New and established techniques for surface gas monitoring at onshore CO2 storage sites.

Abstract: New methods for the monitoring of CO₂ near the ground surface at geological CO₂ storage sites have been tested over areas of natural CO₂ emission. Mobile open path laser measurements and ground-surface portable infrared measurements show great promise for rapid assessment of large areas. Such techniques would help to focus more detailed investigations needed to verify the extent and source of the gas being emitted. It is envisaged that they would be used in conjunction with established field and laboratory techniques and continuous monitoring methods as part of an overall monitoring strategy for a CO₂ storage site. [Copyright &y& Elsevier]