Overview
Data Quality Indicator is based on guidance from the Smart Freight Centre (SFC) and the World Business Council for Sustainable Development (WBCSD). SFC runs the Global Logistics Emissions Council (GLEC) programme that produces the GLEC Framework which serves as the primary industry guideline how to implement ISO 14083. You can read the complete SFC end-to-end guidance here: https://www.smartfreightcentre.org/en/projects/completed-project-publications/end-to-end/
Data Quality Indicator is "a composite indicator, approximating the extent to which information represents reality. The audience of any emissions report should be aware of the data type and quality involved in the calculation of GHG impacts. This is crucial as the communicated numbers are then placed in a concept of “confidence” as to how well they reflect reality.
To create transparency on data quality, a tiered quality ranking indicator should be applied to the TOC and TCE variables (Table 4 and Table 5). This is a separate, more detailed indicator than the ISO 14083 “primary/modeled/ default” qualification and follows the logic of the Pathfinder Framework for data quality, with adjustments to reflect the specificities of the logistics industry.
The resulting key performance indicator (KPI) will create more clarity on the various data sources and the level of confidence an audience can have in the communicated amount of total CO2e within an end-to-end supply chain." p.19 SFC End-to-End GHG Reporting of Logistics Operations
Shipment leg calculation
Each shipment leg (transport chain element) is given a level from 1-4 based on the combination of the data quality of each component describing the leg and related transport operations:
Origin-destination
Cargo weight
Transport operations emissions intensity factor
| 4 - Unsatisfactory | 3 - Sufficient | 2 - Good | 1 - Excellent |
Origin–destination | • Country level | • City level | • Postal code or planned distance | • Postal code/ coordinates/ planned distance |
Weight | • Estimated | • Estimated | • Actual | • Actual |
Emission intensity factor | • Proxy | • Default value | • Modeled or carrier- specific annual emission intensity factor | • Carrier-specific emission intensity factor updated monthly or quarterly or as frequent as deemed necessary |
Shipment calculation
The data quality of a shipment (end-to-end transport chain) is calculated using a weighted average of the individual data quality of each shipment leg (transport chain element) based on the respective emissions of each shipment leg within the shipment.
With this approach, the shipment leg's data quality with the highest emissions will be of most significance to the aggregated data quality value of the end-to-end shipment.
