Abstract
Results are presented from the first intercomparison of large-eddy simulation (LES) models for the stable boundary layer (SBL), as part of the Global Energy and Water Cycle Experiment Atmospheric Boundary Layer Study initiative. A moderately stable case is used, based on Arctic observations. All models produce successful simulations, in as much as they generate resolved turbulence and reflect many of the results from local scaling theory and observations. Simulations performed at 1-m and 2-m resolution show only small changes in the mean profiles compared to coarser resolutions. Also, sensitivity to subgrid models for individual models highlights their importance in SBL simulation at moderate resolution (6.25 m). Stability functions are derived from the LES using typical mixing lengths used in numerical weather prediction (NWP) and climate models. The functions have smaller values than those used in NWP. There is also support for the use of K-profile similarity in parametrizations. Thus, the results provide improved understanding and motivate future developments of the parametrization of the SBL.
| Original language | English |
|---|---|
| Pages (from-to) | 247-272 |
| Number of pages | 26 |
| Journal | Boundary-Layer Meteorology |
| Volume | 118 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2006 Feb 1 |
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All Science Journal Classification (ASJC) codes
- Atmospheric Science
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An intercomparison of large-eddy simulations of the stable boundary layer. / Beare, Robert J.; Macvean, Malcolm K.; Holtslag, Albert A M; Cuxart, Joan; Esau, Igor; Golaz, Jean Christophe; Jimenez, Maria A.; Khairoutdinov, Marat; Kosovic, Branko; Lewellen, David; Lund, Thomas S.; Lundquist, Julie K.; McCabe, Anne; Moene, Arnold F.; Noh, Yign; Raasch, Siegfried; Sullivan, Peter.
In: Boundary-Layer Meteorology, Vol. 118, No. 2, 01.02.2006, p. 247-272.Research output: Contribution to journal › Article
TY - JOUR
T1 - An intercomparison of large-eddy simulations of the stable boundary layer
AU - Beare, Robert J.
AU - Macvean, Malcolm K.
AU - Holtslag, Albert A M
AU - Cuxart, Joan
AU - Esau, Igor
AU - Golaz, Jean Christophe
AU - Jimenez, Maria A.
AU - Khairoutdinov, Marat
AU - Kosovic, Branko
AU - Lewellen, David
AU - Lund, Thomas S.
AU - Lundquist, Julie K.
AU - McCabe, Anne
AU - Moene, Arnold F.
AU - Noh, Yign
AU - Raasch, Siegfried
AU - Sullivan, Peter
PY - 2006/2/1
Y1 - 2006/2/1
N2 - Results are presented from the first intercomparison of large-eddy simulation (LES) models for the stable boundary layer (SBL), as part of the Global Energy and Water Cycle Experiment Atmospheric Boundary Layer Study initiative. A moderately stable case is used, based on Arctic observations. All models produce successful simulations, in as much as they generate resolved turbulence and reflect many of the results from local scaling theory and observations. Simulations performed at 1-m and 2-m resolution show only small changes in the mean profiles compared to coarser resolutions. Also, sensitivity to subgrid models for individual models highlights their importance in SBL simulation at moderate resolution (6.25 m). Stability functions are derived from the LES using typical mixing lengths used in numerical weather prediction (NWP) and climate models. The functions have smaller values than those used in NWP. There is also support for the use of K-profile similarity in parametrizations. Thus, the results provide improved understanding and motivate future developments of the parametrization of the SBL.
AB - Results are presented from the first intercomparison of large-eddy simulation (LES) models for the stable boundary layer (SBL), as part of the Global Energy and Water Cycle Experiment Atmospheric Boundary Layer Study initiative. A moderately stable case is used, based on Arctic observations. All models produce successful simulations, in as much as they generate resolved turbulence and reflect many of the results from local scaling theory and observations. Simulations performed at 1-m and 2-m resolution show only small changes in the mean profiles compared to coarser resolutions. Also, sensitivity to subgrid models for individual models highlights their importance in SBL simulation at moderate resolution (6.25 m). Stability functions are derived from the LES using typical mixing lengths used in numerical weather prediction (NWP) and climate models. The functions have smaller values than those used in NWP. There is also support for the use of K-profile similarity in parametrizations. Thus, the results provide improved understanding and motivate future developments of the parametrization of the SBL.
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U2 - 10.1007/s10546-004-2820-6
DO - 10.1007/s10546-004-2820-6
M3 - Article
VL - 118
SP - 247
EP - 272
JO - Boundary-Layer Meteorology
JF - Boundary-Layer Meteorology
SN - 0006-8314
IS - 2
ER -