The table below provides basic information about the float, including primary sensors, mission parameters and current status of profiles.
| Institute | CSIRO |
| Principal Investigator | Susan Wijffels |
| Pressure Sensor | Druck (serial number=8167) |
| CTD Sensor | APEX-SBE-41 (serial number=2393) |
| CTD Sampling Mode | Burst Sampler |
| Controller Board | APF 8 |
| Additional Sensors/Software | None |
| Park Depth | 1000 m |
| Profile Depth | 2000 m |
| Launch Date | 04-04-2006 |
| Number of D-moded Profiles | 177 |
| Calibration Date | 15-08-2011 |
| Pressure Drift | Surface Pressure Offset corrected |
| Salinity Drift | TBTO first few profiles, otherwise no salinity drift detected |
This float was located in the Southern Ocean, drifting eastward in an area bounded by 135 to 190 ºE and 45 to 58 º S.
The surface pressure for this float is shown in the plot below.
Potential Temperature-Salinity (a), Location (b, Max Temperature (c) and Sea Surface Salinity (d) plots located below.
The plot below shows the potential-temperature/salinity relationship for the deepest theta levels where the relationship between the two parameters should show the least variation.
The two plots below show a). the location of this float (black circles) in relation to the position of other nearby argo floats (coloured circles) and b). The potential-temperature/salinity curve for this float (in black) compared to nearby argo floats (coloured).
The potential-temperature/salinity relation for the deepest theta levels for this float (in black) and nearby argo floats (coloured) is displayed below.
There were inversions in profiles; 32,86,173. None of these were significant and therefore were not flagged. There were inversions in profiles 67 at 320 m and in profile 86 a spike at 375 m. These were flagged as QC=4 for both T & S.
Salt hooks were located in profiles; 3,5,8,10,11,13,15,16,19,20,23,27,29,31,33,35,37,38,39,40,42,46,47,50,53,56,61,67,68,70,71,73,79,82,87,88,91,93,94,96,97,99,101,103,104,107,109,111,112,114,116,118,120,122,124,126,128,130,132,134,136,137,140,142,144,145,148,150,153,155,157,158,160,162,164,166,168,171,173,174,176. These were flagged as QC 4 for both T & S.
The float appears to ground on profile 66. QC'd this entire profile as QC=4 as it was offset from other profiles, was not density compensated and looked strange - most likely caused by gunk in the cell. The bottom values of pf 95 were QC'd as 4 down from 750 m. A spike in pf 37 at 750 m was flagged as was a spike in pf 40 at 1200 . The last 2 values of pf 93 and the last value of pf 24 were flagged as QC=4 for both T & S.
The plot below shows the analysis of salinity drift using the OW software.
This float requires no correction.
The four plots below show the salinity anomalies on theta surfaces compared to (a) the Gouretski and Kolterman climatology, (b) the CARS (CSIRO Atlas of Regional Seas)/WOA (World Ocean Atlas) climatology, (c) the anomalies within the float series itself, (i.e. the salinity anomaly of each profile from the mean profile average for the float and (d) the raw float salinity compared to the CARS and G&K climatological salinity on a deep theta surface.
Apart from TBTO affecting the first few profiles, the rest of the float looks fine.
The plots below show the raw float salinity data (solid blue line) compared to neighbouring argo floats (coloured symbols) on a deep potential temperature surface. The locality map shows the location of the profiles for this float and for neighbouring floats.
TBTO first few profiles, otherwise float looks fine compared to neighbouring floats.
This float required correction for the fresh offset caused by TBTO fouling over the first 6 profiles, otherwise no salinity drift correction.
The plot below summarises the QC flags and salinity differences for the raw and adjusted salinity fields in the final delayed mode files submitted to the GDAC.
