This project involves a 1 x N fiber sensor array for subsurface CO2 monitoring in connection with carbon sequestration. The number density for carbon dioxide is related to the amount of light absorbed as a function of wavelength. Working near the 2 mm wavelength provides strong absorption features which allow subsurface CO2 concentration measurements to be made in as little as 0.5 m. Measuring the normalized transmission allows on to calculate the number density. Using the line strength and line shape parameters, the concentration can be calculated.

Updated: June 3, 2013 17:14