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=7957) |
CTD Sensor | APEX-SBE-41 (serial number=2252) |
CTD Sampling Mode | Burst Sampler |
Controller Board | APF 8 |
Additional Sensors/Software | Ice detection software |
Park Depth | 1000 m |
Profile Depth | 2000 m |
Launch Date | 22-12-2005 |
Number of D-moded Profiles | 187 |
Calibration Date | 08-08-2011 |
Pressure Drift | Surface Pressure Offset corrected |
Salinity Drift | No salinity drift detected |
This float was located in the Southern Ocean, to the south of Australia and New Zealand, in an area bounded by 100 ºE to 130 ºW and 45 to 55 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; 1,13,28,32,45,47,52,53,133,137,142,155,158,168,170,174,175. None of these were significant and therefore were not flagged. Check inversions in pf 32 at 150 m, pf 52 (missing data), pf 133 at 190 m and pf 137 at 280/290 m.
Salt hooks were located in profiles; 2,3,5,7,9,11,13,14,17,19,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,49,51,53,55,57,59,61,62,64,65,67,68,71,73,75,77,80,82,83,85,87,89,91,91,93,95,98,99,101,103,105,107,109,112,115,117,119,120,122,123,125,127,128,131,133,135,137,138,140,142,144,146,148,149,151,152,155,157,163,168,170,172,174,176,178,180,182,184,186. These were flagged as QC 4 for both T & S.
Flagged a spike in pf 50 at 500 m. Flagged bottom few values of pf 1 as these looked anomalous in the TS profile. A few near bottom values were flagged as QC4.
The plot below shows the analysis of salinity drift using the OW software.
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.
The float is very close to climatologies.
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.
The float is in the middle of the envelope for most of the series, it is at the fresh end of the spectrum towards the end of the record but this is fine.
This float required 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.