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Título : CARINA alkalinity data in the Atlantic Ocean
Autor : Velo, A. ; Pérez, Fiz F. ; Brown, P.; Tanhua, T.; Schuster, Ute; Key, Robert M.
Fecha de publicación : 27-nov-2009
Editor: Copernicus Publications
Citación : Earth System Science Data 1(1): 45-61 (2009)
Resumen: Data on carbon and carbon-relevant hydrographic and hydrochemical parameters from previously non-publicly available cruise data sets in the Arctic, Atlantic and Southern Ocean have been retrieved and merged to a new database: CARINA (CARbon IN the Atlantic). These data have gone through rigorous quality control (QC) procedures to assure the highest possible quality and consistency. The data for most of the measured parameters in the CARINA data base were objectively examined in order to quantify systematic differences in the reported values, i.e. secondary quality control. Systematic biases found in the data have been corrected in the data products, i.e. three merged data files with measured, calculated and interpolated data for each of the three CARINA regions; Arctic, Atlantic and Southern Ocean. Out of a total of 188 cruise entries in the CARINA database, 98 were conducted in the Atlantic Ocean and of these, 75 cruises report alkalinity values. Here we present details of the secondary QC on alkalinity for the Atlantic Ocean part of CARINA. Procedures of quality control, including crossover analysis between cruises and inversion analysis of all crossover data are briefly described. Adjustments were applied to the alkalinity values for 16 of the cruises in the Atlantic Ocean region. With these adjustments the CARINA database is consistent both internally as well as with GLODAP data, an oceanographic data set based on the World Hydrographic Program in the 1990s. Based on our analysis we estimate the internal accuracy of the CARINA-ATL alkalinity data to be 3.3 μmol kg−1. The CARINA data are now suitable for accurate assessments of, for example, oceanic carbon inventories and uptake rates and for model validation.
Descripción : 17 pages, 24 figures, 1 table.
Versión del editor: http://dx.doi.org/10.5194/essd-1-45-2009
URI : http://hdl.handle.net/10261/24951
DOI: 10.5194/essd-1-45-2009
ISSN: 1866-3508
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