Carbon Emission Reporting

Travel Analytics carbon emissions calculations are based on a formula used by the International Civil Aviation Organisation. The formula calculates carbon emissions using fuel burn, circle distance of a flight (km), flight duration (short, mid and long haul) and the class of travel.

The circle distance between the city pairs (segments) is provided by the Travel Management Company (TMC) in their air segment data.  Segments are then split into three categories: short - less than 550 km; mid - between 550 and 5500 kms; and long haul - greater than 5500 kms.  These categories are used to calculate fuel consumption, as fuel burn ratios are much higher on shorter flights than longer ones.

Also factored in is the difference between economy and premium class travel for mid and long haul flights and passenger load data as published annually by IATA.  Unfortunately, though, type of aircraft is not taken into consideration as in most cases, this data is unavailable.

All CO2 data in the reports are quoted in kilograms (kg) and available in hard copy if you download the air segments data.