Post processing of the data followed the methodology of Barlow et al. (2014) and Wood et al. (2010) (see reference list).

The sonic anemometers were inter-compared before and after the experiment. As no drift and minimal differences were observed, no inter-instrument corrections are made.

All thermocouples and the WXT were calibrated and corrected (on average < 0.5 °C) for instrument bias at the start and end of the experiment using an environmental chamber (Design Environmental Delta 190H) over a -20 °C to 50 °C range, accounting for hysteresis effects due to instrumental time response. CO_2 sensors were also calibrated before and after the experiment to check for drift.