This was immediately followed by a series of equally forthright talking heads:
"We can't say that CO2 will drive climate; it certainly never did in the past."
“We imagine that we live in an age of reason. And the global warming
alarm is dressed up as science. But it’s not science; it’s propaganda.”
And:
“We’re just being told lies; that’s what it comes down to.”
The commentary added to the sense of outrage: “You are being told lies.”
This was indeed superficially impressive - when several experts make
bold statements on the same theme we naturally assume they must be onto
something - but alarm bells should already have been ringing. This,
after all, was ostensibly a film about science - about evidence,
arguments, research and debate. Why, then, the language of polemic and
smear?
The remarkable answer is provided by the film’s writer and director, Martin Durkin:
"I think it [the film] will go down in history as the first chapter in
a new era of the relationship between scientists and society.
Legitimate scientists - people with qualifications - are the bad guys.
It is a big story that is going to cause controversy."
“It's very rare that a film changes history, but I think this is a
turning point and in five years the idea that the greenhouse effect is
the main reason behind global warming will be seen as total bollocks.”
('“
Global Warming Is Lies” Claims Documentary,’ Life Style Extra, March
4, 2007)
Compare and contrast this with the aim as
described in a letter sent by
the makers of the film, Wag TV, to Professor Carl Wunsch, a leading
expert on ocean circulation and climate who subsequently appeared in
the film:
“The aim of the film is to examine critically the notion that recent
global warming is primarily caused by industrial emissions of CO2. It
explores the scientific evidence which jars with this hypothesis and
explores alternative theories such as solar induced climate change.
Given the seemingly inconclusive nature of the evidence, it examines
the background to the apparent consensus on this issue, and highlights
the dangers involved, especially to developing nations, of policies
aimed at limiting industrial growth.”
Wunsch comments:
"I am angry because they completely misrepresented me. My views were
distorted by the context in which they placed them. I was misled as to
what it was going to be about. I was told about six months ago that
this was to be a programme about how complicated it is to understand
what is going on. If they had told me even the title of the programme,
I would have absolutely refused to be on it. I am the one who has been
swindled." (
Geoffrey Lean, ‘Climate change: An inconvenient truth...
for C4,’ The Independent, March 11, 2007; )
We will hear more from Wunsch in what follows.
Deeply Deceptive
The film presented viewers with an apparently devastating refutation of
the "theory of global warming". And these were not picky, esoteric
criticisms. Durkin insisted that the world’s climate scientists are
guilty of the most fundamental error imaginable: increased atmospheric
carbon dioxide (CO2) is not the cause of higher temperature, as the
experts claim. Quite the reverse: increasing atmospheric CO2 is itself
the +result+ of rising temperature.
As evidence for this contention, Durkin argued that global surface
temperature dropped dramatically between 1945-1975, at a time when CO2
emissions were rapidly rising as a result of the postwar economic boom.
According to Durkin, if CO2 emissions were responsible for increasing
temperature, then temperature should not have fallen between 1945-1975.
Clearly, then, some factor other than CO2 emissions must have caused
the subsequent global temperature rise.
But Real Climate, an internet site run by climate scientists, such as
NASA’s Dr Gavin Schmidt and Dr William Connelley of the British
Antarctic Survey, describes Durkin’s discussion of the 1945-75 period
as “deeply deceptive”. (
Real Climate, March 9, 2007)
In this section of the film, Durkin focused heavily on a graph
depicting temperature changes. The graph, Real Climate comments, “looks
rather odd and may have been carefully selected”. It appears to show a
dramatic cooling between the 1940s and 1970s. But try flipping between
the film’s version of the global temperature record:
http://i157.photobucket.com/albums/t63/izzy_bizzy_photo/capture.jpg
and the temperature plot that normally appears in the scientific literature:
http://en.wikipedia.org/wiki/Image:Instrumental_Temperature_Record.png
The supposed cooling looks rather less evident in this second graph.
Without knowing more details of how Durkin may have manipulated the
data plotted in his graph, it is difficult to comment on the
presentation. What we can say is that Durkin’s "four decades of
cooling", implying a relentless temperature drop over 40 years, is not
an accurate description of the trend over this period. There was some
cooling for +part+ of this time but also some plateauing, with
fluctuations up and down.
But why did the temperature not simply rise in line with the post-war increase in greenhouse gas emissions?
In fact, as is well-known, the absence of a global rise in temperature
between 1945-75 is explained by the release of large amounts of
industrial pollutants, called sulphate aerosols, into the atmosphere.
These particles have a braking effect on global warming, known as
“global dimming”. By shielding some of the incoming solar energy,
sulphate aerosols mask the underlying warming effect generated by
rising levels of CO2. By the 1980s, however, stronger warming had
exceeded this masking effect and global temperature has since continued
to rise. As Real Climate notes, by failing to explain the science
behind this phenomenon the programme makers were guilty of “lying to us
by omission.”
The Ice Cores
The film repeatedly gave the impression that mainstream science argues
that CO2 is the +sole+ driver of rising temperatures in the Earth's
climate system. But this is not the case. Climate scientists are well
aware that solar activity plays a role, though a minor one at present,
as do long-term periodic changes in the Earth's orbit, known as
Milankovitch cycles.
The point is that there is a vast body of evidence that very strongly
supports the hypothesis that greenhouse gas emissions, of which CO2 is
the most important, are +primarily+ responsible for +recent+ global
warming. The 4th and most recent scientific assessment of the
Intergovernmental Panel on Climate Change (IPCC) concludes:
"Most of the observed increase in globally averaged temperatures since
the mid-20th century is very likely [.i.e. probability greater than
90%] due to the observed increase in anthropogenic greenhouse gas
concentrations." ('Climate Change 2007: The Physical Science Basis,'
Summary for Policymakers, IPCC, February 2007, page 10)
We then come to one of the film's most misleading arguments. Antarctic
ice cores show that rises in levels of CO2 have lagged 800 years behind
temperature rises at specific times in the geological past. This,
argued Durkin, +proves+ that CO2 cannot be responsible for global
warming - instead global warming is responsible for increasing levels
of CO2. But this was a huge howler.
What Durkin's film failed to explain was that the 800-year lag happened
at the end of ice ages which occur about
every 100,000 years.
Scientists believe that the end of an ice age is likely triggered when
the amount of heat reaching the Earth rises as a result of a periodic
change in the Earth's orbit around the sun. Jeff Severinghaus,
Professor of Geosciences at Scripps Institution of Oceanography,
explains why the rise in CO2 initially lags behind the temperature rise:
"The reason has to do with the fact that the warmings take about 5000
years to be complete. The lag is only 800 years. All that the lag shows
is that CO2 did not cause the first 800 years of warming, out of the
5000 year trend." (
Real Climate, 'What does the lag of CO2 behind
temperature in ice cores tell us about global warming?’, December 3,
2005;)
The best current explanation for the lag of 800 years is that this is
how long it takes for CO2, absorbed by the ocean in an earlier warm
period, to be "flushed out" at the end of an ice age. Once that CO2 has
been released into the atmosphere its heat-trapping properties as a
greenhouse gas lead to even stronger warming: an example of positive
feedback. (See Caillon et al., 'Timing of Atmospheric CO2 and Antarctic
Temperature Changes Across Termination III,' Science, 14 March 2003:
Vol. 299. no. 5613, pp. 1728 - 1731)
Professor Severinghaus summarises:
"In other words, CO2 does not initiate the warmings, but acts as an amplifier once they are underway."
Durkin’s analysis, then, was way off the mark.
The film’s claim that solar activity might account for recent warming
is also without credibility. In September 2006, the Times reported the
latest findings from researchers writing in the top journal, Nature:
“Scientists have examined various proxies of solar energy output over
the past 1,000 years and have found no evidence that they are
correlated with today's rising temperatures. Satellite observations
over the past 30 years have also turned up nothing. ‘The solar
contribution to warming... is negligible,’ the researchers wrote in the
journal Nature.” (Anjana Ahuja, ‘It's hot, but don't blame the Sun,’
The Times, September 25, 2006)
The film's other scientific claims can be similarly dismissed. Carl
Wunsch - who, as discussed, appeared in the film - comments:
“What we now have is an out-and-out propaganda piece, in which there is
not even a gesture toward balance or explanation of why many of the
extended inferences drawn in the film are not widely accepted by the
scientific community. There are so many examples, it's hard to know
where to begin, so I will cite only one: a speaker asserts, as is true,
that carbon dioxide is only a small fraction of the atmospheric mass.
The viewer is left to infer that means it couldn't really matter. But
even a beginning meteorology student could tell you that the relative
masses of gases are irrelevant to their effects on radiative balance.
A
director not intending to produce pure propaganda would have tried to
eliminate that piece of disinformation.”
For further help in understanding the weakness of the film’s claims, see the following resources:
Real Climate, 'Swindled',
Campaign Against Climate Change, including a rebuttal to the film by
Sir John Houghton, who chairs the Scientific
Assessment Working Group
of the Intergovernmental Panel on Climate Change:
Royal Society: Facts and fictions about climate change:
“I Was Duped” - Déjà Vu?
Many readers will be aware that Durkin has previous ‘form’. In 1997,
Channel 4 broadcast his three-part series, Against Nature, which
suggested present-day environmentalists were the true heirs of the
Nazis. (
See George Monbiot, ‘The Revolution Has Been Televised,’ The
Guardian, December 18, 1997; )
Several interviewees who appeared in the film felt they had been misled
about the programme-maker’s agenda. Responding to complaints, the
Independent Television Commission (ITC) found that the editing of
interviews with four contributors had "distorted or misrepresented
their known views". (
Geoffrey Lean, ‘Climate change: An inconvenient
truth... for C4,’ The Independent, March 11, 2007)
In addition, the ITC found: "The interviewees had also been misled as
to the content and purpose of the programmes when they agreed to take
part." (Paul McCann, ‘Channel 4 told to apologise to Greens,’ The
Independent, April 2, 1998)
Ten years on, it appears that history may have repeated itself. In his
letter of complaint to the film-makers cited above, Carl Wunsch writes:
“I have some experience in dealing with TV and print reporters and do
understand something of the ways in which one can be misquoted, quoted
out of context, or otherwise misinterpreted. Some of that is inevitable
in the press of time or space or in discussions of complicated issues.
Never before, however, have I had an experience like this one. My
appearance in the ‘Global Warming Swindle’ is deeply embarrassing, and
my professional reputation has been damaged. I was duped---an
uncomfortable position in which to be.
“At a minimum, I ask that the film should never be seen again publicly
with my participation included. Channel 4 surely owes an apology to its
viewers, and perhaps WAGTV owes something to Channel 4.
I will be
taking advice as to whether I should proceed to make some more formal
protest.”
Eight of the scientists in the film - John Christy, Paul Reiter,
Richard Lindzen, Paul Driessen, Roy Spencer, Patrick Michaels, Fred
Singer and Tim Ball - are linked to American neo-conservative and
right-wing think-tanks, many of which have received tens of millions of
dollars from Exxon.
Greenpeace provides a fascinating online ’map’ detailing how Exxon funds these climate sceptics. Go to:
http://www.exxonsecrets.org/index.php?mapid=831 (click ‘Launch’ then click ‘skip intro’)
In his book, Green Backlash, environmental journalist Andrew Rowell
noted that Fred Singer has also attacked scientific and environmental
stances on other green issues such as ozone, acid rain, automobile
emissions and even whaling. Singer has worked for companies such as
Exxon, Shell, Arco, Unocal and Sun.
According to the Environmental Research Foundation, a non-governmental organisation:
“For years, Singer was a professor at the University of Virginia where
he was funded by energy companies to pump out glossy pamphlets
pooh-poohing climate change.” (Quoted, Sharon Beder, Global Spin, Green
Books, 1997, p.94)
Rowell wrote that a quarter of Patrick Michaels’ research funding was
reportedly received from companies such as Edison Electric Institute,
the largest utility trade association in America. Michaels’ magazine,
World Climate Review, was funded by the Western Fuel Association and a
video produced by him was funded by coal companies and distributed by
the Denver Coal Club. (Rowell, Green Backlash, Routledge, 1996, p.143)
Both Singer and Michaels represented the fossil fuel lobby’s Global
Climate Coalition and the Competitive Enterprise Institute, a leader in
global warming scepticism.
Journalist Ross Gelbspan noted that in May 1995, Richard Lindzen and
Patrick Michaels were hired as expert witnesses to testify on behalf of
Western Fuels Association, a $400 million consortium of coal suppliers
and coal-fired utilities. Gelbspan said of Lindzen:
“I don't know very many supporters of Mr Lindzen who are not in the pay
of the fossil fuel lobby. Dr Lindzen himself, his research is publicly
funded, but Dr Lindzen makes, as he told me, $2,500 a day consulting
with fossil fuel interests, and that includes his consulting with OPEC,
his consulting with the Australian coal industry, his consulting with
the US coal industry and so forth. That's not to say Dr Lindzen doesn't
believe what he says, but it is to say that he stands in very sharp
distinction to really just about virtually all of the climate
scientists around the world.” (T
ony Jones, ‘Journalist puts global
warming sceptics under the spotlight,’ Australian Broadcasting
Corporation, March 7, 2005;)
Journalist George Monbiot wrote of Philip Stott:
“Professor Stott is a retired biogeographer. Like almost all the
prominent sceptics he has never published a peer-reviewed paper on
climate change. But he has made himself available to dismiss
climatologists' peer-reviewed work as the ‘lies’ of
ecofundamentalists.” (
Monbiot, ‘Beware the fossil fools,’ The Guardian,
April 27, 2004;)
Paul Driessen is a fellow at two right-wing think tanks in the US,
which are part of the Wise Use movement. One of the think tanks is
headed by Ron Arnold, who has spent the last twenty years attacking the
environmental movement. His fellow director is a fundraiser for
America's gun lobby. The list goes on...
By contrast, Greenpeace spokeswoman Mhairi Dunlop said her organisation
had been interviewed by Durkin but none of the material had been
included in the film:
"They interviewed us but I guess what we said didn't fit in with the [story] they were peddling." (McCandless, op. cit)
Following the film’s broadcast, Professor Martin Rees, president of the
Royal Society - the government-sponsored academy of sciences for the
United Kingdom - has said that many factors contribute to global
warming but it is clear that emissions of "greenhouse gases,"
particularly CO2, are to blame for most of the current temperature
rise. Rees added:
"Those who promote fringe scientific views but ignore the weight of
evidence are playing a dangerous game. They run the risk of diverting
attention from what we can do to ensure the world's population has the
best possible future." (Ibid)
On March 11 the Observer published a letter from a group of climate scientists responding to Durkin’s film:
“This programme misrepresented the state of scientific knowledge on
global warming, claiming climate scientists are presenting lies. This
is an outrageous statement...
“We defend the right of people to be sceptical, but for C4 to imply
that the thousands of scientists and published peer-reviewed papers,
summarised in the recent international science assessment, are
misguided or lying lacks scientific credibility and simply beggars
belief.” (
Alan Thorpe, Natural Environment Research Council, Brian
Hoskins, University of Reading, Jo Haigh, Imperial College London,
Myles Allen, University of Oxford, Peter Cox, University of Exeter,
Colin Prentice, QUEST Programme, letter to the Observer, Sunday March
11, 2007;)
Viewed from one perspective, Channel 4 has done a huge public
disservice in spreading absurd and mendacious arguments guaranteed to
generate confusion. This at a time when a fragile momentum is building
on the need to take urgent action on the very real threat of
catastrophic climate change.
But from another perspective it may well be that this film does for
climate scepticism what Tony Blair’s “dodgy dossiers” did for the
pro-war movement ahead of the invasion of Iraq. Wildly distorted
propaganda often does have a powerful initial impact. But stretched
beyond a certain point of unreality, it also has a tendency to turn on,
and bite, the propagandists.
Durkin’s grandiose prediction that his film “will go down in history”
will surely prove correct, although perhaps not for the reasons he
imagined.
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