Data from Controlled Laboratory and Field Experiments of Flow Meters with Rigid Chambers to Measure Gas Fluxes from December 2023 to February 2024

This dataset contains the data from laboratory and field testing of protocols to measure gas fluxes through mass flow meters attached to rigid chambers sealed to the ground. These tests demonstrate the quality of the ground seal and weather conditions around the chamber are critical for the quality of the data obtained from the technique. This measurement approach is useful for monitoring emissions from advective (pressure driven, not diffusive) fluxes of gas from leaks that the mass flow meter cannot be directly connected to, for example orphan wells. This dataset contains measurements that can be used to assess the following: (1) The linearity of the mass flow meter used in the study (2) The precision of the measurement system (3) The dynamic range of the system for small gas fluxes (4) The limit of detection in both controlled laboratory conditions, as well as a range of field scenarios (5) Uncertainty from weather conditions encountered in the field.