First posted January 8, 2021 For additional information, contact: NAWQA Science TeamU.S. Geological Survey12201 Sunrise Valley Drive, MS 413Reston, VA 20192–0002 DGMETA (Dissolved Gas Modeling and Environmental Tracer Analysis) is a Microsoft Excel-based computer program that is used for modeling air-water equilibrium conditions from measurements of dissolved gases and for computing concentrations of environmental tracers that rely on air-water equilibrium model results. DGMETA can solve for the temperature, salin…