Tag: IPCC

IPCC’s Pachauri fights back

“We have a very apt saying in Hindi, which essentially translates as: ‘When a jackal is threatened, he starts moving toward the city.’ In other words, he becomes more visible. I think some of these guys are speaking out volubly because they read the writing on the wall.”

That was IPCC chairman Rajendra Pachauri in an interview nearly a year ago, speaking of the increase in the decibel level of contrarians.  Even so he was probably not prepared for the strength of the attack they mounted as the year proceeded.

But he is more than ready to defend the IPCC against the attacks it has been receiving.  The Guardian has just published a forthright article written by him.

“To dismiss the implications of climate change based on an error about the rate at which Himalayan glaciers are melting is an act of astonishing intellectual legerdemain. Yet this is what some doubters of climate change are claiming. But the reality is that our understanding of climate change is based on a vast and remarkably sound body of science – and is something we distort and trivialise at our peril.”

He reminds readers of the scale of the IPCC’s Fourth Assessment Report (AR4). The IPCC mobilised 450 scientists from all over the world to write it. An additional 800 contributing authors gave specialised inputs and about 2,500 expert reviewers provided 90,000 comments.

“In this mammoth task, which yielded a finished product of nearly 3,000 pages, there was a regrettable error indicating the Himalayan glaciers were likely to melt by the year 2035. This mistake has been acknowledged by the IPCC.”

He reaffirms that the major thrust of the report’s findings provides overwhelming evidence that warming of the climate system is unequivocal, and draws attention to our responsibility to ensure that future generations do not suffer the consequences.

“We cannot ignore the fact that the impacts of climate change, which are based on actual observations, are leading to ‘increases in global average air and ocean temperatures, widespread melting of snow and ice and rising global sea levels’…

“Altered frequencies and intensities of extreme weather, together with sea level rise, are expected to have mostly adverse effects on natural and human systems. Even more serious is the finding that human-induced warming could lead to some impacts that are abrupt or irreversible. For instance, partial loss of ice sheets on polar land could imply metres of sea level rise, major changes in coastlines and inundation of low-lying areas, with the greatest effects in river deltas and low-lying islands.”

He acknowledges that the choices for stakeholders and the economy are difficult, but they should not ignore the IPCC’s findings, which are the work of thousands of scientists from across the world who “have worked diligently and in an objective and transparent manner to provide scientific evidence for action to meet the growing challenge of climate change.” Ignoring those findings “would lead to impacts that impose larger costs than those required today to stabilise the Earth’s climate.”

Pachauri moves on and presumably refers to Senator James Inhofe when he speaks of

“… the effort of some in positions of power and responsibility to indict dedicated scientists as “climate criminals”. I sincerely hope the world is not witnessing a new form of persecution of those who defy conventional ignorance and pay a terrible price for their scientifically valid beliefs.”

Inhofe is a long-standing climate sceptic, who last month called for a criminal investigation of climate scientists. He published a minority report from the Senate committee on environment and public works that claimed climate scientists involved with the controversy over emails from the University of East Anglia “violated fundamental ethical principles governing taxpayer-funded research and, in some cases, may have violated federal laws”. He named the scientists, who included Phil Jones and Keith Briffa from the University of Esast Anglia and Peter Stott of the UK Met Office.  Michael Mann was, of course, among the US scientists named.

Mann, in response, as reported in the Guardian, has quoted President Harry Truman way back in 1948 in the dark age of McCarthyism:   ’Continuous research by our best scientists … may be made impossible by the creation of an atmosphere in which no man feels safe against the public airing of unfounded rumours, gossip, and vilification.’

Mann added:

“I fear that is precisely the sort of atmosphere that is being created, and sure, it impacts research. The more time scientists have to spend fending off these sorts of attacks and dealing with this sort of nonsense, the less time is available to them to actually do science, and to push the forefront of our knowledge forward. Perhaps that is the intent?”

But to return to Pachauri.  He has not had an easy time himself in the wake of the acknowledgement of the error in the report. I have no interest in the personal accusations made against him, but it’s worth setting the record straight about his “voodoo science” comment.  It was not made in relation to the discovery of the error in the IPCC report, but in relation to a discussion paper authored last year by a retired official of the Geological Survey of India which said it would be premature to state the glaciers were retreating as a result of periodic climate variation until many centuries of observation were available. It concluded by raising the possibility that the retreat of Himalayan glaciers today was a delayed reaction to the Medieval Warm Period rather than a response to current warming.

However almost anything that Pachauri has ever said or done will become grist to the denialist mill. It is good to see him seemingly not dismayed and steadily persisting in conveying the message that there is every reason to trust the IPCC reports and it would be a dereliction of responsibility not to heed their warning.

The dangerous sea

This column was published in the Waikato Times on March 16.

The media has paid disproportionate attention to an error in the monumental 2007 report of the Intergovernmental Panel on Climate Change.  In a chapter surveying the possible future impacts of climate change on the Asian region the report included a prediction that the Himalayan glaciers could melt by 2035. The glaciers will certainly melt if we continue on our current course, but not as soon as that. This was a mistake which the IPCC has acknowledged and regretted. Not too bad in a volume of 3000 pages, but a mistake that shouldn’t have occurred and wouldn’t have if procedures had been properly applied.

Since then there have been regular media “revelations” claiming other errors as well. For all the fanfare with which they have been produced these have so far turned out to hinge on little more than minor technicalities. They cause much excitement in the denialist community, but they amount to nothing of consequence.

Overstatement is what the IPCC is being accused of.  But the reality is that its report is generally conservative and cautious and in one very important matter likely to have understated a real danger ahead. That is sea level rise.

 

The IPCC does predict sea level rise in the century ahead, somewhere between 18 and 58 centimetres, depending on how high the level of greenhouse gases is allowed to climb.  It sounds reassuringly manageable.  But this predicted rise comes only from a combination of thermal expansion of the oceans because of warmer temperatures, and the continued slow melting of glacier ice.  It assumes there will be no increase in the rate at which melting has occurred in the great ice sheets of Greenland and the Antarctic.

Time has passed, and it is now widely accepted in scientific circles that there is reason to expect a significant acceleration in the rate at which the Greenland and Antarctica ice sheets lose mass to the sea.  The dynamics of ice movement are beginning to be better understood, and they are not reassuring.  Those massive ice sheets are seemingly not as impervious as once thought and their melting not necessarily a slow predictable linear process. Disintegration may be a more accurate word than melting.

If the IPCC predictions are too cautious, what level of rise is now being considered likely in this century?  One metre say some.  Others say that’s still not allowing sufficiently for the acceleration likely to build, and recommend planning for a two metre rise.  James Hansen of NASA is prepared to consider five metres as a real possibility, though he doesn’t offer that as a prediction..

Of all the predicted impacts of climate change, sea level rise is the one that I find most unnerving.  Its effects on human populations are distressing to contemplate.  The deltaic nations such as Egypt, Vietnam, Bangladesh and Myanmar will be badly hit. Some atoll nations will disappear. Countries with large low-lying coastal plains, such as the US, China and Brazil will be faced with tremendous disruption. Some great cities will be severely threatened, including Miami, New York, Tokyo and Amsterdam. It won’t be all that straightforward in New Zealand for that matter – a one metre sea level rise would put Tamaki Drive under water for example.

And it’s not the kind of damage that can be undone.  How could we get water to return to the ice sheets?  That’s why it is so important that we stop it happening in the first place. Any suggestion that a minor error in the IPCC report has somehow put the urgency of that task into question is out of touch with reality.

********************

It is likely that this is the last in the series of columns I have been invited to write for the Waikato Times over the past couple of years.  The columns are directed to the general public, not Hot Topic readers, but they may have been useful here in indicating what can be written in public forums. It’s well worth anyone’s effort to get the message across in newspapers.  I often wish there were more scientists writing in that medium, though I know it can be difficult to secure a space for opinion pieces. There are always the letters to the editor, which journalists tell me are popular with readers. The company there can sometimes be embarrassing, but if you’re willing to take that risk a clear statement on climate change will receive wide attention. It has been quite depressing to see in our local paper far more letters (often muddled) from contrarians than from those who take climate change seriously.

Fight back, scientists urged

“The response to the [email] vandals is to bury them with the data and experience of a century of scholarly research and analysis. The information that is important in making the decisions as to how to manage our world is unequivocal and must be advanced, not as questions at the edge of scientific knowledge where scientist like to dwell, but as the facts that they are, facts as immutable as the law of gravity. The climatic disruption is not a theory open to a belief system any more than the solar system is a theory, or gravity, or the oceanic tides, or evolution.”

Strong words from a scientist, but I felt an involuntary cheer as I read them on Joe Romm’s Climate Progress. They are from Dr. George Woodwell in an email to Romm. Woodwell is the founder, Director Emeritus, and Senior Scientist at the Woods Hole Research Centre.

 

Romm had invited comment from him in response to a Washington Times report of an email exchange between several scientists from the National Academy of Sciences discussing the need to fight back against the attempts by sceptics to portray the UEA emails and the IPCC error as ground for doubting the science of climate change.

“This is not the time to wring our hands over the challenges to hyper-scientific objectivity, the purity of scholars, and to tie ourselves in knots with apologies for alleged errors of trifling import.”

Here is the reality, which Woodwell expresses with a freshness of perception:

“The fact is that we, humans, have changed the composition of the atmosphere with respect to heat-trapping gases enough to start the progression of global climate, not into a new steady state, but into an open-ended warming that is pulling the environment out from under this civilization. If one wonders where that process leads, one need not look far around the world to find dysfunctional landscapes. Have a quick look at New Orleans, the Gulf Coast, or Haiti before the earthquake.  All have fallen far below any point where internal resources can be used to restore a nation with a functional political system, a vital economy, and a functional environment.”

Scientists need to come out fighting:

“The scientific community has done brilliantly with the IPCC, by nature a conservative apparatus. It is time now, thirty years after the problem was recognized as threatening this civilization, for the scientific community to come forth with clear instructions, relentlessly repeated and amplified, as to how to restore a functional habitat for humanity. It can be done, but the scientific community has a big responsibility not now widely recognized or accepted.”

Woodwell has had plenty of time to consider these matters.  Over twenty years ago, in 1988, he testified to a Senate committee under the title Rapid Global Warming: Worse With Neglect. The matters he raised then have continued to be prominent in the science in the intervening years, and the early warning he sounded has stood the test of time.  (The full text of his testimony is included on the Climate Progress post.)

James Hansen also gave his famous Congressional testimony that year, and continues today to bring his scientific concern about climate change to the attention of political leaders.  He is a splendid exemplar of Woodwell’s urging that the scientific community “come forth with clear instructions, relentlessly repeated and amplified”.

There is much advice circulating these days about how to get the message across successfully to the public.  Some of it suggests that the scientists should retreat to their domain of research and leave it to others to work on public opinion. That won’t work.  If the scientists are not constantly and publicly reiterating the seriousness of their findings it’s likely that the issue will continue to be treated with far less urgency than it requires.  It’s not always easy for scientists to take public roles, but they need to do it  more than ever as the campaigns of disinformation reach the peaks of activity we have seen in recent months. Bravo Woodwell and others like him.

Al Gore going strong

That travesty of a news outlet, Fox News, carried an article last Thursday (in its science and technology section, believe it or not) which opened as follows:

“Al Gore won a Nobel Prize and an Oscar for his film, An Inconvenient Truth. But in the last three months, as global warming has gone from a scientific near-certitude to the subject of satire, Gore – the public face of global warming – has been mum on the topic.”

The writer elaborates in the rest of the article, with such choice pickings as this quote from the Investors’ Business Daily:

“The godfather of climate hysteria is in hiding as another of his wild claims unravels – this one about global warming causing seas to swallow us up. We’ve not seen or heard much of the former vice president, Oscar winner and Nobel Prize recipient recently as the case for disastrous man-made climate change collapses.”

No doubt this kind of taunting is rife in the fevered madness of some of the right-wing media in America. It’s not a world I willingly dip into.

But they’re as wrong about Gore’s reticence as they are about the science he communicates.  He contributed a lengthy opinion piece to last weekend’s New York Times.  In it he recognises the recent attacks on the science of global warming, even says it would be an enormous relief they were true. But they’re not.

Continue reading “Al Gore going strong”

The Listener joins the attack

“…serious and growing questions over the standards and credibility of the international body whose job it is to determine the scientific truths about climate change.” 

The Listener is not going to be left out.  Ruth Laugesen writes in the current issue that “probes by a variety of international media have uncovered a smattering of poorly based and even shonky assertions” in the IPCC reports.  By the time she comes to list them later in her article they have become “potential inaccuracies”. The list is familiar enough.  First is the Himalayan glacier melt rate, which has been acknowledged by the IPCC as a regrettable error.  Of the other four, two track back to Jonathan Leake at the Sunday Times – dubbed Amazongate and Africagate – and both have been shown up as lacking any substance by Tim Lambert here and here. Another refers to the mistaken statement that 55% of the Netherlands is below sea level when the correct figure is 26%, yet Laugesen acknowledges that this relied on a figure supplied by the Netherlands Environmental Assessment Agency. The remaining item concerns the reliability of data from weather stations in East China used in a research paper by Phil Jones and others published in Nature in 1990. Jones has reasonably responded to the accusation of fraud here.

 

Against the massive and impressive IPCC reports these are all matters of negligible substance, as anyone who has cast an eye over the reports would immediately recognise.  Only one of them reveals a clear failure to observe the processes and standards expected of the IPCC authors.  It is absurd to suggest that they add up to serious and growing questions.  All they add up to is a demonstration of how savagely determined climate change deniers are to cast doubts on climate science by whatever means they can find.  Is it too much to ask that a staff writer for the Listener treat her “international media” with more caution?  Journalists around the world seem to be engaged in an operation where you simply pass on something you have read about climate science in another publication without feeling the need to check on its initial reliability.  The more this happpens the more the story becomes entrenched. And the longer the public is left thinking there may be some deep uncertainty about human-caused climate change. The abdication of intellectual responsibility is alarming.

And it’s not only journalists who are letting the public down. Depressingly, and I wish I could add surprisingly, Climate Change Minister Nick Smith when questioned by Laugesen has chosen not to deny the notion that the IPCC report is untrustworthy.  “It does raise questions – if those parts of the report have mistakes in them, what about the rest of the report?…The reality is that governments respond to the mood of the public. And the fact that there are errors in the IPCC report is of concern.”

He says that the errors will be one reason for the government being “a bit more cautious” on climate change policy.  How much more cautious can the government get without giving up on the issue altogether?  If Smith is taking his lead from the mood of the public he should not be occupying the post of Climate Change Minister.  He has access to expert scientific advice.  He should be telling the public how serious the situation is, not letting their mood be determined by superficial journalism.

He even has the nerve to advise the 16 NZ scientists involved in the IPCC process that “it is better to pursue quality than quantity.”

Thankfully Laugesen includes comments from NIWA’s chief climate scientist, David Wratt, NZ’s representative on the 31-member IPCC governing bureau.  He introduces a note of sanity into the article. One hopes the Listener readership is sophisticated enough to see with whom the truth lies, but journalists certainly aren’t making it easy.