Updated “recipes” for SOCAT quality control published in a new version of the cookbook
The Surface Ocean CO2 Atlas (SOCAT) that was developed by the international marine carbon research community, celebrated its 10th anniversary in 2017. It provides a synthesis of quality-controlled, surface ocean fCO₂ (fugacity of carbon dioxide) observations, and is a milestone for biogeochemical and climate research and in informing policy. SOCAT data is readily available and can be used to quantify ocean carbon sink and ocean acidification, and to evaluate ocean biogeochemical models.
SOCAT data are released in versions, with each succeeding version containing new data sets and updates of the previous one. SOCAT version 1 was released in 2011. The most recent, version SOCAT version 6, comprises 23.4 million global oceans and coastal seas observations from 1957 to 2017, as well as calibrated sensor data.
A team led by Siv Lauvset (Bergen, Norway) recently released an updated “cookbook” of quality control procedures for SOCAT data. This update will be used from SOCAT version 7 onward. The revised quality control criteria will not be retrospectively applied to data sets in SOCAT versions 1-6. The “cookbook” is useful for quality control and to give those who wish to submit data to SOCAT an indication of what is required to achieve the highest quality rating. New data can be submitted at any time, and will be included in the next SOCAT release. The deadline for quality control of SOCAT version 7 is 31 March 2019.