Mitigating against climate change: Improved aviation practices

Question 1

current aviation practices pose an issue to our climate because: (2 items)

Answer 1

• jet engines produce water vapour and CO2 gas, both GHGs

- lack of taxation on aviation fuel means this transport is widely used cheaply and so means greater combustion

Question 2

ways in which we can mitigate aviation CO2 emissions: (4 items)

Answer 2

• route optimisation
• air craft efficiency
• biofuels
• improved operating procedures

Question 3

case study for route optimisation:

Answer 3

• European Sky
• proposed 15 years ago
• if used, 12 million tonnes of CO2 would have been saved already
• scrapped because of concerns over travel time and lobbying by aviation companies

Question 4

case study for air craft efficiency:

Answer 4

• New Boeing 787 Dreamer

- 20% more fuel efficient

Question 5

case study for biofuels:

Answer 5

• can lower emissions by 50-95%

- tests showed 46kg of fuel was saved in 1h 30min than if normal fuel was used

Question 6

aviation contributes to …..% of global CO2 emissions

Answer 6

25%

Question 7

lowering cruising speeds could save …..% of emisions

Answer 7

5%