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Dissolved noble gas concentration in the water column. Refer to dataset for element name and units.
Gas Saturation Anomaly expressed in percent. Defined as: delta_He = (C(He)/C*(He)-1)*100% where C(He) is the concentration of helium in seawater (as reported) in units of nmol/kg, and C*(He) is the solubility concentration in the same for helium at the potential temperature and salinity of the water computed from the solubility relations measured in the laboratory by Weiss (1971).