Evidence of Mixed Scaling for Mean Profile Similarity in the Stable Atmospheric Surface Layer
Field | Value | Language |
dc.contributor.author | Heisel, Michael | |
dc.contributor.author | Chamecki, Marcelo | |
dc.date.accessioned | 2024-08-22T04:10:44Z | |
dc.date.available | 2024-08-22T04:10:44Z | |
dc.date.issued | 2023 | en_AU |
dc.identifier.uri | https://hdl.handle.net/2123/32982 | |
dc.description.abstract | A new mixed scaling parameter Z = z/(Lh)^1/2 is proposed for similarity in the stable atmospheric surface layer, where z is the height, L is the Obukhov length, and h is the boundary layer depth. In comparison with the parameter z = z/L from Monin–Obukhov similarity theory (MOST), the new parameter Z leads to improved mean profile similarity for wind speed and air temperature in large-eddy simulations. It also yields the same linear similarity relation for CASES-99 field measurements, including in the strongly stable (but still turbulent) regime where large deviations from MOST are observed. Results further suggest that similarity for turbulent energy dissipation rate depends on both Z and z. The proposed mixed scaling of Z and relevance of h can be explained by physical arguments related to the limit of z-less stratification that is reached asymptotically above the surface layer. The presented evidence and fitted similarity relations are promising, but the results and arguments are limited to a small sample of idealized stationary stable boundary layers. Corroboration is needed from independent datasets and analyses, including for complex and transient conditions not tested here. | en_AU |
dc.language.iso | en | en_AU |
dc.publisher | American Meteorological Society | en_AU |
dc.relation.ispartof | Journal of the Atmospheric Sciences | en_AU |
dc.subject | atmosphere | en_AU |
dc.subject | boundary layer | en_AU |
dc.subject | surface layer | en_AU |
dc.subject | large-eddy simulations | en_AU |
dc.subject | field experiments | en_AU |
dc.title | Evidence of Mixed Scaling for Mean Profile Similarity in the Stable Atmospheric Surface Layer | en_AU |
dc.type | Article | en_AU |
dc.subject.asrc | ANZSRC FoR code::40 ENGINEERING::4012 Fluid mechanics and thermal engineering::401208 Geophysical and environmental fluid flows | en_AU |
dc.subject.asrc | ANZSRC FoR code::40 ENGINEERING::4012 Fluid mechanics and thermal engineering::401213 Turbulent flows | en_AU |
dc.identifier.doi | 10.1175/JAS-D-22-0260.1 | |
dc.type.pubtype | Publisher's version | en_AU |
dc.rights.other | © Copyright 2023 American Meteorological Society (AMS). For permission to reuse any portion of this Work, please contact [email protected]. | en_AU |
dc.relation.other | NSF-AGS-2031312 | |
dc.relation.other | DE-SC0022072 | |
usyd.faculty | SeS faculties schools::Faculty of Engineering::School of Civil Engineering | en_AU |
usyd.citation.volume | 80 | en_AU |
usyd.citation.issue | 8 | en_AU |
usyd.citation.spage | 2057 | en_AU |
usyd.citation.epage | 2073 | en_AU |
workflow.metadata.only | No | en_AU |
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