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=10276) |
CTD Sensor | APEX-SBE-41 (serial number=2904) |
CTD Sampling Mode | Burst Sampler |
Controller Board | APF 8 |
Additional Sensors/Software | None |
Park Depth | 1000 m |
Profile Depth | 2000 m |
Launch Date | 27-04-2007 |
Number of D-moded Profiles | 102 |
Calibration Date | 11-08-2010 |
Pressure Drift | Surface Pressure Offset corrected |
Salinity Drift | No salinity drift detected |
This float was deployed in the Tasman Sea, to the east of Brisbane, in a region bounded by 163 to 167 ºE and 29 to 35 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 17.5 and 23.0 ºC and surface salinities from 35.5 to 35.9.
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; 77,83. These were not significant and were not flagged.
Salt hooks were located in profiles; 3,5,6,13,14,15,16,17,19,20,23,33,34,35,36,37,38,39,40,41,43,45,47,49,51,53,55,59,61,63,65,67,69,73,76,78,84,93,94,95,96,97,98,99,101. These were flagged as QC 4 for both T & S.
The float grounded on mulitple profiles (1,2,9,10,11,12,25,26,27,28,29,30,31,32). Bad values at the bottom of grounded profiles were QC'd as 4 for both T & S. (i.e. 12, 25, 26, 32 and 33). The top two values of profile 15 were QC'd as 4 as these looked odd compared to all other profiles. The high salinity values between 800 and 900 m depth in profile 7 were QC'd as 4 for both T & S.
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 deep theta surface.
This float is similar to the new CARS climatology.
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.
On a slightly warmer theta surface there is significantly more variability (0.02 to 0.03) in the data. This float is comparable with nearby Argo data.
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 11-08-2010