Other EC sites:

Kuivajärvi  Siikaneva I  SMEAR I (Värriö)  SMEAR II 27.0m 


SMEAR II subcanopy EC measurements

This website contains plots of data from Siikaneva II EC system.
The figures are intended for detecting instrument's failure and they are updated daily. Data are not quality checked.
You can find the site diary here (the link works only within the University network).

Choose figure category:
Fluxes  Means  Lag times  Spikes  Flow distortion  Spectra/Cospectra  Spectral attenuation 


Flow distortion.

Figure 1: The second coordinate rotation angle (upper plot) and std(w)/u* (lower plot) vs wind direction. According to Rannik (1998) std(w)/u* should be approx. 1.3 in a neutral stratification.