Nordic Seas total alkalinity data in CARINA
[摘要] Water column data of inorganic carbon and carbon relevant hydrographic andhydrochemical parameters from 188 previously non-publicly available cruisesin the Arctic, Atlantic, and Southern Ocean have been retrieved and mergedinto a new database: CARINA (CARbon IN the Atlantic). The data have beensubject to rigorous quality control (QC) in order to ensure highest possiblequality and consistency. The data for most of the parameters included wereexamined in order to quantify systematic biases in the reported values, i.e.secondary quality control. The quality control was carried out separately ineach of the three CARINA regions: The Arctic Mediterranean Seas (AMS), theAtlantic (ATL), and the Southern Ocean (SO). The AMS was further split upinto the Arctic Ocean and Nordic Seas during the secondary QC. The qualitycontrol of the different parameters in the different regions is described inthe series of papers in this special issue of ESSD, with this contributionfocusing on the Nordic Seas total alkalinity (ALK) data.
Significant biases have been corrected for in the data products, i.e. thethree merged files with measured, calculated and interpolated values foreach of the three CARINA regions (AMS, SO and ATL). With the adjustments theCARINA database is consistent both internally as well as with GLODAP (Key etal., 2004) and is suitable for accurate assessments of, for example, oceaniccarbon inventories and uptake rates and for model validation. Out of the 35cruises from the Nordic Seas included in CARINA, 21 had ALK data. The datafrom 6 of these were found to be of low quality and should not be used. Ofthe others, 3 were found to be biased low and were subject to adjustment.Thus the final CARINA data product contains ALK data from 15 cruises fromthe Nordic Seas, and these data appear consistent to ±3 μmol kg−1.
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[效力级别] [学科分类] 天文学(综合)
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