Observations acquired in the stable surface layer during two field experiments (The Mountain Terrain Atmospheric Modeling and Observations Program and the Climate Change Tower Integrated Project) are considered to test different parametrizations of the dissipation rate of turbulence kinetic energy (TKE). Particular attention is dedicated to the effect of the submeso motions on these parametrizations. The analysis shows that TKE-based formulations are particularly prone to the submeso effect, while better results are obtained if the vertical velocity variance is considered. In the latter case, stability must be taken into account explicitly in Mellor-Yamada type parametrizations but not in shear-based formulations.
On the parametrizations for the dissipation rate of the turbulence kinetic energy in stable conditions / Mario Schiavon, Francesco Barbano, Luigi Brogno, Laura Sandra Leo, Francesco Tampieri, Silvana Di Sabatino. - In: BULLETIN OF ATMOSPHERIC SCIENCE AND TECHNOLOGY. - ISSN 2662-1509. - ELETTRONICO. - 4:1(2023), pp. 3.1-3.16. [10.1007/s42865-023-00055-6]
On the parametrizations for the dissipation rate of the turbulence kinetic energy in stable conditions
Mario Schiavon
;Francesco Barbano;Luigi Brogno;Laura Sandra Leo;Silvana Di Sabatino
2023
Abstract
Observations acquired in the stable surface layer during two field experiments (The Mountain Terrain Atmospheric Modeling and Observations Program and the Climate Change Tower Integrated Project) are considered to test different parametrizations of the dissipation rate of turbulence kinetic energy (TKE). Particular attention is dedicated to the effect of the submeso motions on these parametrizations. The analysis shows that TKE-based formulations are particularly prone to the submeso effect, while better results are obtained if the vertical velocity variance is considered. In the latter case, stability must be taken into account explicitly in Mellor-Yamada type parametrizations but not in shear-based formulations.File | Dimensione | Formato | |
---|---|---|---|
Revised_Validation_of_parametrizations_for_the_TKE_dissipation_rate.pdf
embargo fino al 08/05/2024
Tipo:
Postprint
Licenza:
Licenza per accesso libero gratuito
Dimensione
2.45 MB
Formato
Adobe PDF
|
2.45 MB | Adobe PDF | Visualizza/Apri Contatta l'autore |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.