This COBE_Anonymized_emissions.csv file contains anonymized emissions measurements collected by aerial vendors across multiple campaigns for the Colorado Ongoing Basins Emission (COBE) study. The data has been processed to ensure confidentiality for site operators, while retaining as much metadata as possible necessary for analysis and modeling replications. Facility names and locations have been removed and replaced with an anonymized facility identifier. This way, emissions from similar facilities share a unique identifier. Maintenance emissions (which are treated differently when developing a predictive model) are included, while emissions that are determined to be from non-production sites are not. Measurements that do not align with reported oil/gas facilities are also excluded from this file.

Important fields:

• Anonymized_Facility_ID: 8-character identifier generated using a hash function
• Season: Flight campaigns are grouped by season of Summer, Spring, Fall, Winter, or blank. Blank values indicate that the data is taken from another study with different flight timing then those done specifically for COBE.
• Basin: Geographic basin in which the measurement was taken. For the COBE study, oil/gas basins were grouped into three categories, Denver-Julesberg (DJ) basin, Piceance basin, and 'other', which includes everywhere else in Colorado.
• Equipment type: For Bridger, this reflects the equipment type reported in their dataset. For GHGSat and Insight M, the equipment type is listed as unknown unless it was specified by the operator.
• Emission rate (kg/h): Observed emission rate by aerial measurement, rounded to two decimal points.
• Emission rate (upper & lower) 95CI: 95% confidence interval bounds, both upper and lower.
• PS: Prototypical Site, classification assigned to facilities of different configurations (see COBE report main text)
• Aircraft company: Vendor of aerial instrument product used to record measurement.
• Sensor: Specific sensor product/technology used to detect emission
• Partner? (Y/N): Indicates whether facility operators participated in the COBE study. When 'Yes', some insight into the cause analysis process should be available.
• Type of Emission: Emissions are classified into four categories for the modeling in this study: Normal Operations, Maintenance, and Fugitive/leak, and emissions with unclear or not classified causes are denoted 'Other' or 'Unknown'.
• Cause: Where information from participating operators is available, this column provides the likely determined cause of emission.

This dataset is published by the METEC (Methane Emissions Technology Evaluation Center) research group as part of the COBE (Colorado Ongoing Basins Emissions) study.
For questions or additional information about this dataset, please contact PI Anna Hodshire; Anna.Hodshire@colostate.edu