The effect of submeso motions on second-order moment budgets in the stable atmospheric boundary layer

0523868 - MÚ 2021 RIV CZ eng C - Conference Paper (international conference)
Schiavon, M. - Tampieri, F. - Caggio, M. - Bodnár, Tomáš
The effect of submeso motions on second-order moment budgets in the stable atmospheric boundary layer.
Proceedings of Topical Problems of Fluid Mechanics 2020. Praha: Institute of Thermomechanics of the Czech Academy of Sciences, 2020 - (Šimurda, D.; Bodnár, T.), s. 192-199. ISBN 978-80-87012-74-1. ISSN 2336-5781.
[Topical Problems of Fluid Mechanics 2020. Prague (CZ), 19.02.2020-21.02.2020]
R&D Projects: GA ČR(CZ) GA19-04243S
Institutional support: RVO:67985840
Keywords : submeso motions * pressure redistribution * second-order moment equations
OECD category: Pure mathematics
https://doi.org/10.14311/TPFM.2020.025

The effect of submeso motions on small-scale turbulence is studied considering the budget of the vertical flux of stream-wise momentum, ⟨uw⟩, in the atmospheric stable boundary layer (SBL). A parameter expressing the strength of the submeso effect is defined, and the budget is evaluated from observations both for small and large submeso effect. It results that submeso motions affect the efficiency of the vertical transport by small-scale turbulence, having implications on the terms composing the momentum flux budget and on its corresponding closures.
Permanent Link: http://hdl.handle.net/11104/0308145