CarbonPass app methodology
Emissions data for flight routes
| Operator | Route: Jersey to… | Aircraft | Emissions for single economy journey for one person (kg CO2e) |
| British Airways | Heathrow | Airbus A319 & A320 | 56.6 |
| Easyjet | Glasgow | Airbus A319 & A320 | 96.1 |
| Gatwick | Airbus A319 & A320 | 49.8 | |
| Liverpool | Airbus A319 & A320 | 68.6 | |
| Luton | Airbus A319 & A320 | 54.8 | |
| Manchester | Airbus A319 & A320 | 62.9 | |
| Blue Islands | Birmingham | ATR 42-320 & ATR 72-500 | 40.0 |
| Bristol | ATR 42-320 & ATR 72-500 | 27.6 | |
| East Midlands | ATR 42-320 & ATR 72-500 | 42.4 | |
| Exeter | ATR 42-320 & ATR 72-500 | 22.5 | |
| Guernsey | ATR 42-320 & ATR 72-500 | 8.2 | |
| Southampton | ATR 42-320 & ATR 72-500 | 23.7 |
Methodology used for these calculations
The ICAO Carbon Emission Calculator requires that the user input the airports of origin and destination for a direct through flight. This is then compared with the published scheduled flights to obtain the aircraft types used to serve the two airports concerned and the number of departures per aircraft. Each aircraft is then mapped into one of the 312 equivalent aircraft types in order to calculate the fuel consumption for the trip based on the great circle distance between the airports involved in the journey.
The passenger load factors, and passenger to cargo ratios, obtained from traffic and operational data collected by ICAO, are then applied to obtain the proportion of total fuel used which can be attributed to the passengers carried. The system then calculates the average fuel consumption for the journey weighted by the frequency of departure of each equivalent aircraft type. This is then divided by the total number of economy class equivalent passengers, giving an average fuel burn per economy class passenger. The result is then multiplied by 3.16 (constant representing the number of tonnes of CO2 produced by burning a tonne of aviation fuel) in order to obtain the amount of CO2 footprint attributed to each passenger travelling between those two airports.
The full methodology can be seen here, and data is updated annually by ICAO:
