This video is from an April 2017 trip to the Colorado River at Diamond Creek. We spent 24 hours sampling for dissolved oxygen and argon. The argon will be used to estimate the degree to which the river is in equilibrium with the atmosphere. We hope to use this information to improve our ability to model ecosystem metabolism (primary production and aerobic respiration). In the video I am using a “MIMS bong” developed by Hilary Madinger at the University of Wyoming.