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        <gco:CharacterString>Nearshore pH, temperature, (salinity, depth) at mooring sites in McMurdo Sound, Antarctica Dataset Description: &amp;lt;p&amp;gt;All methods are described in Kapsenberg et al. (2015). Data were collected using an autonomous SeaFET pH sensor containing Honeywell DuraFET electrodes (Martz et al., 2010). Sensor depth was 18 m with ~27 m bottom depth. Sensors sampled on a 4-hour frequency.&amp;lt;/p&amp;gt; Methods and Sampling: &amp;lt;p&amp;gt;Conversion from voltage to pH (on a total scale) was performed using a single discrete calibration sample&amp;amp;nbsp; collected via SCUBA using a 5 L GO-FLO sampling bottle. Sample collection was conducted within the first two weeks of sensor deployment, after sensor conditioning to seawater, in-situ. Samples were preserved with saturated mercuric chloride Standard Operating Procedure (SOP) 1 (Dickson et al., 2007) and analyzed for spectrophotometric pH (total scale, at 25 degrees Celsius) and total alkalinity following SOP 6b and 3b (Dickson et al. 2007). Sample salinity was measured using a calibrated YSI 3100 Conductivity Instrument. In-situ pH was calculated using the program CO2Calc [Version 1.0.1, 2010, U.S. Geological Survey] using SeaFET temperature recorded at the time of sample collection.&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;SeaFET thermistors were not individually calibrated resulting in a maximum estimated temperature offset of ~0.3 degrees Celsius.&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;All processing was conducted in R (v.3.5.1) using seacarb (v.3.2.8) to generate calibration coefficients for the sensor that were later applied to the datset.&amp;amp;nbsp;&amp;lt;/p&amp;gt;</gco:CharacterString>
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        <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/award/553633.rdf" xlink:title="PLR-1246202" xlink:actuate="onRequest">Funding provided by NSF Antarctic Sciences (NSF ANT) Award Number: PLR-1246202 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1246202</gmx:Anchor>
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