22 gm Co2e per passenger kilometer
Source1: “Heat” by George Mombiot , (Penguin 2006) (He gives other references)
p146. Quotes a parliamentary answer for Co2 from different modes of travel
from London to Manchester for each passenger
Train 5.2 Kgs Co2 (70% full
Source2: http://www.timesonline.co.uk/tol/travel/business/article505946.ece
“Travelling from London to Manchester, a distance of 181 miles (290km), should
be straightforward but often it is not. “
The above can be use to give values for Co2 per passenger kilometer
Train 18 gm Co2
This seems optimistic for trains .. Richard to investigate.
Source3: http://carboncalculator.direct.gov.uk/index.html
Answers in kg co2
1000 Mj Electricity – 119
1000 Mj Gas – 53
1000 litres oil – 2690
1000 litres lpg – 1490
1000 kg coal – 2548
1000 km rail – 25 kg co2
The BP Carbon Calculator: http://www.bp.com/iframe.do?categoryId=9032780&contentId=7060112
Using the carbon calculator it is possible to put in figures to show the underlying assumptions. The calculator modifies the results according to the country chosen.
Train travel (France, Uk) assumes 40gm CO2 per passenger-kilometer
Train travel (Australia, USA) assumes 120gm CO2 per passenger-kilometer