123635.0 cr unu---uuuuu 170329e20000301xx s 000 0 eng 10.1023/A:1002452529672 doi (NATIONALLICENCE)springer-10.1023/A:1002452529672 Convective Profile Constants Revisited [Elektronische Daten] [A. Grachev, C. Fairall, E. Bradley] This paper examines the interpolation betweenBusinger-Dyer (Kansas-type) formulae,ϕu = (1 -1 6ζ )-1/4 andϕt = (1 - 16ζ )-1/2, and free convection forms. Based on matching constraints, the constants, au and at, in the convective flux-gradient relations, ϕu = (1 - auζ )-1/3 and ϕt = (1 - atζ )-1/3, are determined. It isshown that au and at cannot be completely independent if convective forms are blended with theKansas formulae. In other words, these relationships already carryinformation about au and at. This follows because the Kansas relations cover a wide stability range (up to ζ = - 2), which includes a lower part of the convective sublayer (about 0.1 < - ζ < 2). Thus, there is a subrange where both Kansas and convective formulae are valid. Matching Kansas formulae and free convection relations within thesubrange 0.1 < -ζ < 2 and independently smoothing ofthe blending function are used to determine au and at. The values au = 10 for velocity and at = 34for scalars (temperature and humidity) give a good fit. This new approacheliminates the need for additional independent model constants and yields a'ssmooth' blending between Kansas and free-convection profileforms in the COARE bulk algorithm. Kluwer Academic Publishers, 2000 Monin-Obukhov theory nationallicence Flux-gradient relations nationallicence Businger-Dyer formulae nationallicence Free convection nationallicence Grachev A. Cooperative Institute for Research in Environmental Sciences, University of Colorado, U.S.A. aut Fairall C. Environmental Technology Laboratory, NOAA, 325 Broadway, R/ET7, 80303-3328, Boulder, Colorado, U.S.A. aut Bradley E. CSIRO Land and Water, GPO Box 1666, 2601, Canberra, ACT, Australia aut Boundary-Layer Meteorology Kluwer Academic Publishers 94/3(2000-03-01), 495-515 0006-8314 94:3<495 2000 94 10546 https://doi.org/10.1023/A:1002452529672 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1002452529672 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Grachev A. Cooperative Institute for Research in Environmental Sciences, University of Colorado, U.S.A aut NATIONALLICENCE 700 1- Fairall C. Environmental Technology Laboratory, NOAA, 325 Broadway, R/ET7, 80303-3328, Boulder, Colorado, U.S.A aut NATIONALLICENCE 700 1- Bradley E. CSIRO Land and Water, GPO Box 1666, 2601, Canberra, ACT, Australia aut NATIONALLICENCE 773 0- Boundary-Layer Meteorology Kluwer Academic Publishers 94/3(2000-03-01), 495-515 0006-8314 94:3<495 2000 94 10546 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer