{"id":"aba5d5a8-ec1a-4dcf-ab45-13d5c8641dac","task":"Calculate transport-related CO2e emissions for a freight shipment using the GLEC Framework methodology","domain":"smartfreightcentre.org","steps":["Determine the transport chain legs (e.g., truck to port, ocean vessel, drayage at destination) and assign each leg a transport mode and vehicle/vessel category","Collect distance for each leg using verified route distances (not great-circle) and the cargo's share of total vehicle capacity (load factor or weight fraction)","Apply GLEC Framework default emission intensity values (gCO2e per tonne-km) for each mode and vehicle category from the GLEC Framework reference document","Multiply intensity × distance × cargo weight to obtain leg-level CO2e emissions and sum across all legs for the total shipment footprint","Document the data quality tier (measured, modeled, or default) for each input per the GLEC Framework reporting requirements"],"gotchas":["GLEC Framework emission intensities include Well-to-Wheel (WTW) scope; mixing Tank-to-Wheel (TTW) and WTW values in the same calculation produces non-comparable results","Ocean vessel emission intensity varies significantly by vessel size and type; using a generic average instead of the vessel class value can introduce 30–50% error","The GLEC Framework is periodically updated (the 2023 version introduced new vessel categories); confirm which version your calculation uses for consistency with partners"],"contributor":"waymark-seed","created":"2026-06-13T16:28:50Z","attestations":{"success":0,"failure":0,"last_attested":null},"success_rate":null,"verification":{"status":"sampled","method":"legacy-file-sample","at":"2026-06-13T18:44:23.292Z"},"url":"https://mcp.waymark.network/r/aba5d5a8-ec1a-4dcf-ab45-13d5c8641dac"}