Articles | Volume 11, issue 1
https://doi.org/10.5194/essd-11-355-2019
https://doi.org/10.5194/essd-11-355-2019
Review article
 | 
11 Mar 2019
Review article |  | 11 Mar 2019

A rare intercomparison of nutrient analysis at sea: lessons learned and recommendations to enhance comparability of open-ocean nutrient data

Triona McGrath, Margot Cronin, Elizabeth Kerrigan, Douglas Wallace, Clynton Gregory, Claire Normandeau, and Evin McGovern

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Cited articles

Aoyama, M., Becke, S., Dai, M., Daimon, H., Gordon, L. I., Kasai, H., Kerouel, R., Kress, N., Masten, D., Murata, A., Nagai, N., Ogawa, H., Ota, H., Saito, H., Saito, K., Shimizu, T., Takano, H., Tsuda, A., Yokouchi, K., and Youenou, A.: Recent comparability of Oceanographic Nutrients Data: Results of a 2003 Intercomparison Exercise using Reference Materials, Anal. Sci., 23, 1151–1154, 2007. 
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Becker, S., Aoyama, M., Woodward, E. M. S., Bakker, K., Coverly, S., Mahaffey, C., and Tanhua, T.: GO-SHIP Repeat Hydrography Nutrient Manual 2019: The precise and accurate determination of dissolved inorganic nutrients in seawater, Continuous Flow Analysis methods and laboratory practices, Final Report, available at: http://www.ioccp.org/images/06Nutrients/GO-SHIPRepeatHydrographyNutrientManual_October2018_Final-Draft.pdf, last access: 5 March 2019. 
Broecker, W. S. and Peng, T. H.: Tracers in the Sea, 2543, Lamont-Doherty Geological Observatory, Columbia University, New York, 1982. 
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We report results from an intercomparison exercise on the analysis of nutrients at sea. Two independent teams (Marine Institute, Ireland and Dalhousie University Canada) carried out an analysis of a GO-SHIP hydrographic section. The cruise provided a unique opportunity to assess the likely comparability of nutrient data collected following GO-SHIP protocols. Datasets were high quality and compared well but highlighted a number of issues relevant to the comparability of global nutrient data.
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