Heathrow Airport: Carbon Emissions

Transport written question – answered on 1st April 2008.

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Photo of Norman Baker Norman Baker Shadow Secretary of State for Transport

To ask the Secretary of State for Transport for what reasons the Adding Capacity at Heathrow Airport consultation document did not refer to the effects of incoming international flights in estimating the likely impact of a third runway on carbon dioxide emissions.

Photo of Jim Fitzpatrick Jim Fitzpatrick Parliamentary Under-Secretary (Department for Transport)

holding answer 31 March 2008

The method used to estimate the impact of additional capacity at Heathrow on UK aviation CO2 emissions in the 'Adding Capacity at Heathrow Airport' consultation document is referenced at paragraph 2.23 of the impact assessment (annex B). Full details of the forecasting method can be found in chapter 3 of 'UK Air Passenger Demand and CO2 Forecasts', available at:

http://www.dft.gov.uk/pgr/aviation/environmentalissues/ukairdemandandco2forecasts/

There is no internationally agreed way to allocate to individual countries the CO2 emissions from international flights. For reporting purposes, the UN framework convention on climate change requires each nation to report emissions based on aviation bunker fuel consumption, which is closely related to fuel used on departing flights. To ensure consistency with historic reported totals, and to avoid double-counting CO2 emissions, our forecasts include international aviation emissions on a departing flight only basis.

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