Analysis of the turbulence parameterisations for the atmospheric surface layer

0499855 - MÚ 2019 RIV CZ eng C - Conference Paper (international conference)
Caggio, Matteo - Bodnár, Tomáš
Analysis of the turbulence parameterisations for the atmospheric surface layer.
Topical Problems of Fluid Mechanics 2018. Praha: Institue of Thermomechanics AS CR, 2018 - (Šimurda, D.; Bodnár, T.), s. 31-38. ISBN 978-80-87012-65-9. ISSN 2336-5781.
[Conference TOPICAL PROBLEMS OF FLUID MECHANICS 2018. Praha (CZ), 21.02.2018-23.02.2018]
R&D Projects: GA ČR GA16-03230S
Institutional support: RVO:67985840
Keywords : atmospheric boundary layer * Monin-Obukhov similarity theory * turbulence parameterisations * strong strati cation
OECD category: Applied mathematics
http://www.it.cas.cz/fm/im/im/proceeding/2018/5

The purpose of this short communication is to present a method that aims to express the turbulent variables in the atmospheric surface-layer in function of the stability of the atmosphere. The case of very stable conditions (strong strati cation), where theoretical approaches provide conflicting results (see Luhar et al. [11]), is analysed in detail to provide some insight into the limits of applicability for some of the most popular models of turbulence. The problem of the existence of the critical flux Richardson number is also taken into account.
Permanent Link: http://hdl.handle.net/11104/0292048