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The article provides information of Carbon in Atlantic Ocean (CARINA) data synthesis project. It states that the project was to create a merged calibrated data set from open ocean subsurface measurements by European scientists that is useful for biogeochemical investigations involving the carbon system. It infers that the end result of the project was a set of 3 data products, one for each of the listed ocean regions.

The article presents the methods and techniques used for the quality control of the Carbon In the Atlantic (CARINA) database. It states that the quality control procedures are divided into two which is to study the measurements to identify outliers and obvious errors and to quantify the systematic differences in the reported values. It infers that the process focused also on the crossover analysis to identify the corrections/correction factors needed to minimize the offsets between cruises.

The article offers information on the Carbon In the Atlantic (CARINA) data and its salinity measurements. It notes the need of CARINA data to undergo quality control (QC) to ensure highest possibly quality and consistency. It mentions that the evaluation of the consistency of the quality controlled salinity data suggests that they are consistent to at least 0.05.