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Buenos Aires to Hamburg freight CO2 emissions
One tonne of cargo shipped Buenos Aires (ARBUE) to Hamburg (DEHAM) by sea emits 92.3 kg CO2e well-to-wake at GLEC v3.2 default factors. The same tonne by air emits 6,992 kg — roughly 76x the sea number.
Lane noteRiver Plate to North Europe — service typically calls at Montevideo and Rio Grande en route. Bulk soybean volumes dwarf containerised cargo by tonnage; the lane carries ~14% of Argentina-EU trade.
Per-tonne CO2e by mode
Sea freight
Container ship 4,000-8,000 TEU + bulk carriers
- Distance
- 12,300 km
- Factor (WTW)
- 7.5 g CO2e/tkm
- Per shipment
- 1 t × 12,300 km
- Factor source
- GLEC v3.2 container 8,000-15,000 TEU (Post-Panamax, WTW)
Air freight
Long-haul belly cargo
- Distance
- 11,500 km
- Factor (WTW)
- 608 g CO2e/tkm
- Per shipment
- 1 t × 11,500 km
- Factor source
- GLEC v3.2 long-haul belly cargo allocation (WTW)
Mode comparison
On the Buenos Aires to Hamburg lane, air freight emits about 76 times more CO2e per tonne than sea freight at GLEC v3.2 defaults. The gap is driven by the WTW factor difference between long-haul belly cargo (608 g CO2e/tkm) and a Container ship 4,000-8,000 TEU + bulk carriers (7.5 g CO2e/tkm), partly offset by the shorter great-circle air routing.
Try this in the calculator
These numbers are GLEC v3.2 defaults at 1 tonne. Change weight, vessel class, or load factor in the calculator and see the per-mode CO2e update under ISO 14083:2023 data quality tiers.
Methodology references
- Methodology — GLEC v3.2 emission factors and ISO 14083 data quality tiers
- GLEC v3.2 in practice — three worked emission calculations
- Per-class container ship CO2 factors by TEU range
- What changed in GLEC v3.2 vs v3.0 and v3.1
- Glossary — WTW vs TTW vs WTT, ISO 14083 data quality tier definitions
- The 2026 State of Freight Emissions Report
- All trade-lane CO2 pages