Tag: NZ

On Lignite: Elder not better

Since Don Elder thinks it inappropriate for the visiting James Hansen to comment on the morality of the proposed lignite development in Southland, let me, a fellow New Zealander, say that I find the morality of the development indefensible and all the special pleading offered by Elder doesn’t alter the case.

There is evidence that emissions of greenhouse gases from human activity are already causing hardship to some poorer populations of the world. There is little doubt that they will deliver today’s young and their children a world under pressure from immense and adverse changes which few of us would wish on them. That’s the basis of Hansen’s forthright comments on the morality of continuing to burn fossil fuels. If you want a more eloquent statement than he is accustomed to make have a look at what Norwegian novelist Jostein Gaarder said at a panel he shared with Hansen at the 2010 PEN World Voices Festival. I quoted him at some length in this post, but the essence of his speech was in these words:

“You shall love your neighbour as you love yourself. This must obviously include your neighbour generation. It has to include absolutely everyone who will live on the earth after us. The human family doesn’t inhabit earth simultaneously. People have lived here before us, some are living now and some will live after us. But those who come after us are also our fellow human beings…We have no right to hand over a planet earth that is less worth than the planet that we ourselves have had the good fortune to live on.”

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Listener gets serious about sea level

As I walked past the magazine stand at the supermarket this week my eye was caught by the front cover of the this week’s Listener (on sale last week). “Rising sea levels & extreme weather — why NZ needs to get serious,” it said. A cautious peek inside suggested Ruth Laugeson’s article might deserve a comment on Hot Topic so I parted with four dollars and brought it home to look more closely.  It does indeed deserve mention here if only because it’s the sort of straightforward treatment of climate change that we should be able to expect of serious journalism. Laugeson has been reading Mark Hertsgaard’s book Hot: Living Through the Next Fifty Years on Earth, which I reviewed a few weeks back on Hot Topic. Hertsgaard argues that we must plan adaptation to the now unavoidable changes at the same time as working to avoid much worse and likely unmanageable change.

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Treadgold gets it (nearly, but for $30bn) right

Don’t get too excited, but I agree with Richard Treadgold when he says of the gazetting of a ’50 by 2050′ emissions target by the New Zealand government that:

Noting that 39 years remain in which to achieve these so-called “reductions”, the gazetting strikes us as primarily a marketing exercise rather than a sincere attempt to influence the climate.

Full of hope and joy at this unwonted sagacity I read on to where Treadgold complains about a lack of references:

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The Climate Show #12: twisters, Olaf on ozone, and Google in the sun

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Ozone is the centrepiece of our show this week, with Dr Olaf Morgenstern of NIWA’s Central Otago atmospheric science lab (celebrating its 50th birthday at the moment) explaining the ins and outs of the ozone holes north and south, and their impacts on the climate system. Plus tornadoes, heatwaves, UN negotiations at an impasse, more melting in the Arctic, airships, see-through solar cells and Google’s solar towers. No John Cook this time — he’s been too busy launching his book (good luck with that John!).

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Alley’s documentary: upbeat and optimistic

Richard Alley’s book Earth: The Operators’ Manual, which I reviewed recently, was written as a companion to a PBS documentary of the same name. The documentary has recently screened in the US and is now available for viewing here. The broad themes are the same as those of the book. They’re not complicated: taking our energy from fossil fuels has caused climate change, but there are clean energy alternatives more than adequate to human needs and the sooner we move to deploy them the better.

Funded by the National Science Foundation, the documentary takes Alley to many places and countries, including New Zealand. He dwells on the human need for energy, the kind of energy demands a growing population will make, and the ultimate inability of fossil fuels, a limited resource, to meet that demand even if we could carry on burning them with impunity. But we can’t, and Alley explains why. A visit to the Franz Josef and Tasman glaciers, with some great photography, is part of what he uses to explain the real world impact of changing levels of CO2. A fascinating visit to the national ice core laboratory in Denver, Colorado demonstrates that today atmospheric CO2 is at a level not seen in cores that go back as far as 400,000 years – far above them, in fact. Then it’s back to New Zealand as, against the background of Rotorua thermal activity, Alley explains the isotopic evidence that backs up the relative volume measurements to confirm that the increased CO2 is the result of burning fossil fuels, dwarfing natural volcanic processes.

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