Advertisement

Theoretical and Applied Climatology

, Volume 66, Issue 3–4, pp 173–184 | Cite as

Internal equilibrium layer growth over forest

  • E. Dellwik
  • N. O. Jensen

Summary

 Friction velocity data from different heights above a forest are used to evaluate the influence from the surrounding landscape on forest micro-meteorological measurements under near-neutral conditions. Data are used from one field site and two forest sites. The field site data are used to estimate the magnitude of the scatter. Different theoretical friction velocity profiles for the Internal Boundary Layer (IBL) are tested against the forest data. The results yield information on the Internal Equilibrium Layer (IEL) growth and an equation for the IEL height for neutral conditions is derived. For stable conditions the results indicate that very long fetches are required in order to measure parameters in equilibrium with the actual surface.

Keywords

Boundary Layer Stable Condition Velocity Profile Actual Surface Neutral Condition 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Springer-Verlag/Wien 2000

Authors and Affiliations

  • E. Dellwik
    • 1
  • N. O. Jensen
    • 1
  1. 1.Risø National Laboratory, Roskilde, DenmarkDK

Personalised recommendations