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=2619296) |
CTD Sensor | APEX-SBE-41 (serial number=3963) |
CTD Sampling Mode | Burst Sampler |
Controller Board | APF 9 |
Additional Sensors/Software | None |
Park Depth | 1000 m |
Profile Depth | 2000 m |
Launch Date | 10-11-2008 |
Number of D-moded Profiles | 42 |
Calibration Date | 04-08-2010 |
Pressure Drift | Surface Pressure Offset corrected for profiles 1 to 22. This float suffers from severe pressure sensor drift from profile 23, from this profile onwards QC'd as 4 for all parameters |
Salinity Drift | No salinity drift detected, however data from pf 23 onwards QC'd as 4 due to severe pressure drift |
This float was located in the Indian Ocean, off the coast of Western Australia, in an area bounded by 106 to 113 ºE and 20 to 24 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 no inversions.
There were no salt hooks.
Flagged one bad bottom value and a spike in profile 7 in deep water. Profile 35 had suspicious looking salinity values (due to pressure drift) so this whole profile was QC'd as 4.
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.
This float is very close to climatology until pressure problems begin.
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 in the middle of the data envelope, no adjustment required for profiles 1 to 22, then QC=4 due to large surface pressure errors.
This float required no salinity drift correction, however due to the severe pressure drift, data from profile 23 onwards were QC'd as 4.
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 06-12-2010