Lake Wyangan was used as a cold target for daily in-flight calibration of PLMR, performed before and after each flight from July 6 to July 10. 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 6212991 N 409847 E (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 (July 4) and end (July 11) 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 |