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PostPosted: Tue Jan 30, 2007 6:43 pm 
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Joined: Sat Nov 04, 2006 10:46 pm
Posts: 7
Location: Canada
I am confused by the seemingly incorrect result I get from an EIOLCA simulation of a hypothetical railroad construction project. The program estimates 915,000 MT of CO2 emissions for the 745 Million $ project. I assume MT means a million metric tonnes. So 915,000 is 915 GigaTonnes, and round that up to 1000 GigaTonnes.
Spread that over 5 years, that is approximately 200 GigaTonnes per year.
This is approximately 20 x the Global annual Carbon Dioxide emissions from Petroleum Consumption as reported by the EIA. (10 GigaTons)

I used the "Construction" category with subcategory "Highway, street, bridge and tunnel construction"

Even if I only consider sector 230230 Highway, street, bridge and tunnel construction, i get 560,000 MegaTonnes which would be 112 GigaTonnes per year.

Total Annual Global CO2 production from all fossil fuel sources is estimated at approximately 30 GigaTonnes.

Am I making some major errors here?


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PostPosted: Wed Jan 31, 2007 10:02 am 
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Joined: Sat Nov 04, 2006 10:46 pm
Posts: 7
Location: Canada
I am replying to my own question. I figured out what MT means by hovering the cursor over the Greenhouse Gas header descripion.
MT means Metric Tons. This make sense. Sorry for the stupid question in the first place.[/list]


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