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=2409701) |
CTD Sensor | APEX-SBE-41 (serial number=3323) |
CTD Sampling Mode | Burst Sampler |
Controller Board | APF 8 |
Additional Sensors/Software | None |
Park Depth | 1000 m |
Profile Depth | 2000 m |
Launch Date | 16-10-2007 |
Number of D-moded Profiles | 84 |
Calibration Date | 30-07-2010 |
Pressure Drift | Surface Pressure Offset corrected |
Salinity Drift | No salinity drift detected |
This float was located in the Southern Ocean to the south of South Australia, in a region bounded by 130 to 138 ºE and 37 to 40 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.
Surface temperatures generally varied between 12 and 18.5 ºC and surface salinities from 34.8 to 35.4.
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.
TS curve looks fine.
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.
Deep TS looks fine.
There were no inversions.
Salt hooks were located in profiles; 2, 4, 6, 8, 10, 11, 13, 15, 17, 19, 21, 23, 25 and 27. These were flagged as QC 4 for both T & S.
The float did not ground anywhere and there were no missing profiles. The real time software flagged some values as bad in profiles 13, 18 and 19. These were changed to QC=1 for pfs 13 and 19, and one value was changed back to QC=1 in pf 18. The thermal lag spike in profile 23 was QC'd to 4.
The plot below shows the analysis of salinity drift using the WJO/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 theta surface of 0.xx degrees C.
Float similar to climatologies.
The plots below show the raw float salinity data (solid blue line) compared to neighbouring argo floats (coloured symbols) on a potential temperature surface of xx degrees C. The locality map shows the location of the profiles for this float and for neighbouring floats.
There is high variability in the data. The float is at the upper end of the data spectrum but there are numerous other floats that have similarly high salinities and it looks fine compared to climatology.
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 30-07-2010