A rare intercomparison of nutrient analysis at sea: lessons learned and recommendations to enhance comparability of open-ocean nutrient data
| العنوان: | A rare intercomparison of nutrient analysis at sea: lessons learned and recommendations to enhance comparability of open-ocean nutrient data |
|---|---|
| المؤلفون: | Margot Cronin, Triona McGrath, Evin McGovern, Elizabeth Kerrigan, Clynton Gregory, Douglas W.R. Wallace, Claire Normandeau |
| المصدر: | Earth System Science Data, Vol 11, Pp 355-374 (2019) Earth System Science Data |
| بيانات النشر: | Copernicus GmbH, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | lcsh:GE1-350, 0106 biological sciences, High concentration, 010504 meteorology & atmospheric sciences, business.industry, 010604 marine biology & hydrobiology, Flagging, lcsh:QE1-996.5, Comparability, Pelagic zone, 01 natural sciences, lcsh:Geology, Nutrient, 13. Climate action, Data quality, General Earth and Planetary Sciences, Environmental science, Data center, 14. Life underwater, Physical geography, business, lcsh:Environmental sciences, World Ocean Circulation Experiment, 0105 earth and related environmental sciences |
| الوصف: | An intercomparison study has been carried out on the analysis of inorganic nutrients at sea following the operation of two nutrient analysers simultaneously on the GO-SHIP A02 trans-Atlantic survey in May 2017. Both instruments were Skalar San++ Continuous Flow Analyzers, one from the Marine Institute, Ireland and the other from Dalhousie University, Canada, each operated by their own laboratory analysts following GO-SHIP guidelines while adopting their existing laboratory methods. There was high comparability between the two data sets and vertical profiles of nutrients also compared well with those collected in 1997 along the same A02 transect by the World Ocean Circulation Experiment. The largest differences between data sets were observed in the low-nutrient surface waters and results highlight the value of using three reference materials (low, middle and high concentration) to cover the full range of expected nutrients and identify bias and non-linearity in the calibrations. The intercomparison also raised some interesting questions on the comparison of nutrients analysed by different systems and a number of recommendations have been suggested that we feel will enhance the existing GO-SHIP guidelines to improve the comparability of global nutrient data sets. A key recommendation is for the specification of clearly defined data quality objectives for oceanic nutrient measurements and a flagging method for reported data that do not meet these criteria. The A02 nutrient data set is currently available at the National Oceanographic Data Centre of Ireland: https://doi.org/10.20393/CE49BC4C-91CC-41B9-A07F-D4E36B18B26F and https://doi.org/10.20393/EAD02A1F-AAB3-4F4E-AD60-6289B9585531. |
| وصف الملف: | application/pdf |
| تدمد: | 1866-3516 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6a2eba39de9d1d944e391541069e701f https://doi.org/10.5194/essd-11-355-2019 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....6a2eba39de9d1d944e391541069e701f |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 18663516 |
|---|