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Near-surface turbulent fluxes in stable stratification: Calculation techniques for use in general-circulation models

  1. S. S. Zilitinkevich1,*,
  2. V. L. Perov2,
  3. J. C. King3

Article first published online: 29 DEC 2006

DOI: 10.1002/qj.200212858309

Issue

Quarterly Journal of the Royal Meteorological Society

Quarterly Journal of the Royal Meteorological Society

Volume 128, Issue 583, pages 1571–1587, July 2002 Part A

Additional Information

How to Cite

Zilitinkevich, S. S., Perov, V. L. and King, J. C. (2002), Near-surface turbulent fluxes in stable stratification: Calculation techniques for use in general-circulation models. Q.J.R. Meteorol. Soc., 128: 1571–1587. doi: 10.1002/qj.200212858309

Author Information

  1. 1

    Uppsala University, Sweden

  2. 2

    Swedish Meteorological and Hydrological Institute, Sweden

  3. 3

    British Antarctic Survey, UK

*Department of Earth Sciences–Meteorology (MIUU), Uppsala University, Villavägen 16, SE-752 36 Uppsala, Sweden.

Publication History

  1. Issue published online: 29 DEC 2006
  2. Article first published online: 29 DEC 2006
  3. Manuscript Revised: 5 FEB 2002
  4. Manuscript Received: 28 MAR 2001

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Keywords:

  • Climate/weather modelling;
  • Correction functions;
  • Drag coefficient;
  • Heat/mass transfer coefficients;
  • Surface-layer parametrization

Abstract

Practically oriented flux-calculation techniques based on correction functions to the neutral drag and heat/mass transfer coefficients are further developed. In the traditional formulation, the correction functions depend only on the bulk Richardson number. However, data from measurements of turbulent fluxes and mean profiles in stable stratification over different sites exhibit too strong variability in this type of dependencies. Indirect evidence from climate and weather prediction modelling also shows that the traditional flux-calculation technique is not sufficiently advanced. It is conceivable that other mechanisms besides the surface-layer stratification and, therefore, other arguments besides the bulk Richardson number must be considered. The proposed technique includes a newly discovered effect of the static stability in the free atmosphere on the surface-layer scaling and accounts for the general essential difference between the roughness lengths for momentum and scalars. Besides bulk Richardson number, recommended correction functions depend on one more stability parameter, involving the Brunt–Väisälä frequency in the free atmosphere, and on the roughness lengths. Copyright © 2002 Royal Meteorological Society.

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