On the dependence of third- and fourth-order moments on stability in the turbulent boundary layer

A. Maurizi (1)

1 ISAC - CNR Institute of Atmospheric Sciences and Climate

Analysis of published data on the third- and fourth-order moments of vertical velocity in the atmospheric boundary layer is performed, and it is shown that turbulence is non-Gaussian even when almost symmetric. It is also proposed that the relationship between third- and fourth-order moments depends on stability. New data from a wind tunnel experiment roughly support this hypothesis. The analysis presented can explain some differences among datasets, and provides a starting point for investigation on the dependence of third- and fourth-order moments on stability.

Domaines: Cosmologie et astrophysique extra-galactique [astro-ph.CO]; Astrophysique [astro-ph]; Sciences de la Terre

A. Maurizi. On the dependence of third- and fourth-order moments on stability in the turbulent boundary layer. Nonlinear Processes in Geophysics, 2006, 13 (1), pp.119-123. ⟨hal-00302709⟩