Implementation

Coverage

• Coverage and Coverage Sum are two indicators used to assess the extent of Argo float observations.

• Coverage Sum represents the average monthly coverage across all boxes. It is computed by taking the mean of the monthly coverage values for each individual box.

• Coverage is also the average monthly coverage across all boxes but with an additional constraint: it is limited by the coverage target for each box. For example, if there are 4 observations in a box in a given month, but the target is 3, the Coverage for that box will only consider 3 observations, not the full 4.

• The difference between Coverage and Coverage Sum can be interpreted as the potential for optimizing the array while maintaining the same level of activity.

• Additionally, note that Coverage and Covervage Sum only includes data that is considered good for temperature and salinity (T/S) measurements.

Data flow

Quality

Every month, the index file is checked and A quality profil are counted. The ratio between A quality profile and all profile is displayed in the quality KPI for all variables.

We need to check if the computation is re-done regularly (e.g. once a year) to take into account improvement in the overall data quality of the data base.