At a high level, the framework pattern matches methane concentration observations from the CMS to simulation predictions assuming different potential sources. For each identified emission event, the potential source whose simulation most closely matches the CMS observations is taken to be the estimated source for that event. We then estimate emission rate by minimizing error between the simulation predictions from the most likely source and the CMS observations. We only produce a rate estimate when there is reasonably good alignment between the simulation and CMS observations. We have found that this measure is very useful in practice, as it lessens the impact of any simulation inadequacies (e.g., not accounting for turbulence).