QC flag scheme

[mhidas]

It's been suggested that we could have a two-tiered flagging scheme:

1. A simple good/bad(/maybe) flag that most users would use to select good data for processing;
2. A "reason" flag to record which QC checks (auto or expert) failed.

Both of these could be applied on a per-profile and a per-level basis.

[tcarval]

Hello Marty, Argo is using such a scheme, although it does not appear as a two-tiered flagging. Explanations in Argo user's manual, version 3.2, September 11th 2017 http://dx.doi.org/10.13155/29825 1. A QC flags scale : see page 78 §3.2 “Reference table 2: Argo quality control flag scale” 2. A history section that records the list of tests performed and the list of passed/failed tests: see page 122 §5 “Using the History section of the Argo netCDF Structure” Best regards, Thierry De : Marty Hidas <notifications@github.com> Envoyé : mercredi 18 avril 2018 12:36 À : IQuOD/Formats <Formats@noreply.github.com> Cc : Subscribed <subscribed@noreply.github.com> Objet : [IQuOD/Formats] QC flag scheme (#6) It's been suggested that we could have a two-tiered flagging scheme: 1. A simple good/bad(/maybe) flag that most users would use to select good data for processing; 2. A "reason" flag to record which QC checks (auto or expert) failed. Both of these could be applied on a per-profile and a per-level basis. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#6> , or mute the thread <https://github.com/notifications/unsubscribe-auth/AS5znADuKdyoLgkShKHn0gT8SOCYznrwks5tpxcsgaJpZM4TZ045> . <https://github.com/notifications/beacon/AS5znDn60rQoA0En_oERuf3KlitKiqsRks5tpxcsgaJpZM4TZ045.gif>

[BecCowley]

The scheme recommended by Tim is the IODE flagging scheme. Here is the link:
https://www.iode.org/index.php?option=com_oe&task=viewDocumentRecord&docID=10762
I suggest we need to continue with the simple scheme followed in Argo and GTSPP. Can we fit it with the IODE scheme?
I think we should avoid using history records if possible. The reason for choice of flag should be clear in the flags that we select.