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posted by martyb on Saturday July 12 2014, @06:19PM   Printer-friendly
from the jumpin'-jack-flash dept.

A just-published analysis of data received from a satellite in 2004 has shown that at least during that year, livestock in the U.S. emitted more methane into the atmosphere than did the oil and gas industry. In their article published in Journal of Geophysical Research: Atmospheres, a team of researchers from Harvard University, California Institute of Technology and the University of California studying the data note that such emissions were far higher than was reported by the U.S. Environmental Protection Agency (EPA).

Specifically, the researchers found satellite data showed livestock emitted 13 million tons of methane over the summer in 2004 (the EPA reported 9.7 million tons). They found the satellite data also showed that the combined emissions of the oil and gas industry amounted to 7 million tons (the EPA reported 9.9 million tons).

Unfortunately the sensor on the satellite was unable to show methane amounts after 2004, thus more data is not available. That will, however, change soon as a new satellite with sophisticated atmospheric gas monitoring sensors aboard is set to launch next year. More information on the role that methane plays in changing our climate can be found here.

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  • (Score: 0) by Anonymous Coward on Saturday July 12 2014, @10:23PM

    by Anonymous Coward on Saturday July 12 2014, @10:23PM (#68268)

    > It has nothing to do with global warming because cows are not releasing carbon

    This is about methane not co2. Methane has a much larger impact on global warming per ton than co2, like orders of magnitude more. But there is much less of it being created too.

  • (Score: 3, Informative) by pe1rxq on Sunday July 13 2014, @12:04AM

    by pe1rxq (844) on Sunday July 13 2014, @12:04AM (#68293) Homepage

    The carbon source for the methane still matters.
    The methane released by cows is part of a short cycle. (a bit more complex than CO2, but methane is still broken down over time).
    The extra methane comming from fossil fuels is a far bigger problem, it was not part of this short cycle before and the mechanisms breaking down methane will not get rid of it as quick as we are adding it.

    • (Score: 1) by deimtee on Monday July 14 2014, @12:16AM

      by deimtee (3272) on Monday July 14 2014, @12:16AM (#68706) Journal

      Methane has a pretty short half-life before it oxidises to CO2 and water. Either UV catalyzed, or it gets up high enough to react with ozone.
      Regardless of how much is emitted (excluding something like an ocean clathrate catastrophe) it is effectively gone in twelve years.

      If you cough while drinking cheap red wine it really cleans out your sinuses.