The energy use per seat for the whole trip is calculated by multiplying the total flight distance by the energy use per seat and kilometer.

380 km × 2 × 1.86 MJ per seat and km ≈ 1 414 MJ per seat

The calculation shows that the energy consumption amounts to 1 414 MJ per seat. 

Note that the energy use per seat and kilometer varies between the different flights included in the game. This is because the flight distances vary. Take-off and landing require the most energy, so the shorter the flight, the higher the energy use per seat and kilometer.

Energy use per passenger is calculated by dividing the energy use per seat by the average occupancy rate, which is a measure of how full the plane is. An occupancy rate of 80% means an average of 0.80 passengers per seat.

1 414 MJ per seat/0.80 passengers per seat ≈ 1 767.5 MJ per passenger

The calculation shows that the energy consumption amounts to 1 767.5 MJ per passenger.

The greenhouse gas emissions from jet fuel consumption are calculated by multiplying the energy consumption by the emission factor for jet fuel combustion.

1 767.5 MJ per passenger × 88 g CO₂e per MJ ≈ 155.5 kg CO₂e per passenger

The calculation shows that the round trip between São Paulo and Rio de Janeiro causes emissions of 155.5 kg CO₂e, which has been rounded to 160 kg CO₂e on the card. 

Note that unlike long-distance flights, there is no additional enhancement due to emissions at high altitude (the so-called high altitude effect) in this case. This is because the aircraft does not reach such a high altitude on this short distance.