Science and Politics
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Transcript of Science and Politics
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Science and Politics
Part II
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Climate Controversies
Session 4
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1. The discovery of climate change
Discovery of the greenhouse effect byJoseph Fourier (1824-1827)
John Tyndall identifies carbon dioxyde as a driver of the greenhouse effect (1860-1870). Water vapor is the main gas that controls temperature. First measurements of air quality.
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Law of Arrhenius (1896): If the quantity of carbonic acid rises following a
geometric progression, the resulting rise in temperature will follow an arithmetic progression.
He establishes that a doubling of CO2 quantity in the atmosphere would lead to a temperature rise comprised between 5 and 7°C.
According to Arrhenius, the doubling of CO2 would take about 3000 years. It will actually take ony about one century.
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Roger Revelle makes the first measurements of CO2 concentration in the 1950s. He shows that climate change is linked to human activity(1956).
James Hansen shows that climate change is happening faster than expected. His testimony before US Congress marks the entry of climate change into the realm of politics.
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1957: First measurements in Hawai’i and Antarctica
1970s: James Hansen starts modelling climate change
Jimmy Carter commissions a report by the American Academy of Sciences
Reagan, Bush and Clinton don’t care, Gore worries - but he’s only VP.
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The establishment ofa scientific consensus
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Scientists in the policy process
Increasingly present Especially in policy fields where knowledge is
technical
Are they neutral?
We assume that they are, but:
Epistemic communities (Haas & Keohane) Advocacy coalitions (Sabatier & Jenkins-
Smith)
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Science and expertise
Is it the same thing? Science for the sake of it, or science for policy
Are experts different from scientists?
Often the same people Are they neutral? Do they have to be neutral?
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2. At the core of the policy process: The IPCC Created in 1988 Key-role in the policy-making process:
Establish a common scientific basis for the negotiation
An intergovernmental organisation… in which governments play a role
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The creation of the IPCC
Established in 1988 jointly by UNEP and WMO At the request of sceintists themselves, concerned that
science was not followed by policy actions. Open to all member countries of UNEP and WMO Main task: assess the risks and impacts of climate
change The IPCC doesn’t conduct research directly, but
synthesises the best research on the topic. And make it accessible to policy-makers.
Main outcome: the Assessment Reports, issued every 5 or 6 years (4 reports so far) 5th Assessment Report due in 2013.
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A political history
The consensus on climate science was the IPCC’s key endeavour
Process started in the 1980s
Whistle-blower role
A key episode: the replacement of Dr Watson
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Dr. Robert Watson, the highly respected leader of the Inter-Governmental Panel on Climate Change, was blackballed in a memo to the White House from the nation's largest oil company. The memo had its effect last Friday, when Dr. Watson lost his bid for re-election after the administration threw its weight behind the ''let's drag our feet'' candidate, Dr. Rajendra Pachauri of New Delhi, who is known for his virulent anti-American statements.
Why is this happening?Because the largest polluters know their only hope for escaping restrictions lies in promoting confusion about global warming.Just as Enron needed auditors who wouldn't blow the whistle when the company lied about the magnitude of its future liabilities, the administration needs scientific reviews that won't sound the alarm on the destruction of the earth's climate balance.
Al Gore, NY Times, 21 avril 2002.
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U.S. to Back Scientist From India To Replace Global Warming Expert
Auto manufacturers and oil companies have long seen Dr. Watson as a foe, and their lobbyists have said that Dr. Pachauri, who has worked with industry in the past, was clearly preferable.
- A. Revkin, NY Times, 3 avril 2002.
Dr. Pachauri heads the Tata Energy Research Institute in New Delhi; Tata is one of India's largest industrial groups.
NY Times, 20 avril 2002.
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Mr. Gore's derogatory statements about me reflect deep disappointment at my election as chairman of the Intergovernmental Panel on Climate Change, with 76 votes for me against 49 for his protégé, Dr. Robert T. Watson.
R.K. Pachauri, NY Times, May 1st, 2002.
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And yet, five years later…
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Composition and neutrality
About 2,500 (unpaid) scientists, appointed by their government: lead authors, contributing authors, reviewers.
A balance between: Junior and senior researchers Men and women Researchers from developped and developing
countries
Key assumption: collective neutrality emerges from the addition of individual subjectivities.
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Structure of the IPCC
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The scientific process The IPCC does not carry out any research The Assessment Reports are just a synthesis of
previously published works Triple peer-reviewing
Peer-review at the time of publication of original works Scientific peer-review by experts Political peer-review by governments
The reports need to be approved by both all scientists and all governments: they are bpth a scientific and a political document
Reports organised on the basis of scenarios
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A political actor?
The IPCC reports pave the way for policy milestones: UNFCCC 1992, Kyoto 1997
Interferences from governments Attacked as a political actor, yet responds as a
scientific actor.
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Comments and criticisms Highly authoritative, due to intensive peer-
reviewing But this authority is currently being questioned: ‘climate
gate’, mistake about the Himalaya glaciers, etc. The IPCC as a political actor How to address these criticisms? Can we doubt about climate science?
Minimal consensus Are the reports too prudent and conservative?
Scenarios underestimate reality Need for revision Need for a global reform of the IPCC?
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3. Climate skepticism
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Memo by F. Luntz2003
The scientific debate remains open. Voters believe that there isno consensus aboutglobal warming withinthe scientific community.(…) You need to continue to make the lack of scientific certainty a primary issue in the debate…
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The climate gate
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From: Phil Jones <[email protected]> To: [email protected] Subject: Fwd: CCNet: PRESSURE GROWING ON CONTROVERSIAL RESEARCHER TO DISCLOSE SECRET DATADate: Mon Feb 21 16:28:32 2005Cc: "raymond s. bradley" <[email protected]>, "Malcolm Hughes" <[email protected]>
Mike, Ray and Malcolm, The skeptics seem to be building up a head of steam here ! Maybe we can use this to our advantage to get the series updated !... …The IPCC comes in for a lot of stick. Leave it to you to delete as appropriate !
Cheers Phil
PS I'm getting hassled by a couple of people to release the CRU station temperature data. Don't any of you three tell anybody that the UK has a Freedom of Information Act !
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P. Jones: “I’ve just completed Mike’s Nature trick of adding in the real temps to each series for the last 20 years (i.e from 1981 onwards) and from 1961 for Keith’s to hide the decline.”
> Wrongly and over-interpreted by the media and climate sceptics
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Are the media guilty?
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4. Communicating climate change
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Main issues Communicate science Stimulate action Make climate change taken for granted Mainstream climate change into politics
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Different repertoires Alarmist
‘Climate porn’ Maximising the problem and minimising the solution
Small actions Tackling climate change seems easy, cheap and even fun
Economic benefits Techno-optimism ‘There’s nothing to do’ ‘We’ll be fine anyway’
> Are these divergent repertoires an asset or a problem?
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Problems in communicating climate change
Uncertainties Seasonal variations Complexity Impact of small actions (free-riding) Multiplicity of actors Skepticism Long-term effects Ideological views
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Role of the media Creating bias where there’s consensus
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Climate skeptics Main arguments Climate change is not occurring
The global climate is actually getting colder
The global climate is getting warmer,
but not because of human activities
The global climate is getting warmer,
in part because of human activities, but this will
create greater benefits than costs
The global climate is getting warmer, in part because of human activities, but the impacts are
not sufficient to require any policy response
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Public opinions
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BBC Climate change poll – February 2010
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ADEME Report 2013One French out of three is climate-sceptic
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The older you get, the more sceptical you are