| Summary: | <p>SOIREE Surface Fe Data<br /> <br /> <em><strong>Comments preserved from the original file:</strong><br /> SOIREE Surface Fe underway data<br /> <br /> Author: Andrew R. Bowie (University of Plymouth and Plymouth Marine Laboratory)<br /> Dept. of Environmental Sciences, University of Plymouth, Drake Circus, Plymouth PL4 8AA, United Kingdom<br /> Tel. +44 1752 233128, Fax +44 1752 233035, E-mail abowie@plymouth.ac.uk<br /> <br /> SOIREE Fe data used in the preparation of the manuscript:<br /> Bowie et al. (2001), The Fate of Added Iron during a Mesoscale Fertilisation Experiment in the Southern Ocean<br /> <br /> This data was prepared by Andrew Bowie, whom the ownership rests with.<br /> The data is for use for SOIREE participants only for research purposes.<br /> Before using this data in any presentation or printed publication, please<br /> contact the author and include full acknowledgements. All enquiries regarding<br /> the sampling, analysis and data preparation can be directed to the address above.<br /> <br /> Notes<br /> 1. Dissolved iron (DFe) underway data (nM).<br /> 2. All surface Fe analyses were performed using a flow injection - chemiluminescence (FI-CL) technique based on the luminol reaction using dissolved oxygen as the oxidant (Bowie et al., 1998).<br /> 3. All underway samples taken torpedo fish towed at 0.5-1 m below the surface.<br /> 4. The detection limit of the FI-CL method was 0.04 nM.<br /> 5. The analytical blank varied between 0.09 and 0.24 nM over 13 d with a mean standard deviation of 0.013 nM.<br /> 6. Contamination (suspected to be from the ship itself) resulted in a practical limit of detection for the underway mapping of 0.10-0.20 nM, which was monitored daily.<br /> 7. Out-of-patch locations determined by absence of SF6 signal. Nevertheless, continuous tracking between high Fe within patch and almost two orders lower Fe out of patch may lead to memory effect contamination of the low values for out of patch. Therefore rejections of 61 suspect out of patch \"contaminated\" samples<br /> 8. A '<' symbol indicates that the concentration was below the practical limit of detection.<br /> 9. The timing of samples collected from the underway system were adjusted for lag time delays due to surface water pumping and analysis (4.0-6.5 min).<br /> 10. Decimal time is given as days in February 1999 (GMT), with 1 February 1999 0:00 = 1.0000.<br /> 11. Latitudes and longitudes are taken from the DAS on RV Tangaroa (no Lagrangian correction).<br /> 12. Each worksheet corresponds to one mapping session.<br /> <br /> References:<br /> Bowie, A.R., Achterberg, E.P., Mantoura, R.F.C., Worsfold, P.J., 1998.<br /> Determination of sub-nanomolar levels of iron in seawater using flow injection<br /> with chemiluminescence detection. Analytica Chimica Acta 361, 189-200.<br /> <br /> Bowie, A.R., Maldonado, M.T., Frew, R.D., Croot P.L., Achterberg, E.A., Mantoura,<br /> R.F.C., Worsfold, P.J., Law, C.S., Boyd P.W., The Fate of Added Iron during a<br /> Mesoscale Fertilisation Experiment in the Southern Ocean, Deep-Sea Research II (2001),<br /> SOIREE special issue, in the press.<br /> <br /> Note<br /> Values in brackets ('[ ]') were suspected to be contaminated<br /> <br /> <strong>Data from original Pre-release Site Survey Notes columns below</strong></em></p> <pre> <em> date time Notes 19990208 0021 Ship moving slowly 19990208 0202 nd 19990208 0330 nd 19990208 0414 nd 19990208 0500 Ship moving slowly 19990208 0530 nd 19990208 0907 nd 19990208 0955 nd 19990208 1000 nd 19990209 1235 Below LOD 19990209 1243 Below LOD 19990209 1308 nd Mean 0.08 Std. Dev. 0.03 n 10 2 rejections </em></pre> <p> </p> <p> </p> <p> </p>
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