Inorganic nutrient discrete samples from CTD bottles during RRS James Cook cruise 71
Originator's Protocol for Data Acquisition and Analysis
Samples were collected at up to 12 depth levels at 7 CTD stations. Inorganic nitrate (nitrate+nitrite), phosphate and silicate were sampled and measured by a Bran+Luebbe QuAAtro auto-analyser using the standard methods of Grasshoff et al. (1983) and Kirkwood (1996).
References Cited
Hansen H.P. and Koroleff F., 2007. Determination of nutrients, in Methods of Seawater Analysis, Third Edition (eds Grasshoff K., Kremling K. and Ehrhardt M.), Wiley-VCH Verlag GmbH, Weinheim, Germany. Ch 10: 159-228.
Kirkwood D., 1996. Nutrients: Practical Notes on Their Determination in Seawater. Technical Report 17. International Council for the Exploration of the Seas.
BODC Data Processing Procedures
The data arrived at BODC in one Excel ( .xls ) file containing discrete samples collected from the underway non-toxic supply and CTD deployments. Data received were loaded into the BODC database using established BODC data banking procedures. Data were loaded into BODC's database without any changes. Originator's variables were mapped to appropriate BODC parameter codes as follows:
| Originator's variable | Originator's units | Description | BODC Code | BODC units | Comments |
| DIC CRMd | µmol kg -1 | Dissolved inorganic carbon (DIC) or TCO 2 | Not transferred as part of thi s dataset | ||
| TA CRMd | µmol kg -1 | Total alkalinity (TA) | Not transferred as part of this dataset | ||
| salin | Salinity (CTD sensor) | Not transferred as part of this dataset | |||
| temp | Temperature (CTD sensor) | Not transferred as part of this dataset | |||
| NO3 | µmol L -1 | Inorganic nitrate (nitrate+nitrite) | NTRZAATX | µmol L -1 | |
| SiO4 | µmol L -1 | Inorganic silicate | SLCAAATX | µmol L -1 | |
| PO4 | µmol L -1 | Inorganic phosphate | PHOSAATX | µmol L -1 |
Data Quality Report
None (BODC assessment)
Problem Report
None (BODC assessment)
