UK Geotraces: JC 068 December 2011-January 2012 Nutrients

1. UK Geotraces: JC 068 December 2011-January 2012 Nutrients Malcolm Woodward and Amandine Sabadel, Plymouth Marine Laboratory, Prospect Place, West Hoe, Plymouth, PL1 3DH, United Kingdom email: m.woodward@pml.ac.uk Otago University, Dunedin, New Zealand

2. Nutrients – JC068 Nutrient Analytical Systems deployed on JC 068 4-channel Segmented flow colorimetric nutrient analyser Ammonium Gas diffusion fluorimetric analyser:

3. Nutrients – JC068 All micromolar nutrient data for CTD’s, Underway and Benthic experiments are all complete, QC’d, and submitted to BODC where required. Micromolar Concentrations for Nitrate, Nitrite, Silicate and Phosphate. Ammonium nanomolar concentrations all complete and available from myself at PML. email me ! All the micromolar data are now cross calculated against certified nutrient reference materials supplied by KANSO Technos of Japan with the certification carried out by the Metrology Research Institute in Japan. Data quality and comparability is important ! Please delete old files and numbers and use these final ones rather than those earlier preliminary ones. But if you find any numbers that look wrong/strange then get in touch with me and I can do check on the original analyser computer files. Some bottle misfires I may have included by accident, always check.

4. JC 068 Geotraces – Nutrients

5. JC 068 Geotraces – Nutrients

6. JC 068 Geotraces – Nutrients

7. JC 068 Geotraces – Nutrients

8. JC 068 Geotraces – Top 500m

9. JC 068 Geotraces – Top 500m

10. Geotraces – Nutrients D357

11. JC 068_Surface Underway_Stn 3

12. D357 (blue) and JC 068 (red) Nitrate Phosphate Silicate Temperature Salinity Fluorescence

13. Thank you