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      <gmd:descriptiveKeywords>
        <gmd:MD_Keywords>
          <gmd:keyword>
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          </gmd:keyword>
          <gmd:keyword>
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          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/BNTC">Bacteria non taxonomy-related biomass expressed as carbon per unit volume of the water column</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/VSRW">Visible waveband radiance and irradiance measurements in the water column</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/PNTX">Phytoplankton generic abundance in water bodies</gmx:Anchor>
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          <gmd:keyword>
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          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/CING">Particulate inorganic carbon concentrations in the water column</gmx:Anchor>
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          <gmd:keyword>
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          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/BNTX">Bacteria generic abundance in water bodies</gmx:Anchor>
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          <gmd:keyword>
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          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/RFVL">Horizontal velocity of the water column (currents)</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/DMST">Organosulphur and organoselenium species concentration parameters in water bodies</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/TEMP">Temperature of the water column</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/CNDC">Electrical conductivity of the water column</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/SIAT">Inorganic silicon species concentrations in the atmosphere</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/UPTH">Bacterial production in the water column</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/AMOX">Nitrification and denitrification rates in water bodies</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/NTOT">Particulate total and organic nitrogen concentrations in the water column</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/ALKY">Alkalinity, acidity and pH of the water column</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/MZBC">Microzooplankton non taxonomy-related biomass expressed as carbon per unit volume of the water column</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/IPRX">Inorganic peroxides in water bodies</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/PHAT">Inorganic phosphorus species concentrations in the atmosphere</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/ZNTC">Zooplankton non taxonomy-related biomass expressed as carbon per unit volume of the water column</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/CORG">Particulate total and organic carbon concentrations in the water column</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/UREA">Urea concentration parameters in the water column</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/PPRD">Primary production in the water column</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/MZBN">Microzooplankton generic abundance in water bodies</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/TMES">Metadata parameters</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/SIXX">Concentration of silicon species in the water column</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/CATX">Phytoplankton taxonomic biomass in water bodies</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/LRZA">Vertical velocity of the water column (currents)</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/NTRA">Nitrate concentration parameters in the water column</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/DAAW">Particulate amino acid concentrations in the water column</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/ISAT">Stable isotopes in the atmosphere</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/PHOS">Phosphate concentration parameters in the water column</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/CSLR">Solar Radiation</gmx:Anchor>
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          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/SVEL">Sound velocity and travel time in the water column</gmx:Anchor>
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          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/CYEU">Plankton biomass expressed as carbon per unit volume of the water column</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/CDTA">Air temperature</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/FVLT">Raw fluorometer output</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/ATTN">Transmittance and attenuance of the water column</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/SCOX">Dissolved concentration parameters for other gases in the water column</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/PPAB">Light absorption in the water column</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/TSED">Concentration of suspended particulate material in the water column</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/CHUM">Atmospheric humidity</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/VSRA">Visible waveband radiance and irradiance measurements in the atmosphere</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/FNTX">Fish non taxonomy-related abundance per unit volume of the water column</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/CSDE">Organic sulphur compound dynamics in the water column</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/MTAT">Metal concentrations in the atmosphere</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/R410">Ocean colour and earth-leaving visible waveband spectral radiation</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/WRAD">Radioactivity in water bodies</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/LVLT">Raw light meter output</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/SUAT">Sulphur species concentrations in the atmosphere</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/CAPH">Air pressure</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/RWCH">Precipitation chemistry</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/MTWD">Dissolved metal concentrations in the water column</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/ZNTN">Zooplankton non taxonomy-related biomass expressed as nitrogen per unit volume of the water column</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/ZNTX">Zooplankton non taxonomy-related abundance per unit volume of the water column</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/CXAA">Concentrations of carboxylic acids and carboxylates in the atmosphere</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/DALK">Concentration of alkanes in the water column</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/MBAN">Bathymetry and Elevation</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/PYTT">Plankton abundance per unit volume of the water column</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/CPWC">Chlorophyll pigment concentrations in water bodies</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/TDPX">Dissolved total or organic phosphorus concentration in the water column</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="http://vocab.nerc.ac.uk/collection/P02/current/OPBS">Optical backscatter</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
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