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=2346023) |
| CTD Sensor | APEX-SBE-41 (serial number=3105) |
| CTD Sampling Mode | Burst Sampler |
| Controller Board | APF 8 |
| Additional Sensors/Software | Aanderaa Oxygen Optode 3830 (serial number=663) |
| Park Depth | 1000 m |
| Profile Depth | 2000 m |
| Launch Date | 28-01-2007 |
| Number of D-moded Profiles | 111 |
| Calibration Date | 26-08-2010 |
| Pressure Drift | Surface Pressure Offset corrected |
| Salinity Drift | No salinity drift detected |
This float was deployed to the south of Tasmania, in a region bounded by 138 to 155 ºE and 42 to 50 ºS.
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.
Surface temperatures generally varied between 9 and 15 ºC and surface salinities from 34.2 to 35.3.
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 profiles are generally tightly distributed through most of the water column with most variability occurring below the salinity minimum. The deep profiles show quite a bit of variability.
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.
Comparison with neighbouring profiles shows a reasonably tight distribution in the upper water column. At depth, the profiles show quite a spread in variability but this is comparable profiles from neighbouring floats.
There were inversions in profiles 1 (thermal lag spike, not flagged), 13 (at 120-130m depth, not flagged), 15 (not significant), 16 (at 150 m depth, flagged as QC=4), 40 (not significant), 41 (at 240m depth, flagged as QC=4), 71 (surface, not significant) and 72 (at 180m depth, flagged as QC=4),80 (ns),82 (ns).
Salt hooks were located in profiles; 2,4,6,7,10,11,14,15,19,20,21,22,23,24,25,26,27,28,29,30,31,33,34,36,47,49,52,55,57,59,61,63,66,68,70,72,74,76,78,79,81,82,83,85,88,89,91,92,94,96,97,108,110. These were flagged as QC 4 for both T & S.
No missing profiles. The float appears to ground on profiles; 12, 13, 16, 17, 18. A few near bottom values were flagged as QC4. Profile 42 hangs out salty from the envelope, this looks real.
The plot below shows the analysis of salinity drift using the WJO/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.
This float is very close to the 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.
This float is very close to nearby argo in a high variability area.
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.
Created 26-08-2010