Lake Wyangan was used as a cold target for daily in-flight calibration of PLMR, performed before and after each flight from December 4 to 8. PLMR was flown at the lowest permissible altitude (500ft) so that the swath of the instrument (300m at 500ft) was entirely included within the lake boundary along a distance of around 1km. Water temperature and salinity within the top 1cm layer of water were monitored continuously during the campaign using a UNIDATA 6536BR temperature and salinity sensor connected to a logger, located at 6212934N 409830E (UTM 55 H) on Lake Wyangan. Furthermore, transects of water temperature and salinity in the top 1cm layer were undertaken with a handheld temperature and salinity meter (Hydralab QuantaR) at the start (December 2) and end (December 8) of the week, in north-south and east-west directions at 100m spacing centred on the monitoring station. Data from both the monitoring station and transects can be downloaded from the Download Centre, and graphically viewed below.

Map of Lake Wyangan PLMR calibration set-up

Water temperature and salinity station