Negative emissions can be observed in the "Emissions Summary" for "Yearly estimated emissions".
Steps to reproduce
This situation occurs when measurements are taken frequently. If a new emission is detected and measured between the tagging and repair of an initial emission at a site, this new emission will be tagged for future repair. However, if the measurements following this tagging do not detect the new emission because it falls below the Minimum Detection Limit (MDL), the newly tagged emission might go unreported in the latest measurement reports since the original emissions have already been repaired.
See the following image for a graphical representation.
Evidence
Emissions Summary:
Estimated Repaired emissions to remove, filtered for the particular year of 2025
Emissions summary filtered for the particular year of 2025
Estimated emissions, filtered by the year, only result in measured rates of 0
A fix will be implemented to default any negative values to 0, however, it is recommended a design enhancement to improve the handling of this situation.
Bug/Defect description
Negative emissions can be observed in the "Emissions Summary" for "Yearly estimated emissions".
Steps to reproduce
This situation occurs when measurements are taken frequently. If a new emission is detected and measured between the tagging and repair of an initial emission at a site, this new emission will be tagged for future repair. However, if the measurements following this tagging do not detect the new emission because it falls below the Minimum Detection Limit (MDL), the newly tagged emission might go unreported in the latest measurement reports since the original emissions have already been repaired.
See the following image for a graphical representation.
Evidence
Emissions Summary:
Estimated Repaired emissions to remove, filtered for the particular year of 2025
Emissions summary filtered for the particular year of 2025
Estimated emissions, filtered by the year, only result in measured rates of 0
Expected behavior
Fugitive emissions that are tagged for repairs
Inputs and Parameters
simple_test_case_1_inputs.zip simple_test_case1_parameter.zip
Version Number
V4.1.0
Additional Context
A fix will be implemented to default any negative values to 0, however, it is recommended a design enhancement to improve the handling of this situation.