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. 2023 May 2;57(19):7382–7390. doi: 10.1021/acs.est.2c08582

Figure 4.

Figure 4

Emission reduction of LDAR scenarios with continuous monitoring + OGI with/without satellite for (a) base case (long duration of high-emitters) and (b) sensitivity analysis S3 simulations (short duration of high-emitters). LDAR type A is networks of sensors + 1× OGI. LDAR type B is networks of sensors + satellite with 50 kg/h detection threshold and daily revisits + 1× OGI. LDAR type C is continuous monitors at all sites + 1× OGI. LDAR type D is continuous monitors at all sites + satellite with 50 kg/h detection threshold + 1× OGI. LDAR type E is continuous monitors only at tank batteries + satellite with 50 kg/h and daily revisits at all facilities + 1× OGI at all facilities. Horizontal black lines indicate the reduction of OGI-only LDAR programs. The color indicates detection thresholds of the continuous monitoring sensors.