Single-Column Model Intercomparison for a Stably Stratified Atmospheric Boundary Layer

J. Cuxart, A.A.M. Holtslag, R.J. Beare, E. Bazile, A. Beljaars, A. Cheng, L. Conangla, M.B. Ek, F. Freedman, R. Hamdi, A. Kerstein, H. Kitagawa, G. Lenderink, D. Lewellen, J. Mailhot, T. Mauritsen, V. Perov, G. Schayes, G.J. Steeneveld, G. SvenssonP. Taylor, W. Weng, S. Wunsch, K.M. Xu

Research output: Contribution to journalArticleAcademicpeer-review

224 Citations (Scopus)

Abstract

The parameterization of the stably stratified atmospheric boundary layer is a difficult issue, having a significant impact on medium-range weather forecasts and climate integrations. To pursue this further, a moderately stratified Arctic case is simulated by nineteen single-column turbulence schemes. Statistics from a large-eddy simulation intercomparison made for the same case by eleven different models are used as a guiding reference. The single-column parameterizations include research and operational schemes from major forecast and climate research centres. Results from first-order schemes, a large number of turbulence kinetic energy closures, and other models were used. There is a large spread in the results; in general, the operational schemes mix over a deeper layer than the research schemes, and the turbulence kinetic energy and other higher-order closures give results closer to the statistics obtained from the large-eddy simulations. The sensitivities of the schemes to the parameters of their turbulence closures are partially explored
Original languageEnglish
Pages (from-to)273-303
Number of pages31
JournalBoundary-Layer Meteorology
Volume118
Issue number2
DOIs
Publication statusPublished - 2006

Keywords

  • turbulence closure-model
  • large-eddy simulation
  • part i
  • scheme
  • parameterization
  • formulation
  • diffusion
  • dynamics
  • surfaces
  • system

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