AST-12 meeting report posted - Argo

consistency.
TNDP compliance
The audit identifies around 800 TNPD cases in the 7700 floats (~10%) and about 500/800 of
these have been identified by DACs in the comments for at least part of their time series. Only
10% of floats have received an error of 20db for some profiles [sensors with high risk of
microleaks-known by sensor SN], while 25% have had a "4" flag at some stage, but of course
that may not be related to TNPD.
By DAC we find that:
• BODC does well: 92 TNDP-6month, 87 have some QC=2, 41 have some QC=4, 91
have some comments, only 18 have some without comments, good for min ERROR too.
• AOML is pretty good but has not used ERROR=20db
• Coriolis is quite good, and improving.
• CSIRO is good.
• JMA making good progress but still only have about a quarter of the cases we identify
• MEDS is pretty average for QC, there is no use of COMMENTS (they do have 18
commented, but not with the correct comment string)
• CSIO has done nothing
• INCOIS is doing well.
• KMA also has some incorrect comment strings. The QC=2 and 4 may or may not be
related to TNPD flagging - looks like they have made a start but not got too far.
• KORDI has no DM files, so no corrections have been done.
Summary
Great progress has been made by DACs on pressure drifts where known. However, Argo did
not achieve its goal of having all corrections and TNDP labeling completed by December 2010.
Even so, most large DACs are nearly complete and most egregious cases have been treated.
The few remaining cases of disagreement need to be urgently analyzed and fixed (either at the
DAC or in the audit). There are still a substantial number of floats for which the audit cannot
assess a pressure offset – these need to be investigated.
TNDP identification and treatment is not as far along, but is progressing. This may require
further focus by the DACs. Some smaller DACs might need assistance in finishing compliance
and improving decoders.
DACs.
Action item 15: DACs to correctly fill the pressure sensor serial number in the metafiles.
Action item 16: DACs to finish pressure corrections and TNDP identification and
labeling on their floats, with assistance where needed. To be completed by ADMT12. DACs
5.3 Status of trajectory data
B. King presented on the status of the trajectory files and began with a status update on the
work of J-P Rannou and M. Ollitrault who continue to re-decode Argos hex files provided by
DACs. Presently they have reprocessed 470,000 cycles with 170,000 cycles remaining in order
to complete all Argo data up through December 2009. The goal is to complete all Argo data to
the end of 2009 by the end of 2011.
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