An investigation of turbulent fluxes above a forest canopy in irregular terrain

Turbulent wind data were collected above an oak-hickory forest canopy located in irregular terrain in East Tennessee. The data were processed in two distinct ways and the results compared. The first technique involved a three-dimensional coordinate rotation, followed by the accepted method of calculating turbulent fluxes at more ideal sites. The second technique involves real-time mean removal with digital recursive filters, and real-time calculation of the turbulent fluxes. Stability of the solution is examined as a function of the mean removal filter time constant and the accumulation period of the solution.