National Oceanic and
Atmospheric Administration
United States Department of Commerce


FY 2010

Atlantic CFC data in CARINA

Steinfeldt, R., T. Tanhua, J.L. Bullister, R.M. Key, M. Rhein, and J Köhler

Earth Sys. Sci. Data, 2, 1–15, doi: 10.5194/essd-2-1-2010 (2010)

Water column data of carbon and carbon-relevant parameters have been collected and merged into a new database called CARINA (CARbon IN the Atlantic). In order to provide a consistent data set, all data have been examined for systematic biases and adjusted if necessary (secondary quality control (QC)). The CARINA data set is divided into three regions: the Arctic/Nordic Seas, the Atlantic region and the Southern Ocean. Here we present the CFC data for the Atlantic region, including the chlorofluorocarbons CFC-11, CFC-12 and CFC-113 as well as carbon tetrachloride (CCl4). The methods applied for the secondary quality control, a crossover analyses, the investigation of CFC ratios in the ocean and the CFC surface saturation are presented. Bases on the results, the CFC data of some cruises are adjusted by a certain factor or given a “poor” quality flag.

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