Development of differential absorption lidar (DIAL) for detection of CO₂, CH₄and PM in Alberta

Recent Advances Toward Transparent Methane Emissions Monitoring: A Review

“…Proximal imaging spectroscopy methods are becoming increasingly popular as a cost-effective way to capture unknown, fugitive emissions, produce imagery to characterize sources, as well as estimate methane emissions. − A recent hyperspectral method can capture both known and unknown sources by simultaneously sampling meteorological variables, and methane and nitrous oxide in the 1.0–5.5 μm midwave range and the 7.7–9.5 μm longwave range to estimate emission flux from a single instrument . Hand-held and mobile spectral devices are also being developed that utilize differential absorption lidar (DIAL) to detect, locate, and quantify carbon dioxide and methane emissions from oil and gas facilities. , Both methods are used to scan scenes, take “snapshots” to locate fugitive leaks, and assess source emissions. Ideal samples are captured when conditions allow for a distinct emission enhancement that can be easily separated from the background .…”

“… 69 Hand-held and mobile spectral devices are also being developed that utilize differential absorption lidar (DIAL) to detect, locate, and quantify carbon dioxide and methane emissions from oil and gas facilities. 35 , 68 Both methods are used to scan scenes, take “snapshots” to locate fugitive leaks, and assess source emissions. Ideal samples are captured when conditions allow for a distinct emission enhancement that can be easily separated from the background.…”