Data · dataset · 2026
Stable boundary layers and subfilter-scale motions
Listed in National Center for Atmospheric Research
Recent high-resolution large-eddy simulations (LES) of a stable atmospheric boundary layer (SBL) with mesh sizes Ä�'�=(5123,10243,20483) or mesh spacings ââ³=(0.78,0.39,0.2) m are analyzed.
Description
The LES solutions are judged to be converged based on the good collapse of vertical profiles of mean winds, temperature, and low-order turbulence moments, i.e., fluxes and variances, with increasing N. The largest discrepancy is in the stably stratified region above the low-level jet.
Subfilter-scale (SFS) motions are extracted from the LES with Ä�'�=20483 and are compared to sonic anemometer fields from the horizontal array turbulence study (HATS) and its sequel over the ocean (OHATS). The results from the simulation and observations are compared using the dimensionless resolution ratio ÃâºÄ�'¤/ââ³Ä�'" where ââ³Ä�'" is the filter width and ÃâºÄ�'¤ is a characteristic scale of the energy-containing eddies in vertical velocity.
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The SFS motions from the observations and LES span the ranges 0.1<ÃâºÄ�'¤/ââ³Ä�'"<20 and are in good agreement. The small, medium, and large range of ÃâºÄ�'¤/ââ³Ä�'" correspond to Reynolds-averaged Navier-Stokes (RANS), the gray zone (a.k.a. "Terra Incognita-), and fine-resolution LES. The gray zone cuts across the peak in the energy spectrum and then flux parameterizations need to be adaptive and account for partially resolved flux but also "stochastic- flux fluctuations that represent the turbulent correlation between the fluctuating rate of strain and SFS flux tensors.
LES data with mesh 20483 will be made available to the research community through the web and tools provided by the Johns Hopkins University Turbulence Database.
Links
Get the data
- Publisher page n2t.org/ark:/85065/d7v41087 ↗
documentation · download · from data ucar edu
Where it is published
- data.ucar.edu /dataset/stable-boundary-layers-and-subfilter-scale-motions ↗
National Center for Atmospheric Research dataset page
landing page · from data ucar edu
Catalogue records · 1
- CKAN API data.ucar.edu/api/3/action/package_show?id=4b043343-46d2-4d34-b91c-a2d27af6b… ↗
metadata API · from data ucar edu
Topics
- From keywords
- Earth & Environmental Science · Ocean & Atmospheric Science
- Inferred from text
- Atmospheric sciences 70% · Simulation 75%
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| National Center for Atmospheric Research | 4b043343-46d2-4d34-b91c-a2d27af6b912 | 12 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| concepts[field].anzsrc:group:3701 | enrichment · data ucar edu | taxonomy-embedding@1.1.0 | title+keywords+description (70%) |
| concepts[field].local:field:earth-environmental | mapping · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| concepts[field].local:field:ocean-atmospheric | mapping · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| concepts[method].local:method:simulation | enrichment · data ucar edu | keyword-concept-rules@1.0.0 | title+description (75%) |
| created_date | source · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| description | source · data ucar edu | connector:data_ucar_edu@1.0.0 | /notes |
| publication_date | source · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| title | source · data ucar edu | connector:data_ucar_edu@1.0.0 | /title |
| updated_date | source · data ucar edu | connector:data_ucar_edu@1.0.0 |