22/11/2021

(ScienceAlert) Warming Events Could Destabilize The Antarctic Ice Sheet Soon. Very Soon

ScienceAlertDavid Nield

(Suresh Krishna/Moment/Getty Images)

Here's another reminder of the precarious position that the world's climate and ecosystems are in: a new study estimates that global warming could push the Antarctic ice sheet past a tipping point in as little as 10 years.

In other words, the point of no return in terms of ice sheet loss is arriving earlier than previously thought, and we may well already be in the midst of it. That could have serious consequences when it comes to sea level rise globally, and the local habitats that animals in Antarctica rely on.

To get a better idea of what's happening right now, the researchers went back into the past, looking at the continent's history over the last 20,000 years – back to the last ice age – through ice cores extracted from the sea floor.

"Our study reveals that during times in the past when the ice sheet retreated, the periods of rapid mass loss 'switched on' very abruptly, within only a decade or two," says paleoclimatologist Zoë Thomas, from the University of New South Wales in Australia.

"Interestingly, after the ice sheet continued to retreat for several hundred years, it 'switched off' again, also only taking a couple of decades."

As icebergs break off Antarctica, they float down a major channel known as Iceberg Alley. Debris released from these icebergs accumulates on the seafloor, giving researchers a record of history some 3.5 kilometers (2.2 miles) under the water.

By combining this natural logbook of iceberg drift with computer models of ice sheet behavior, the team was able to identify eight phases of ice sheet retreat across recent millennia. In each case, the ice sheet destabilization and subsequent restabilization happened within a decade or so.

The results published by the researchers augment modern satellite imagery, which only goes back around 40 years: they show increasing losses of ice from the interior of the Antarctic ice sheet, not just changes in ice shelves already freely floating on the water. 

"We found that iceberg calving events on multi-year time scales were synchronous with discharge of grounded ice from the Antarctic ice sheet," says glaciologist Nick Golledge, from the Victoria University of Wellington in New Zealand.

The study showed the same sea rise pattern happening in each of the eight phases too, with global sea levels affected for several centuries and up to a millennium in some cases. Further statistical analysis identified the tipping points for these changes.

If the current shift in ice in Antarctica can be interpreted in the same way as the past events identified by the researchers, we might already be in the midst of a new tipping point – something we've seen in other parts of the world and the Arctic in recent years.

"If it just takes one decade to tip a system like this, that's actually quite scary because if the Antarctic Ice Sheet behaves in future like it did in the past, we must be experiencing the tipping right now", Thomas says.

Further evidence for these tipping points can be found in cores previously analyzed from the region, the researchers report, and the latest study also matches up with earlier models of ice sheet loss from the region.

"Our findings are consistent with a growing body of evidence suggesting the acceleration of Antarctic ice mass loss in recent decades may mark the beginning of a self-sustaining and irreversible period of ice sheet retreat and substantial global sea level rise," says geophysicist Michael Weber, from the University of Bonn in Germany.

The research has been published in Nature Communications.

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(AU Saturday Paper) The Man Behind Scott Morrison’s Climate Panic

 The Saturday Paper - Mike Seccombe

Emails show the man hired to review Scott Morrison’s climate model helped Angus Taylor with last election’s climate scare.

Former head of the Australian Bureau of Agricultural and Resource Economics Brian Fisher. Credit: Supplied

In the lead-up to the last election, just as now, the Morrison government was in political trouble on climate change policy.

Labor had a comprehensive plan to cut greenhouse gas emissions by 45 per cent by 2030. The government had nothing new to propose. But it had a secret weapon and on February 20, 2019, it used it. That day, Rupert Murdoch’s national broadsheet, The Australian, ran a front-page headline that read: “Carbon cut apocalypse: cost of ALP energy plan”.

The story below that headline was replete with big, scary numbers. It said Labor’s policy would “push electricity prices 50 per cent higher, cost workers up to $9000 a year in lower wages and wipe $472 billion from the economy over the next decade”. This was “according to the first independent modelling of the energy policies of both the government and opposition”.

The story quoted the work’s author, Brian Fisher, a former head of the Australian Bureau of Agricultural and Resource Economics (ABARE) and go-to numbers guy for Australian fossil fuel miners.

He voiced his frustration at “how deficient and even outright dishonest the climate debate continues to be” when the “inescapable” reality was that whoever won the election, Australia would suffer an economic hit.

Fisher told The Australian he expected to be “kicked” by both sides of politics for this assessment.

But Fisher was never going to be “kicked” by the Morrison government. When The Australian ran its story, he had already been in communication with the government for many weeks, if not months.

Energy Minister Angus Taylor and his office were liaising with Fisher as he drafted his modelling.

An email trail obtained under freedom of information and given to The Saturday Paper makes that very clear.

Seven weeks before Fisher’s modelling came out – and instantly landed on the front page of The Australian – Taylor sent an email to his staff “team”, saying he had begun working on a piece for publication that compared electricity prices state by state, using draft numbers from Fisher, but “these will need to be updated when we get the final ones”.

In the meantime, he told his staff, they should start working on a comparison of electricity prices “Labor v Coalition” and exploring the “implications” of Labor’s emissions target.

“We need to think about the timing of this with respect to Fisher’s modelling work,” Taylor wrote.

A great deal of the FoI material obtained by The Australia Institute was redacted, so it is unclear how long the minister’s office and the modeller had been exchanging information.

But clearly the government had detailed knowledge of what was coming, and saw it as important that “one of Australia’s most respected advisers on climate change and the economic impact of current and future climate and energy policies” should provide support for its claim that Labor’s proposal would put a “wrecking ball through the economy”.

On the day Fisher’s work became public, a list of talking points and a draft media release were ready to go. And the government hammered the issue of the alleged high cost of Labor’s climate policies relentlessly until the election, aided by repeated interventions in the debate by Fisher.

In fact, the work that informed The Australian’s original story – entitled “Economic consequences of some alternative Australian climate policies” – was only a four-page taste of what was to come.

Months later, when questioned at a seminar at the Australian National University, Fisher said he only put up a summary because the full modelling was out for review, and claimed he did not know how the newspaper found his report within minutes of it being uploaded to his website.

The full version was released on March 11. On May 1, Fisher released a third effort. Abandoning all pretext of political impartiality, it was titled: “Economic consequences of Labor’s climate change action plan.”

Speaking to The Saturday Paper, Fisher defended his work largely by referencing the complexity of his model.

“The model that I use, which is basically my version of the government model, updated and changed many times since I left government in 2006, has got over a million equations in its most detailed form,” he said. “So, you know, these things are difficult to use. And difficult to understand.”

The report he released was roundly condemned by most other economists and energy experts. As The Australia Institute summarised: “Brian Fisher’s latest model of climate costs was off-the-chart.

"It shows cost to GDP [gross domestic product] impacts that were five to ten times larger than every other economy-wide model, including those from Warwick McKibbin, Climateworks, ANU, CSIRO, Victoria University and three major reports from Commonwealth Treasury.”

Kane Thornton, chief executive of the Clean Energy Council, said: “This report, its input assumptions and modelled outcomes, are total garbage. Any politician using this to compare/critique energy policies should be laughed at.”

Almost three years on, the Morrison government is again playing games with climate modelling – and again Fisher is involved.

A couple of weeks ago, on October 25, officials from Taylor’s department confirmed to a senate estimates committee that Fisher had been paid $100,000 for help in its climate modelling. He is listed in the modelling's acknowledgements as one of its peer reviewers.

Fisher tells The Saturday Paper there may be more to his involvement than has been revealed. “There is potentially other work that might be mentioned in the future in the context of the model when it’s released. I do have a contract. And I can’t discuss it with you.”

The day after the estimates revelation, the government’s much-hyped but insubstantial plan for getting Australia to net-zero emissions by 2050 was released.

Morrison said the modelling would show Australia’s gross national income would grow 1.6 per cent under the plan. Nearly 62,000 new regional mining and heavy industry jobs would be created and the average Australian would be nearly $2000 better off.

The modelling, finally released yesterday, is starkly at odds with the Fisher modelling it used at the last election, which said that even the government’s modest 26-28 per cent reductions target would lead to 78,000 fewer jobs, a $9000 cut to real wages and a $19 billion hit to GDP by 2030.

How can this be?

The explanation, says one economist with 20 plus years as a modeller, first at ABARE when it was headed by Fisher and then for several big consulting companies, is that underlying every one of the hundreds of thousands, sometimes millions, of equations that modellers run through their computers are assumptions.

“And the assumptions you put in define the space the model can move in when you run the simulations,” he says.

If you are, for example, modelling future electricity prices: “Before the model starts, you basically have to dial in what are the relative costs of all the technologies – coal, oil, gas, brown coal, nuclear, hydro, other renewables. If you dial in a very expensive renewables price, then … the cost of addressing climate change turns out very expensive.”

And the fact is, 20 years ago, renewables were relatively expensive. Their cost has come down dramatically and is likely to continue to come down dramatically. Thus the inherent problem for modellers: how do you make accurate projections of the future when technology costs are rapidly changing? Do you assume current costs or take a guess at future costs?

Historically, says the expert, even the best-intentioned modellers tended to make conservative assumptions. Still, he says, all around the world, modelling was a well-intentioned exercise, usually done by academics, with the results couched in terms only understandable to, and sometimes honestly contested by, other experts.

Australia, however, has led the world in the politicisation of modelling, he says. And Brian Fisher, as executive director of ABARE, played a big role in that. Under his leadership, says the former ABARE modeller, the organisation developed a model called Megabare.

“ABARE spent a lot of time and money converting theoretical, academic-type models into a tool that spoke the language of government, that convinced the public that these models were producing numbers that made sense in a political context.”

In February 1998, the federal ombudsman issued a scathing critique of the way ABARE operated under Fisher, following a complaint by the Australian Conservation Foundation that it had been denied membership of a group called the Gigabare steering committee, which provided input to its modelling activities.

Membership of the steering committee cost $50,000, which the ACF could not afford, unlike other members including Exxon and the Australian Coal Association.

The ombudsman’s report found that ABARE had “adopted a funding structure and administrative practices for its climate change research projects which failed to adequately protect ABARE as a public sector research agency from allegations of undue influence by vested interests”.

Fisher has a long record of producing work that supports fossil fuel projects and attaches enormous assumed cost to emissions abatement. Under the Howard government, he played an integral role in negotiating Australia’s minimal commitment to emissions reduction at the 1997 Kyoto climate change conference.

His critics are many and harsh, none more so than Guy Pearse, a staffer to former Environment minister Robert Hill, whose insider account of the Howard government’s climate failings in his book, High and Dry, included Fisher among a “Prime Minister’s Eleven” of people most responsible.

“Time and again results that Fisher presented in his [ABARE] reports to government and the scenarios and assumptions behind them lent themselves to misrepresentation by the Howard government,” Pearse wrote. “They routinely overstated the costs of cutting emissions, and they never factored in the financial benefits of action, or the costs of inaction.”

After leaving ABARE, Fisher went into consultancy, sometimes for government, often for the proponents of fossil fuel projects.

Rod Campbell, economist and research director at The Australia Institute, notes Fisher continues to get government work. In January he was appointed to the emissions reduction assurance committee (ERAC) to provide advice on expenditure to the government’s Emissions Reduction Fund.

In estimates, Greens Senator Sarah Hanson-Young called Fisher a climate denier. That’s not accurate; he accepts the science, he says, he just thinks dealing with it will be significantly more expensive than most people think, and probably won’t achieve the outcomes the science says the world must achieve.

“Unfortunately, if people think the world is going to be net zero by 2050, and we’re going to reach a 1.5 degree increase target, then I don’t think that’s happening,” he tells The Saturday Paper. “I’d say we’re on a pathway greater than two, at least.”

How does he square those beliefs with his involvement in a government modelling exercise that suggests – on the limited evidence available so far – that Australia can reach net zero and prosper at the same time?

He doesn’t. He had nothing to do with the assumptions – just the simulations or sims. “I was engaged to try and give them some guidance on how best to run particular sims in the model,” he says. “I haven’t been involved in the modelling directly.”

Fisher still largely stands by the results of his 2019 modelling, notwithstanding a few minor “parameter” changes.

“Basically, I just cannot see how you can transform the Australian economy from one that’s been … heavily based on fossil fuels for living memory, to one that effectively doesn’t use any of them at all. Or if it is using them, has to sequester the emissions.”

So why is he not producing modelling to that effect? Like everyone else, he says, he’s waiting to see the details of the government’s plan.

“I might do the same thing again, before the next election,” Fisher says. “Just depends on how I’m feeling on the day.”

Possibly. But it remains highly unlikely, even with the Morrison government’s new commitments to change, that we will see a Murdoch front page to match the shifting reality: “Carbon cut apocalypse: cost of Morrison energy plan”.

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(AU Saturday Paper) Morrison Leads A Can’t-Do Government In A Won’t-Do Country

The Saturday PaperJohn Hewson


Author
Dr John Hewson AM is an honorary professor at the Crawford School of Public Policy, Australian National University, and is a former leader of the Liberal party.
Is Scott Morrison’s latest slogan – “can-do capitalism” – simply an overarching abrogation of his responsibility to provide good government in our national interest?

Essentially he wants to leave it to market forces, to the private sector, to meet the challenges his government faces, thereby hoping to wedge Anthony Albanese and the opposition by somewhat hypocritically tagging them as “Big government”, “Socialists”, “Interventionists”, “Regulators”, “Mandators” and the like.

There should be little doubt that Morrison can pivot. Expect more slogans to come. He clearly demonstrated this flexibility in response to the pandemic. He and Treasurer Josh Frydenberg had barely uttered “Back in black” than they were out there spending and regulating, ostensibly to cushion the economic and social impacts of the medical response to Covid-19, built on social distancing and significant restrictions on various sectors and freedoms.

The Morrison government soon became one of the highest-spending and most intrusive governments in our history. Yet this hasn’t stopped them from attempting to so tag the opposition, still referring back to the Rudd government’s response to the global financial crisis.

It has always been an identifying element of so-called Liberal–National ideology to advocate for reliance on market forces and private initiatives when and wherever possible, claiming to believe in small government and low levels of regulation.

Yet this has always implied that government has a clear responsibility to set the legislative, regulatory and broader policy framework within which market forces were to be unleashed to work to their full potential in terms of enhancing efficiency.

Moreover, it was recognised that there were occasions on which it could be said that markets had failed to deliver socially and politically acceptable outcomes, necessitating the government to step in and adjust these outcomes to be more acceptable.

A particular focus here is on what economists call externalities, of which there are “good” and “bad” examples. The role of government in this model was to collect and accentuate the good and to minimise the bad.
Can you ever imagine world leaders wanting to be lectured along these lines? Can’t you just see Joe Biden, Boris Johnson, Emmanuel Macron and Angela Merkel holding their breath, leaning in, to hear the wisdom of ‘that fella Down Under’ as he struts and smirks his way through his description of the Australian character?
Can you ever imagine world leaders wanting to be lectured along these lines? Can’t you just see Joe Biden, Boris Johnson, Emmanuel Macron and Angela Merkel holding their breath, leaning in, to hear the wisdom of ‘that fella Down Under’ as he struts and smirks his way through his description of the Australian character?

Clearly Morrison doesn’t get the significance of the framework – or simply doesn’t want to get it. The market and the private sector want certainty to invest. They need to minimise the risks of a sudden change in policy and more than that, they need policy detail to make decisions.

Policy development and implementation have been the defining weaknesses of the Morrison government. In this respect it is worth recalling Morrison’s initial briefing to the public service, condescendingly instructing them that he saw their role as being confined to “service delivery” – that he and his ministers were responsible for policy development. This was a pointless and meaningless statement  then as it is now.

Morrison won’t be able to push his desired contrast between his market-based approach and the bigger government response that he likes to try to tag the ALP with, because to work well, markets need more than a little government involvement.
Globally, “can-do capitalism” can be blamed for undermining democracy and can be seen as a major cause of climate change.
Globally, “can-do capitalism” can be blamed for undermining democracy and can be seen as a major cause of climate change.

Unfortunately, businesses have often “gamed” the capitalist system, skewing benefits to themselves and shareholders at the expense of other stakeholders. Governments have often corrupted the capitalist system by governing in the interests of a few of their mates and donors – what is called “crony capitalism”.

Clearly it was unregulated, unconstrained capitalism that governments encouraged to drive the Industrial Revolution, powered by fossil fuels.

This ignored the bad externality of carbon emissions and other social and environmental impacts, which have produced the climate crisis that now challenges governments globally with the threat of catastrophic consequences for the planet and our lives on it, in the event of failure.

With this background, it is instructive to take a look at what Morrison actually said about “can-do capitalism”.

In a question and answer session following his recent speech to the Victorian Chamber of Commerce and Industry, Morrison claimed, “We are primed and ready to go in this country. We’re set up, but we’ve got to make sure that governments in Australia remember that we are a can-do capitalist country, not a don’t-do government’s country.”

It seems his motivation in making this statement was more about a desire to test an election message about the comparison between the LNP and the ALP, hoping to wedge the latter, rather than to document the detail of his can-do capitalist approach.

Indeed, Morrison went on to claim that at “events” he attends overseas people will come up to him and say Australians are “hopelessly” optimistic.

“And I go, ‘Yes,’ ” he said. “Because we see the world differently and we look at things like climate change and go, ‘We can deal with that.’ We’re not going to be beaten by it. We’re not going to get depressed about it. We’re going to fix it, because that’s what you do in Australia. You don’t whinge and whine about it. You just get on with it and you get through the challenge.”

How realistic does this sound? Can you ever imagine world leaders wanting to be lectured along these lines? Can’t you just see Joe Biden, Boris Johnson, Emmanuel Macron and Angela Merkel holding their breath, leaning in, to hear the wisdom of  “that fella Down Under” as he struts and smirks his way through his description of the Australian character?

Morrison ended that meeting, obviously not paying much attention to his own words, when he said, “The pandemic has taught us not to take our economy and our freedoms for granted. And, so, the choices we make about that and the importance of the leadership that is needed to protect our country, to ensure that our economy is secured and our recovery is secured, I think is the big reminder for me.”

Surprisingly, he failed to then allude back to his earlier remarks, where he could have said, “I hereby abrogate all responsibility for that leadership and am leaving our response to the market, to can-do capitalism.”

It is difficult for me to accept that Morrison is still not taking the climate crisis seriously. Although his government signed the agreement reached at the United Nations Climate Change Conference (COP26) in Glasgow, which included a pledge to regularly update emissions reduction commitments, Morrison has already backed off on this promise.

His actions will only compound our poor global standing as the leading laggard on climate action, having had the hide to parade around COP26 with his shallow commitment to net zero by 2050, developed in high farce with the Nationals, and with no clear policies or pathway to get there, while deliberately misleading others as to our history of emissions reductions.

It should be recognised that the declared targets of the Glasgow participants are not nearly enough to keep the world to a maximum warming of 1.5 degrees Celsius over pre-industrial times. As things now stand, even if existing commitments are met, the world will still warm by 2.7 degrees on some models. It is still all to be done to save the planet.
Climate change is now an existential risk
Climate change is now an existential risk. Australia simply cannot downplay its essential role in this as one of the world’s largest miners and exporters of fossil fuels. So many countries, particularly the island countries that are disappearing with sea level rise, are looking for a lead from Australia on this.

It’s hard to imagine that this could ever occur when you see the Nationals celebrating the final edits to the Glasgow communiqué, which soften the wording on coal.

Morrison simply should not be allowed to fob off this challenge with some vague reliance on so-called can-do capitalism without details of the essential regulatory and policy framework to provide the confidence that it is achievable.

Otherwise, Morrison leads a can’t-do government in a won’t-do country.

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