Where can I get access to data and how is it organized?#

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Take a look at this simple example on how to get access to Argo data through Coriolis GDAC FTP. Let’s go for it!

  1. Before opening the FTP client, make sure where the files are allocated. In this case, the files are located in ftp.ifremer.fr/ifremer/argo.

  2. Open the FTP client and fill in the box with the host provided ftp.ifremer.fr/ifremer/argo in the host.

  3. You are now connected to the Coriolis GDAC!

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Each data will have a specific quality flag assigned that indicates its status! Both Real-Time quality control and Delayed - Mode quality control follow a solid quality flag policy. Here are some examples that show how robust this quality flag policy is:

• The value assigned by a test cannot override a higher value from a previous test. Taking the Real-Time quality control as an example: a QC flag ‘4’ (bad data) set by Test 11 (gradient test) cannot be decreased to QC flag ‘3’ (bad data that is potentially correctable) set by Test 15 (gray list).

• A measurement with QC flag ‘4’ (bad data) or ‘3’ (bad data that are potentially correctable) cannot get a better QC flag in other quality control tests.

• Since salinity (PSAL) is almost always calculated from temperature (TEMP) and conductivity (CNDC), if the temperature is flagged ‘4’ (or ‘3’), then salinity is also flagged as ‘4’ (or ‘3’).

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