From science to ethics to action

I’ve been reading the admirably lucid report of the Australian Climate Commission which Gareth highlighted recently, and reflecting on its restrained exposition of the current state of the science. One couldn’t ask for a clearer or more accessible statement within its 70 page range.

At the same time I’ve started reading a book by philosopher Stephen Gardiner (pictured). It’s titled A Perfect Moral Storm: The Ethical Tragedy of Climate Change and I’ll be reviewing it in due course. Why I mention it here is because the first proposition he sets out in his preface accorded with what was floating around in my mind as I read the Commission’s report. He notes that we are currently accelerating hard into the most serious environmental problem humanity has ever faced. Yet, after twenty years of awareness we are neither slowing down nor stabilizing, let alone reducing our output to the problem. Rather we are continuing to add more fuel to the fire, ever faster. “This, arguably, is the most striking fact of our time.”

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Hansen’s parting shot: show leadership, John Key

Before he left New Zealand, Jim Hansen wrote an open letter to prime minister John Key on behalf of the youth of New Zealand, and specifically 350.org. It’s well worth reading in full, because it encapsulates the case for taking action here, and now. I would be most interested in seeing a meaningful response from Key, but — as they say — I’m not holding my breath. Here’s the letter:

Dear Prime Minister Key,

Encouraged by youth of New Zealand, especially members of the organization 350.org, I write this open letter to inform you of recent advances in understanding of climate change, consequences for young people and nature, and implications for government policies.

I recognize that New Zealanders, blessed with a land of rare beauty, are deeply concerned about threats to their environment. Also New Zealand contributes relatively little to carbon emissions that drive climate change. Per capita fossil fuel emissions from New Zealand are just over 2 tons of carbon per year, while in my country fossil fuel carbon emissions are about 5 tons per person.

However, we are all on the same boat. New Zealand youth, future generations, and all species in your country will be affected by global climate change, as will people and species in all nations.

New Zealand’s actions affecting climate change are important. Your leadership in helping the public understand the facts and the merits of actions to ameliorate climate change will be important, as will New Zealand’s voice in support of effective international actions.

The fact is that we, the older generation, are on the verge of handing young people a dynamically changing climate out of their control, with major consequences for humanity and nature. A path to a healthy, natural, prosperous future is still possible, but not if business-as-usual continues.

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No turning back by Fed Farmers heroes

This, from Don Nicolson, president of Federated Farmers, appropriately titled In denial over denial, slipped under the radar last week while I was watching the ACT car crash.

Recently Climate Change Minister Dr Nick Smith added another target — a 50 percent reduction below 1990 levels by 2050. When these targets are missed I doubt reporters will be doorstepping octogenarian ex-cabinet ministers for a ‘please explain’.

I agree that the targets will probably be missed. And I too would like to be able to ask the hard questions in 2050. But the explanation is not too hard to find. Farmers, amongst others, get free credits with no incentive to reduce emissions. Idiot/Savant at No Right Turn has done the legwork here, here, and here . Don Nicolson continues:

There is one way to get emissions 73 percent below current levels and that’s to turn the clock back to 1946. A time when there were 1.7 million New Zealanders, fewer motor vehicles and overseas travel was by flying boat or ocean liner. Let’s focus on what we can control — efficient resource use.

I agree that more efficient resource use is required Don. Furthermore I am delighted to infer from your comments that no goad or incentive is required and that purest altruism will drive farmers towards that efficiency. As Charlie Pedersen, previous president of Federated Farmers, said: You are all climate change heroes.

A ton too far (more bad news)

At the Climate Futures Forum in Wellington a couple of weeks ago, David Karoly discussed the idea of considering carbon emissions as a “stock” problem, not a “flow” problem. If we want to give ourselves a 75 percent chance of coming in below a 2ºC rise in the global average temperature, then we (as in all humanity) can emit around one trillion tonnes of CO2 (for more see Meinshausen et al here, discussed in the context of emissions targets at HT in this post). It doesn’t much matter when we do the emitting, because CO2 hangs around in the atmosphere for a long time, but stick to that limit we must if we’re serious about avoiding damaging warming. I like that way of thinking about the issue, as I noted in my report on the Forum, but it seems that I may have been rather optimistic about the height of the ceiling we’re living under, and our chances of hitting a 2ºC target. A new study by a team of Canadian climate modellers, Arora et al, Carbon emission limits required to satisfy future representative concentration pathways of greenhouse gases in Geophysical Research Letters, 38 (5) DOI: 10.1029/2010GL046270 (pdf here), suggests that:

…we have already surpassed the cumulative emission limit and so emissions must ramp down to zero immediately. The unprecedented reduction in fossil‐fuel emissions implied by either of these scenarios suggests that it is unlikely that warming can be limited to the 2°C target agreed to in the 2009 Copenhagen Accord.

Bugger.

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Routefinding the future: reflecting on the climate futures forum

Two busy days in Te Papa last week, and a lot to think about. The Climate Futures Forum organised by the Climate Change Research Institute at VUW was fascinating and disturbing in equal measure. Fascinating because it’s hard not to be interested when a lot of very smart people are feeding you information, and disturbing because they provided a stark reminder of how hard is the task that confronts us all. Below the fold: some reasonably random thoughts on the forum, interviews with some of the key speakers, and a summing up based on Jonathan Boston‘s remarks at the close of the forum.

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