Following this classification, the study team aggregated any plumes not matched as maintenance activities into a unified category to represent "Failure-Induced Emissions", segregated by sector (production and cumulatively exceed 250 metric tons of CO 2 e, they must be reported as large release events and meet specific requirements. Therefore, the data collected by the aerial survey is used to determine the size, frequency, and duration of emissions from upset conditions, which is later integrated into the MAES models.