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        <gco:CharacterString>Nitrate, nitrite, and nitrous oxide isotope measurements from the Eastern Tropical South Pacific ocean (NBP13-05) Dataset Description: &amp;lt;p&amp;gt;Nitrate, nitrite, and nitrous oxide isotope measurements from the Eastern Tropical South Pacific ocean (NBP13-05). The data in this dataset were published in&amp;amp;nbsp;Peters et al. (2018) and Casciotti et al. (2018).&amp;lt;/p&amp;gt; Methods and Sampling: &amp;lt;p&amp;gt;Samples were collected from a standard Niskin bottle rosette.&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;Nitrate isotope analyses were conducted by denitrifier method (Sigman et al., 2001; Casciotti et al., 2002) with updates (McIlviin and Casciotti, 2011). Nitrite was removed from samples containing more than 0.1 uM nitrite, using sulfuric acid (Granger and Sigman, 2009). Standards include USGS32, USGS34, and USGS35.&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;Nitrite isotope analyses were conducted by azide method (McIlvin and Altabet, 2005). Standards include N23, N7373, and N10219.&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;Nitrous oxide isotope analyses were conducted as described in McIlvin and Casciotti, 2010. N2O isotope measurements were calibrated against a laboratory N2O working gas.&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;The water mass analysis for the oxygen deficient zone waters was conducted as described in Peters et al., 2018, Deep Sea Research II, Estimating fixed nitrogen loss and associated isotope effects using concentration and isotope measurements of NO3-, NO2-, and N2 from the Eastern Tropical South Pacific oxygen deficient zone.&amp;lt;/p&amp;gt;</gco:CharacterString>
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            http://lod.bco-dmo.org/id/dataset-parameter/744859.rdf
	Name: CTD_cast
	Units: unitless
	Description: &lt;p&gt;cast identifier from cruise&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744860.rdf
	Name: STN
	Units: unitless
	Description: &lt;p&gt;station identifier from cruise&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744861.rdf
	Name: date
	Units: unitless
	Description: &lt;p&gt;date; formatted as yyyy-mm-dd&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744862.rdf
	Name: DEPTH
	Units: meters
	Description: &lt;p&gt;sample depth&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744863.rdf
	Name: PRESSURE
	Units: decibars
	Description: &lt;p&gt;pressure&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744864.rdf
	Name: latitude
	Units: degrees North
	Description: &lt;p&gt;latitude of sampling&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744865.rdf
	Name: longitude
	Units: degrees East
	Description: &lt;p&gt;longitude of sampling&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744866.rdf
	Name: TEMPERATURE
	Units: degrees C
	Description: &lt;p&gt;temperature&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744867.rdf
	Name: SALINITY
	Units: PSU
	Description: &lt;p&gt;salinity&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744868.rdf
	Name: SIGMA_THETA
	Units: kg/m3
	Description: &lt;p&gt;sigma-theta&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744869.rdf
	Name: SBE_OXYGEN
	Units: umol/kg
	Description: &lt;p&gt;oxygen measured by SBE&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744870.rdf
	Name: O2_SAT_mL_L
	Units: ml/L
	Description: &lt;p&gt;oxygen saturation in milliters per liter&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744871.rdf
	Name: O2_SAT_umol_kg
	Units: umol/kg
	Description: &lt;p&gt;oxygen saturation in micromoles per kilogram&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744872.rdf
	Name: AOU
	Units: umol/kg
	Description: &lt;p&gt;apparent oxygen utilization&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744873.rdf
	Name: NO3_sample_IDs
	Units: unitless
	Description: &lt;p&gt;internal reference number for sample&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744874.rdf
	Name: sulfamic_treated
	Units: unitless
	Description: &lt;p&gt;An asterisk indicates a sample was treated with sulfamic acid to remove nitrite prior to nitrate isotopic analysis&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744875.rdf
	Name: d15N_NO3
	Units: per mil vs. N2
	Description: &lt;p&gt;delta 15N of nitrate&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744876.rdf
	Name: d15N_NO3_sd
	Units: per mil
	Description: &lt;p&gt;standard deviation of d15N_NO3&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744877.rdf
	Name: d18O_NO3
	Units: per mil vs. VSMOW
	Description: &lt;p&gt;delta 18O of nitrate&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744878.rdf
	Name: d18O_NO3_sd
	Units: per mil
	Description: &lt;p&gt;standard deviation of d18O_NO3&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744879.rdf
	Name: d15N_NO2
	Units: per mil vs. N2
	Description: &lt;p&gt;delta 15N of nitrite&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744880.rdf
	Name: d15N_NO2_sd
	Units: per mil
	Description: &lt;p&gt;standard deviation of d15N_NO2&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744881.rdf
	Name: d18O_NO2
	Units: per mil vs. VSMOW
	Description: &lt;p&gt;d18O of nitrite&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744882.rdf
	Name: d18O_NO2_sd
	Units: per mil
	Description: &lt;p&gt;standard deviation of d18O_NO2&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744883.rdf
	Name: N2O_sample_ID_1
	Units: unitless
	Description: &lt;p&gt;internal reference number for sample (replicate 1 of 2)&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744884.rdf
	Name: N2O_sample_ID_2
	Units: unitless
	Description: &lt;p&gt;internal reference number for sample (replicate 2 of 2)&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744885.rdf
	Name: N2O_conc
	Units: nM
	Description: &lt;p&gt;N2O concentration&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744886.rdf
	Name: N2O_conc_sd
	Units: nM
	Description: &lt;p&gt;standard deviation of N2O_conc&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744887.rdf
	Name: N2O_SP
	Units: per mil
	Description: &lt;p&gt;N2O site preference&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744888.rdf
	Name: N2O_SP_sd
	Units: per mil
	Description: &lt;p&gt;standard deviation of N2O_SP&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744889.rdf
	Name: d15N_N2O
	Units: per mil vs. N2
	Description: &lt;p&gt;delta 15N of N2O&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744890.rdf
	Name: d15N_N2O_sd
	Units: per mil
	Description: &lt;p&gt;standard deviation of d15N_N2O&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744891.rdf
	Name: d18O_N2O
	Units: per mil vs. VSMOW
	Description: &lt;p&gt;delta 18O of N2O&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744892.rdf
	Name: d18O_N2O_sd
	Units: per mil
	Description: &lt;p&gt;standard deviation of d18O_N2O&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744893.rdf
	Name: d15Na
	Units: per mil vs. N2
	Description: &lt;p&gt;delta 15N of N2O-alpha&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744894.rdf
	Name: d15Na_sd
	Units: per mil
	Description: &lt;p&gt;standard deviation of d15Na&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744895.rdf
	Name: d15Nb
	Units: per mil vs. N2
	Description: &lt;p&gt;delta 15N of N2O-beta&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744896.rdf
	Name: d15Nb_sd
	Units: per mil
	Description: &lt;p&gt;standard deviation of d15Nb&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744897.rdf
	Name: Kelvin
	Units: K
	Description: &lt;p&gt;Temperature in Kelvin&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744898.rdf
	Name: ln_Ko
	Units: unitless
	Description: &lt;p&gt;natural logarithm of Ko, the solubility of N2O in seawater as per Weiss and Price, 1980&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744899.rdf
	Name: Ko
	Units: mol N2O/kg/atm
	Description: &lt;p&gt;solubility of N2O in seawater, as per Weiss and Price, 1980&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744900.rdf
	Name: N2O_sat_mol_kg
	Units: mol N2O/kg
	Description: &lt;p&gt;concentration of N2O at equilibrium with atmosphere at in situ temperature and salinity&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744901.rdf
	Name: N2O_sat_nmol_L
	Units: nmol N2O/L
	Description: &lt;p&gt;concentration of N2O at equilibrium with atmosphere at in situ temperature and salinity, converted to nmol/L&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744902.rdf
	Name: delta_N2O
	Units: nmol N2O/L
	Description: &lt;p&gt;N2O supersaturation, deltaN2O = [N2O]obs - [N2O]sat&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744903.rdf
	Name: ESPIW
	Units: %
	Description: &lt;p&gt;% Eastern South Pacific Intermediate Water, as per Peters et al., 2018 Deep Sea Research II&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/744904.rdf
	Name: ESSW
	Units: %
	Description: &lt;p&gt;% Equatorial Subsurface Water, as per Peters et al., 2018 Deep Sea Research II&lt;/p&gt; 
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&amp;lt;p&amp;gt;The water mass analysis for the oxygen deficient zone waters was conducted as described in Peters et al., 2018, Deep Sea Research II, Estimating fixed nitrogen loss and associated isotope effects using concentration and isotope measurements of NO3-, NO2-, and N2 from the Eastern Tropical South Pacific oxygen deficient zone.&amp;lt;/p&amp;gt;</gco:CharacterString>
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