Category: Climate politics

The Climate Show #9: Barry Brook, hot spots and melting ice

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With the terrible events in Japan uppermost in everyone’s mind, this week’s Climate Show goes nuclear, examining the prospects for the future of nuclear energy with Professor Barry Brook from the University of Adelaide. John Cook looks at what the tropical troposphere hot spot really means, and Gareth and Glenn look at mass loss from the Greenland and Antarctic ice sheets, a record ozone hole over the Arctic, and review last winter’s climate numbers.

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Show notes below the fold.

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Let the wind blow (again)

Lester Brown doesn’t let up when he’s published a book. Over successive months his Earth Policy Institute produces follow-up articles focusing on particular topics. The latest is on wind power, which was strongly advocated in his recent book World on the Edge as the early leader in the move to renewable sources of energy. What he has to say about the global development of wind power ties in with my recent update on wind power in New Zealand and is well worth reporting here. What follows is mainly extract from his article.

There are now more than 70 countries developing wind resources. Between 2000 and 2010, world wind electric generating capacity increased at what Brown describes as frenetic pace from 17,000 megawatts to nearly 200,000 megawatts.

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Garnaut: no reticence on risk

I appreciated the candidness with which economist Ross Garnaut introduced and concluded his recently released update on the science of climate change, one of a series of updates to his 2008 Review which have been commissioned by the Australian government. In the introduction he explains how he began his original Review with no strong views and no more than a common knowledge of climate change science. He read a fair bit of climate science in the course of preparing the Review, including paying due attention to sceptics with genuine scientific credentials, and his investigations led him to the premise for his Review that “on a balance of probabilities” the central conclusions of the mainstream science were correct.

Since then he has moved in his thinking to regard it as highly probable that most of the global warming since the mid-20th century is human-caused. Further, he declares that he would now be tempted to say that those who think that temperatures and damage from a specified level of emissions over time will be larger than is suggested by the mainstream science are much more likely to be proven correct than those who think the opposite.

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Whispering wind #2

The arrival of a Wind Energy Association Newsletter suggested it might be time for an update on wind power in New Zealand. It’s nearly two years since I wrote about wind farm prospects in my own Waikato region. The first of those wind farms, at Te Uku, is now up and running. The Prime Minister was present at the opening on 11 February, and is reported by the wind energy association as saying “In a world where we want to get away from fossil fuels and ultimately have a cleaner, greener environment, wind is a tremendous technology for us.”

The newspaper report, however, failed to report that remark and focused on his use of the occasion to defend the Government’s wish to privatise up to 49% of Meridian Energy. It also reported him as saying that new technology and generation such as Te Uku would only be introduced “when it pays for itself”. One would like to think that at this point he pointed out that fossil fuel-generated electricity doesn’t pay for itself but is heavily subsidised by future generations, but if he did the paper didn’t think it newsworthy.

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Garnaut update on climate science: avoiding high risks will require large changes

Ross Garnaut, the Australian government’s climate change adviser, today published the science update [PDF] to his 2008 report. It warns that recent research has “confirmed and strengthened” the view that the earth is warming and humanity is to blame. Temperatures and sea level continue to rise, and there are worrying signs that a 2ºC target may no longer be “safe”. Garnaut comments that it is an “awful reality” that his 2008 review did not overestimate the risks of climate change. Most telling, though, are the update’s final lines. After a section discussing scientific reticence as a possible reason (pace Hansen) why published science appears to systematically underestimate the extent and dangers of probable climate change, Garnaut states:

We should, however, be alert to the possibility that the reputable science in future will suggest that it is in Australians’ and humanity’s interests to take much stronger and much more urgent action on climate change than might seem warranted from today’s peer-reviewed published literature. We have to be ready to adjust expectations and policy in response to changes in the wisdom from the mainstream science.

In other words, don’t bank on getting an easy ride. Full details below the fold.

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