Meteorology and Atmospheric Physics

, Volume 119, Issue 1, pp 91–107

Analysis of the parameterization for the wind-velocity fluctuation standard deviations in the surface layer in low-wind conditions

Original Paper

DOI: 10.1007/s00703-012-0219-3

Cite this article as:
Trini Castelli, S. & Falabino, S. Meteorol Atmos Phys (2013) 119: 91. doi:10.1007/s00703-012-0219-3


In this work a formulation for the standard deviations of the wind-velocity fluctuations in the atmospheric surface layer is assessed for heterogeneous conditions and with a particular focus on calm wind regime. Starting from a standard formulation used in the devoted literature, its empirical coefficients are estimated by analysing three sets of surface-layer observed data. The possibility of inferring a formula for these coefficients as functions of the wind speed is investigated. The curves of the standard deviations as functions of the stability show different behaviours depending on the set of coefficients used, even if the values of these do not affect the overall statistical agreement between predicted and observed standard deviations. Referring to typical literature values of the coefficients, it is shown that the agreement certainly improves when distinguishing them for two wind-speed regime, low-wind and windy.

Copyright information

© Springer-Verlag Wien 2012

Authors and Affiliations

  1. 1.Institute of Atmospheric Sciences and Climate, CNR-ISACTurinItaly
  2. 2.Department of PhysicsUniversity of TorinoTurinItaly