A statistical-mechanical approach to study the hydrodynamic stability of stably stratified atmospheric boundary layer

Abstract : We study the hydrodynamic equilibrium properties of the stably stratified atmospheric boundary layer from measurements obtained in the Snow-Horizontal Array Turbulence Study (SnoHATS) campaign at the Plaine Morte Glacier in the Swiss Alps. Our approach is based on a combination of dynamical systems techniques and statistical analysis. The main idea is to measure the deviations from the behavior expected by a turbulent observable when it is close to a transition between different metastable states. We first assess the performance of our method on the Lorenz attractor, then on a turbulent flow. The results show that the method recognizes subtle differences among different stable boundary layers turbulence regimes and may be used to help characterise their transitions.
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https://hal.archives-ouvertes.fr/hal-01413073
Contributeur : Faranda Davide <>
Soumis le : jeudi 6 juillet 2017 - 17:53:20
Dernière modification le : mercredi 12 juillet 2017 - 01:09:11

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  • HAL Id : hal-01413073, version 2

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Guillaume Nevo, Nikki Vercauteren, Amandine Kaiser, Bérengère Dubrulle, Davide Faranda. A statistical-mechanical approach to study the hydrodynamic stability of stably stratified atmospheric boundary layer. 2017. <hal-01413073v2>

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