Ground-based remote sensing with open-path fourier- Transform infrared (OP-FTIR) spectroscopy for large-scale monitoring of greenhouse gases

Abstract

To successfully monitor carbon dioxide capture and storage facilities, it is necessary to select appropriate methods which can provide required information from different scales, both in desired resolutions and in real time. This paper will provide an assessment of open-path Fourier-transform infrared (OP-FTIR) spectroscopy as part of a hierarchical monitoring concept. The technology is introduced as a promising ground-based remote sensing technology for largescale monitoring of leakage detection. Initial tests using this method were carried out at natural analogue sites where different degassing situations are present, providing optimal conditions for evaluating OP-FTIR spectroscopy capability. The application of this technology focused on determining spatial atmospheric CO2 distribution and to help obtain insights into how CO2 spreads in the vicinity of the degassing vents using scanned images.