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View Diary: James Hansen: Less than 10 Years Left to Reduce CO2 (243 comments)

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  •  Try not to get overly fixated on Gilbraltar . .. (0+ / 0-)

    feel free to use the Wikipedia rankings instead . . . .

    Which show that the USA is bad, but not really the worst of the bunch.  

    With not too much effort, we'll be in respectable company - which is the direction we're heading despite absolutely no top-down guidance from the government.

    And about the manufacturing in China contributing to huge coal-based carbon emissions - I am doubtful about that - their advantage is cheap labor (e.g., kids sewing Nike's) that is not really all that carbon intensive.

    Much of their emissions comes from a huge boom in concrete production, automobiles, their own consumerism, etc.

    •  Neither data set is very good (0+ / 0-)

      The wikipedia data is only CO2 emissions (for some countries CO2 is 90% of greenhouse gas emissions, for others it is less than 50%) and the footprint graphic gives a distorting impression of per capita use for which I pointed out the so-called "top" Gibraltar as one example - their apparently extravagant emissions being explained by their relatively low fuel taxes and fuel sales to tourists.

      And neither data set uses consumption-based accounting.

      You don't think manufacturing in China of products used in other countries is much of their emissions total. I agree a majority of the increase in emissions in that country over the past decade is internal consumption, but the emissions used to produce exports are still significant.

      Unfortunately, such accounting of emissions is not simple - so in the research where it has been done, the data is fairly old. For example, Caldeira and Davis ("Consumption-based accounting of CO2 emissions", 2009) wrote "in 2004, 19% of the CO2 emitted to support production of goods and services consumed in the United States was emitted outside US territorial borders, whereas 28% of China's territorial CO2 emissions supported production of goods and services consumed outside of China." There really isn't much consumption-based accounting of emissions research with newer data than that.

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