Consistency checks of DM salinity corrections

An additional review of basin-wide data quality has been regularly performed at the NAARC level since 2013. One of the objectives is to ensure that the delayed mode salinity corrections are consistent within the basin. These checks are necessary because delayed mode analyses are conducted by different operators from different national data centres and because procedures, knowledge, and reference datasets have evolved since the beginning of the Argo project.

Method

For each float processed in delayed mode in the NAARC region, we use a modified OW method using four different sets of configuration parameters and the latest available reference data set. Compared to the original OW method (Owens and Wong, 2009), our modified method better takes into account interannual variability and provides more realistic error bars  (see Cabanes et al., 2016).

We only check the DM salinity correction of a float if the results obtained for the four configurations differ significantly from the correction applied by the float's PI. We are then able to isolate a small number of floats for which salinity profiles are examined in more detail: sections along the float path, comparison of some profiles with the closest reference data or with the closest  real-time argo data, if necessary. Finally, when we consider it necessary, we warn the PI or DM operator of the float and suggest that they modify the salinity corrections. The reports are available here.

List of floats for which PI or DM operator have been warned:

*Last check done on Argo snapshot of 06/2018

Float number

DAC

Figure

Status*

4901063

AOML

OPEN

4900148

AOML

OPEN

1900803

AOML

OPEN

6900198

BODC

OPEN

6901407

CORIOLIS

OPEN

6901238

CORIOLIS

OPEN

6901064

CORIOLIS

OPEN

4901416 

CORIOLIS 

OPEN

6900582

CORIOLIS

OPEN

1900650

CORIOLIS

OPEN  (waiting for the files to be converted to 3.1 format)

69017

CORIOLIS

OPEN  (waiting for the files to be converted to 3.1 format)

69016

CORIOLIS

OPEN  (waiting for the files to be converted to 3.1 format)

69024

CORIOLIS

OPEN  (waiting for the files to be converted to 3.1 format)

6900248

CORIOLIS

OPEN  (waiting for the files to be converted to 3.1 format)

4900502

MEDS

OPEN

4900417

MEDS

OPEN

4900406

MEDS

OPEN

1900547

CORIOLIS

CLOSED

1900608

CORIOLIS

CLOSED

6900558

CORIOLIS

CLOSED

6900708

CORIOLIS

CLOSED

6900169

CORIOLIS

CLOSED

6901407

CORIOLIS

CLOSED

6900513

CORIOLIS

CLOSED

6900271

CORIOLIS

CLOSED

4900212

CORIOLIS

CLOSED

4900216

CORIOLIS

CLOSED

6900400

CORIOLIS

CLOSED

6900171

CORIOLIS

CLOSED

6900230

CORIOLIS

CLOSED

6901506

CORIOLIS

CLOSED

6901613

CORIOLIS

CLOSED

6900173

CORIOLIS

CLOSED

6901218

CORIOLIS

CLOSED

6901219

CORIOLIS

CLOSED

4900352

CORIOLIS

CLOSED

4900350

CORIOLIS

CLOSED

69043

CORIOLIS

CLOSED

69039

CORIOLIS

CLOSED

69032

CORIOLIS

CLOSED

6900515

CORIOLIS

CLOSED

6900160

CORIOLIS

CLOSED

6900395

CORIOLIS

CLOSED

6900176

CORIOLIS

CLOSED

6900162

CORIOLIS

CLOSED

6900166

CORIOLIS

CLOSED

6900045

CORIOLIS

CLOSED

4900225

CORIOLIS

CLOSED

4900223

CORIOLIS

CLOSED

4900215

CORIOLIS

CLOSED

4900211

CORIOLIS

CLOSED

1900078

CORIOLIS

CLOSED

1900076

CORIOLIS

CLOSED

6900156

CORIOLIS

CLOSED

6900332

CORIOLIS

CLOSED

6900333

CORIOLIS

CLOSED

6900344

CORIOLIS

CLOSED

6900346

CORIOLIS

CLOSED

6900821

CORIOLIS

CLOSED

4900412

MEDS

CLOSED

4900627

MEDS

CLOSED

4900635

MEDS

CLOSED

4900681

MEDS

CLOSED