Articles | Volume 13, issue 1
Nonlin. Processes Geophys., 13, 119–123, 2006
https://doi.org/10.5194/npg-13-119-2006

Special issue: Turbulent transport in geosciences

Nonlin. Processes Geophys., 13, 119–123, 2006
https://doi.org/10.5194/npg-13-119-2006

  27 Apr 2006

27 Apr 2006

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

A. Maurizi A. Maurizi
  • Institute of Atmospheric Sciences and Climate via Gobetti 101,I-40129 Bologna, Italy

Abstract. 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.