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By Jochen Voss, on
Today I found the British government's guidelines for computing the CO2 emission for different modes of transportation. I like the careful explanation of the authors' methodology.
The results are summarised in the table below. All data is for 2008, and I rounded and simplified the values to make them easier to digest. You can find the true results in the report. The values for cars (marked with an asterisk) are given in g/km, you need to divide them by the number of passengers in the car.
|mode of transportation||CO2 emission|
[g / passenger km]
|national rail||60||table 21 (page 25)|
|london underground||65||table 21 (page 25)|
|trams etc.||78||table 21 (page 25)|
|Eurostar||18||table 21 (page 25)|
|bus||107||table 17 (page 21)|
|coach||29||table 17 (page 21)|
|petrol car||207*||table 11 (page 18)|
|diesel car||198*||table 11 (page 18)|
|motor cycle||106*||table 18 (page 22)|
|domestic flights||175||table 3 (page 9)|
|short-haul flights||98||table 3 (page 9)|
|long-haul flights||111||table 3 (page 9)|
Update (2010-04-13). DEFRA reorganised their web page, so the above link does no longer work. Their reports can now be found on the Greenhouse gas (GHG) conversion factor methodology papers page. I believe that the 2008 report there is identical to what I used for the table.
This is an excerpt from Jochen's blog.
Newer entry: figures with matplotlib
Older entry: Christmas!
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