| Characteristic | Emissions in kilograms of CO² equivalent per barrel |
|---|---|
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
| - | - |
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October 2016
Worldwide
2016
* Total emissions stemming from extraction, land and water use, refining, and combustion.
Data was acquired between 2013 and 2015.
The source adds the following information on methodology:
"GHG emissions estimates are based on equivalent GHG emissions for carbon dioxide, methane, and nitrous oxide, combining these into one result using different global warming potentials (GWPs) that compare the other GHGs to carbon dioxide. (...)
The degree of uncertainty in the GHG emissions estimates modeled through the OCI depends on the quality of the data. We considered data quality within two kinds of parameters: crude assay and field-characterization methods on the one hand, and characterization of real-world operations on the other. Natural and technical variability, especially as these relate to changing operations over time, affect the quality of these OCI input data. (...)
Within three data quality elements—reliability and reproducibility, consistency and completeness, accuracy—inputs for each model were scored using [different] criteria. (...)
Discrepancies and inconsistencies in OCI model inputs can occur because of different public data sources and lack of coordinated data collection."
