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Table 4 Emission factors for the different means of transportation considered in the study.

From: Can a shift to regional and organic diets reduce greenhouse gas emissions from the food system? A case study from Qatar

  Kg CO2 Kg product−1 km−1
Truck, 7.5–16 metric tons 0.000302
Truck, 16–32 metric tons 0.000167
Transoceanic ship, freight 0.000022
Air freight 0.00112
  1. Refrigeration is included in the estimations