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=2409700) |
CTD Sensor | APEX-SBE-41 (serial number=3322) |
CTD Sampling Mode | Burst Sampler |
Controller Board | APF 8 |
Additional Sensors/Software | None |
Park Depth | 1000 m |
Profile Depth | 2000 m |
Launch Date | 17-10-2007 |
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 deployed to the south of Australia, in the GAB, in the Southern Ocean, in a region bounded by 118 to 126 ºE and 37 to 41 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 11 and 18 ºC and surface salinities from 34.8 to 35.5.
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 for this float look very well behaved.
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.
The profiles for this float are in the middle of the envelope and look good.
There were non significant inversions in profiles; 21,23,44,51,68 which were not flagged.
Salt hooks were located in profiles; 2,7,11,12,14,16,18,20,22,24,26,28,30,32,34,38,40,42,44,46,48,50,51,53,56,59,61,64,66,68,70,72,74,76,78,80,82,84. These were flagged as QC 4 for both T & S.
The float did not ground anywhere and there were no missing profiles. The realtime software flagged a few values in profiles 21 and 24 in the mixed layer as bad data - after inspection it was deemed that these values were ok and they were reinstated as QC=1. The last few values of profile 1 were flagged as QC=4 and a large thermal lag spike in profile 12 was also flagged as 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.
There is a high degree of salinity variability within the float record but the float data trends close to climatologies and looks fine.
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.
Similar to the anomaly plot there is high variability in the nearby argo data with large variations at depth. This float is in the middle of the envelope and looks 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.
Created 29-07-2010