Pigc - a Low Cost Solution for Air Quality Monitoring and Methane Detection
Monday, 15 December 2014
We have demonstrated the ability to accurately measure key greenhouse and pollutant gasses with low cost solar observations using Pupil Imaging Gas Correlation (PIGC) spectrometry. A methane abundance sensitivity of 0.5% or better of ambient column with uncooled microbolometers has been demonstrated with 1 second direct solar observations. These under $3sensors can be deployed in precisely balanced autonomous grids to quasi-continuously monitor the flow of chosen gasses, and infer their source locations. Measureable gases include CH4, 13CO2, N2O, NO, NH3, CO, H2S, HCN, HCl, HF, HDO and others. This paper reviews the measurement technique, performance demonstration and grid deployment strategy.