Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.11765/1807
Influence of stability on the flux-profile relationships for wind speed, Φm, and temperature, φh, for the stable atmospheric boundary layer
Title: Influence of stability on the flux-profile relationships for wind speed, Φm, and temperature, φh, for the stable atmospheric boundary layer
Authors: Yagüe, Carlos ORCID Viana Jiménez, Samuel ORCID RESEARCHERID SCOPUSID Autor AEMETMaqueda, GregorioRedondo, J. M.
Keywords: Wind speed; Temperature; Turbulent transfer
Issue Date: 2006
Publisher: European Geosciences Union
Citation: Nonlinear Processes in Geophysics. 2006, 13(2), p. 185-203
Publisher version: https://dx.doi.org/10.5194/npg-13-185-2006
Abstract: Data from SABLES98 experimental campaign have been used in order to study the influence of stability (from weak to strong stratification) on the flux-profile relationships for momentum, Φm, and heat, Φh. Measurements from 14 thermocouples and 3 sonic anemometers at three levels (5.8, 13.5 and 32 m) for the period from 10 to 28 September 1998 were analysed using the framework of the local-scaling approach (Nieuwstadt, 1984a; 1984b), which can be interpreted as an extension of the Monin-Obukhov similarity theory (Obukhov, 1946). The results show increasing values of Φm and Φh with increasing stability parameter ζ=z/Λ, up to a value of ζ≈1–2, above which the values remain constant. As a consequence of this levelling off in Φm and Φh for strong stability, the turbulent mixing is underestimated when linear similarity functions (Businger et al., 1971) are used to calculate surface fluxes of momentum and heat. On the other hand when Φm and Φh are related to the gradient Richardson number, Ri, a different behaviour is found, which could indicate that the transfer of momentum is greater than that of heat for high Ri. The range of validity of these linear functions is discussed in terms of the physical aspects of turbulent intermittent mixing.
Sponsorship : This research has been funded by the Spanish Ministry of Education and Science (projects CLI97-0343 and CGL2004-03109/CLI).
URI: http://hdl.handle.net/20.500.11765/1807
ISSN: 1023-5809
1607-7946
Appears in Collections:Artículos científicos 2005-2009


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