Great Barrier Reef survival “requires 25% CO2 cut”

3 thoughts on “Great Barrier Reef survival “requires 25% CO2 cut””

  1. “We’ve seen the evidence with our own eyes. Climate change is already impacting the Great Barrier Reef,” Terry Hughes, director of the ARC Centre of Excellence for Coral Reef Studies at James Cook University, said in a briefing to Australian MPs on Tuesday.

    OK, the climate does change, and I would expect that to affect things like the Great Barrier Reef.

    But what has that got to do with CO2?
    The climate has been warming from the Little Ice Age in about 1700.

    I’m not sure anyone can prevent the Earth’s climate from changing.

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  2. Mr Roff,

    you can debate the science, or even the correctness of the records or algorithyms that are used to push back the records to beyond the early 1800’s but several studies do show that global average temperatures have been increasing steadily since the 17th century,see Huang (2004). , Geophys. Res Lett., 31: L13205 and wikipedia “global warming” has a nice montage of lots of different guestimates of the global average temperarture rise. Whether man made CO2 emmissions are the reason is an entirely different dispute. It can be argued successfully in both directions, ie

    1) man made emmissions of CO2 were so small in the 17th and 18th centuries that what is being shown is an underlying rise or:

    2) CO2 emmissions from man made industrial processess have been contributing to a constant rise since the beginning of the 1600’s

    both are equally valid arguments from temperature rise alone.

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