18/08/2015

Beyond The Spin: Climate change

ANU and 666 Canberra
 
666 ABC Canberra and the Australian National University present Beyond the Spin, a federal election series on the issues that matter. The climate change panel included:
  • Professor Will Steffen, Executive Director of the ANU Climate Change Institute.
  • Professor Warwick McKibbin, Director of the ANU Research School of Economics.
  • Dr Frank Jotzo, Economist at the ANU Crawford School and deputy director at the ANU Climate Change Institute.
  • Dr Liz Hanna, National Centre for Epidemiology and Population Health.
  •  Bernard Keane, Canberra correspondent for Crikey.
  • Andrew MacIntosh, Associate Director of the ANU Centre for Climate Law and Policy.
Economists and scientists have urged governments to make a start on a long term, meaningful carbon policy because human survival is at stake.
Dr Liz Hanna says while individual events such as droughts, heat waves and fires cannot be attributed to climate change, rural communities are already collapsing as a result of the trends.
"There is no doubt large numbers of people will be moving because of lack of food and water," she said. "When resources become scarce, there will be conflict ... it will be very difficult to maintain civil society."
Dr Hanna told the audience that while behaviour change may seem difficult, "people never thought we were going to change slavery or smoking".
Professor Will Steffen says the cost of allowing the temperature to rise by two degrees celcius, is much larger than the most ambitious carbon scheme.
To keep below a two degree temperature rise, the world needs to cut emissions by three per cent until 2050. A four year delay would mean annual cuts of five per cent. If the world waits until to 2020 for carbon reduction, cuts of 9.5 per cent are required.
Dr Frank Jotzo said the best way to take carbon out of the economy is by a market mechanism which allows businesses to do the right thing for reasons of profit.
And Professor Warwick McKibbin discusses his proposal that shares are issued in the atmosphere to give everyone a stake in the environment.
"Whoever has the political will should lock it into the economic system through property rights and then the people react to the bottom line, you have to make everyone believe it's in their own interests.

Packing Our Target For Paris

ABC

The Federal Government has announced the emissions reduction target Australia will take to the Paris climate summit at the end of the year.
Prime Minister Tony Abbott has signed off on a target to cut emissions by 2030 by 26-28% below our 2005 levels.
The Prime Minister says the target is credible, and sets Australia in the middle of the pack out of comparable countries going into Paris.
But Labor and the Greens have both slammed the target as "pathetically weak".
Director of the Centre for Climate Economics and Policy at ANU, Frank Jotzo, told Hack that the target may have exceeded some expectations, but only because expectations were so low.
"I think there will be a sigh of relief that Australia is in fact coming to the table with a meaningful target, however it is equally clear that that target will fall short of international expectations."

Australia's target is lower than the US (26-28% by 2025), Canada and NZ (30% by 2030), and Europe (40% by 2030).
China is the world's top emitter in total and of the top 15 emitters, but Australia produces the most carbon emissions per capita.

Australia’s New Emissions Target 'Bottom Of The Pack'

The Conversation

Australia’s new emissions target is not “squarely in the middle of comparable economies" as the PM claimed. Towards the bottom of the pack of comparable countries, on key indicators. But Australia is coming to the party, and that counts for a lot.
It means the target is not obstructing international progress. And it will put the spotlight back on the opportunities for a lower carbon economy, and the policy instruments to get there.
Australia’s emissions target is a 26-28% reduction at 2030 in national emissions compared to 2005 levels. It can be viewed through different prisms and compared across different metrics.

Ratchet up later?
Fundamentals first. Australia’s 2030 target is not compatible with the internationally agreed 2C goal. It falls far short of what would be a commensurate Australian contribution to such an outcome. The Climate Change Authority in its Targets and Progress Review showed a 40-60% reduction at 2030 (relative to 2000 levels) as compatible with a 2C emissions budget.
Modelling done for our Deep Decarbonisation Pathways study, again for a 2C compatible scenario, showed Australia’s emissions cut in half at 2030.
That said, most other developed countries’ targets also fall short of the 2C mark, though generally by less than Australia’s target. The take-home message is that ambition will need to be ratcheted up in the years after the Paris climate conference.
And there is every reason to believe that this is possible. Time and time again, the experience has been that emissions reductions come cheaper than expected. Many emissions savings technologies have developed more rapidly and became cheaper more quickly than expected – just think of solar panels and LED lights.
Most existing emissions trading schemes achieve their targets at prices that are lower than was expected. Some have already lifted ambition in return.
We know that Australia can make the transition to a low carbon economy, by replacing coal in the power system with renewables (and in part nuclear if you wish, or carbon capture and storage if it works), harvesting the potential for energy efficiency across the economy, and modernising industries.

But how to get even a 26-28% reduction?
Australia currently has no credible plan for how the target could be achieved. The Renewable Energy Target has been slashed, and the Emissions Reductions Fund (ERF) in its present form will only have a marginal effect, at a big cost to the taxpayer.
It is far-fetched for the ERF subsidy mechanism to achieve significant absolute emissions reductions, and the discussion of new policy in Australia’s official statement is vague.
And so there is a risk Australia’s latest pledge will be seen as an empty promise because there is precious little to back it up.
This is by contrast to a whole suite of policies in train in China, Obama’s power plan and the EU which has the emissions trading scheme to assure that its target will be met.
To achieve reductions in domestic emissions will require significant and sustained policy effort. For reductions to be achieved cost-effectively, a consistent, broad-based policy effort is needed. And crucially, investors need to regain trust after many years of bruising political fights over climate change and the resulting policy uncertainty.
Then there is always the option of buying international emissions permits or credits, which could be part of a cost-effective solution or a cheap cop-out, depending on the rules and depending on your point of view. At the end of the day though, we need to get a transition underway domestically, and that means domestic action.

Pack position
But back to the first question: where are we in the pack, on the way to Paris?
Australia’s target for reduction in absolute emissions is significantly weaker than that of the United States and the EU, a little weaker than Canada’s, and a little stronger than Japan’s.


The choice of 2005 as a base year results in a larger percentage reduction number than if the year 2000 or (say) 2012 was used. That is because 2005 was near the high-water mark for Australia’s emissions.
A key feature of the target is that the annual rate of emissions reductions to meet the target steps up during the 2020s, to 1.9% per year. This is slightly higher than the other countries in the comparison, except the US which are targeting a reduction of 2.8% per year during the first half of the 2020s.
In per capita terms, Australia’s target implies a halving of per capita emissions over a 25-year timespan, a similar reduction rate as expected in the US and Canada, and a much faster reduction than in the EU and Japan where populations are stable.

But Australia does of course have a long way to come down, from its position of highest emissions levels per capita among all major countries. And per capita emissions would remain higher than the other countries looked at here, assuming population growth continues at the rates observed over the last decade.
A full comparative analysis would include modelling of the economic effects of Australia’s emissions target and different ways of meeting it, in comparison to other countries targets. To date such modelling is not available – and it is a fair assumption that global views of Australia’s target will be formed without reference to any economic modelling.

Expectations and perceptions
The coming weeks and months will tell, but my expectation is that internationally, Australia’s target is likely to be perceived as falling short in its ambition relative to Australia’s opportunities to cut emissions. But at the same time it will not be seen as falling catastrophically short, nor as an active obstruction of the international process.
Indeed, given the widespread perception that the Australian government looks out for the interests of the fossil fuel industry ahead of all else, the target announcement could be seen as step towards meaningful engagement on climate change.
In the eyes of the world we might just have reclaimed our traditional position as laggard in international climate change efforts, moving up a rung or two from presumed recalcitrant. There’s still quite a way to go on that ladder.

July Earth’s Hottest Month In Earth’s Hottest Year

The Washington Post

For planet Earth, no other month was likely as hot as this past July in records that date back to the late 1800s. And the global is well on its way to having its hottest year on record.
Both NASA and the Japan Meteorological Agency (JMA) have published data that show it was the hottest July on record. Since July is on average the planet’s warmest time of year, it’s fair to say temperatures this past month were at or very close to their highest point in the history of instrumental records*.
NASA’s map of July temperatures shows large areas of much warmer than normal temperatures in the Pacific Northwest, western Europe, central Asia and Africa. It also reveals the telltale signature of the powerful El Nino event, portrayed by the much warmer than normal sea surface temperatures in the eastern and central tropical Pacific.
[Heat records all over: The Northern Hemisphere is in hot water]
image2
July temperature difference from 1951-1980 average (NASA)
The heat from El Nino not only manifested itself over the tropical Pacific, but also likely boosted temperatures in other areas due to its ripple effects on global weather patterns. In sum, NASA data reveal July 2015’s average temperature edged July 2011 as the warmest on record(by 0.02 degrees), making back-to-back months of record-setting temperatures after a toasty June. Every month this year has ranked among the top four warmest in NASA’s analysis.
In JMA’s analysis, the last three months (May, June, and July) have ranked warmest on record. In fact, 5 of 7 months so far this year have ranked warmest on record in JMA’s analysis. The two other months (February and April) ranked third warmest.
image1
Time series of July temperature difference from average (Japan Meteorological Agency)
NOAA’s analysis of temperatures for July is not yet available, but should be published in the next few days. The first half of 2015 ranked as the warmest on record in NOAA’s analysis, with three of the first six months warmest on record.
[Chart-topping June extends Earth’s warmest period on record]
Considering every month this year has ranked among the top several warmest if not the warmest on record for the planet, it is almost an inevitability that 2015 will be the warmest year on record. Both the “significant and strengthening” El Nino event along with the longer-term warming trend due to rising concentrations of manmade greenhouse gases are taking temperatures to new heights.