Showing posts with label global warming. Show all posts
Showing posts with label global warming. Show all posts

25 October 2020

The Myth of the Global Cow


Posted by Martin Cohen

Data crunchers have started to attack farms on the basis of statistical creations such as ‘The Global Cow’. Of course, there’s no such thing. The sublimation of differences in concepts like the average cow, leaves cows and sheep who are helpfully and quietly grazing grass suddenly accused of inefficiently expropriating vast tranches of valuable land, while farmers keeping animals fed soya in sheds can be reinvented and presented as efficient and ‘climate friendly’. And yet summarised and simplified messages creatively abstracted from the data itself construct a global picture, skewed by preconceived ideas, and designed to influence policy decisions.

    • The idea of ‘the Earth's average temperature’ is also an exercise in mental gymnastics - which parts of the oceans are included - or of the atmosphere? Does it make sense to have hypothetical data points in uninhabited regions? Even NASA and the Met Office cannot agree. 

   • Food policy in particular always seem to consist of sharp, Manichean (good versus evil), divisions even as most things are nuanced and a matter of detail - and degree. Missing from both types of thinking is any acknowledgement that the experts behind the expert consensus are also political and ideological subjects, and the vast majority of respected science (or any research) is produced from a mainstream and shaped by the policy objectives of funders.   

But let’s just take up that idea of a ‘global cow’. Even small farms can be completely different in terms of differing habitats and differing good or really bad practices in one place. Last year I had a series of email exchanges with a Welsh couple in the Brecon Beacons (on the England/ Wales border) about their efforts to graze farm animals ‘sustainably’. The two explained how they have mountain grazing rights on the Brecon beacons and have cattle grazing an ancient hill fort, to preserve the archaeology from the incursion of scrub and to enhance the diversity of the grassland untouched by a plough for millennia, if at all. All their fields are natural pasture kept in a grazing rotation. One of the fields is an iron age enclosure and has never been ploughed in modern times! Yet now the call everywhere is to shun animal farming and rely solely on crops. 

The couple keep grassfed (Dexter breed, as in  the picture above) cattle and sheep and rare-breed pigs, all raised outdoors and supplemented  by a range of non-soya concentrates, and farm amazingly sustainably. They firmly believe that the sheer complexity of their farm demonstrates that the global environmentalist models about ‘Norm’ cannot possibly map onto reality anywhere on the planet. 

Instead, their farm is a case study in how the new ‘plant-based food’ movement risks upturning delicate relationships between humans and nature but also a more anthropological study in how apparently deeply-entrenched attitudes towards long-established activities and traditions can be rapidly changed by elite groups using sophisticated control of public information.

28 November 2015

The Man who Invented Climate Change (and then disowned it)

Posted by Martin Cohen
The man who started it all off - Herbert Lamb. Source WP:NFCC#4
History, as ever gives an insight into the Climate Change debate. The historian of science, Bernie Lewin, has researched the views of the British scientist who for many years struggled to persuade governments that actually, yes, climate did change. Hubert Lamb, an academic and the founder of the influential Climatic Research Unit (better known by its acronym ‘CRU’) at the University of East Anglia in the UK, is conventionally credited with putting manmade Climate Change on the world agenda. He doesn't get many mentions though - because he came to detest the poltical abuses of his ideas.

Lamb was once described by one of his successors at the CRU, Trevor Davies ( probably self-servingly) as ‘the greatest climatologist of his time’. Davies credits him with ‘convincing the remaining doubters of the reality of climate variation on time-scales of decades and centuries’ and an obituary in Nature offers his great achievement as overturning the ‘old orthodoxy’ of climate stability. Other scientific admirers suggest that it was Lamb who first introduced the idea that climatic change has happened, and is still happening, on human time scales. But Bernie Lewin has no doubt that much of this is political fiction, noting that Lamb was far from the first to introduce the idea of a constantly changing climate. And where Lamb’s successor at his climate research centre found it, ‘ironic’ that even as the world became ‘acutely aware of global climate change’, Lamb maintained a guarded attitude to the importance of greenhouse warming, Lewin sees nothing odd in the position of a scientist advocating the idea of natural climate change being ‘guarded’ about the evidence of a global human influence. Awareness of past variability would rather tend towards scepticism of claims to have identified a single, new and extraordinary cause of climate change.

Hubert Lamb, in fact, was an old-school meteorologist, and there was something of a clash of cultures between those like him brought up on geology and weather records, and the new kinds of ‘climate scientists’ only recently tempted by research money into applying their mathematical skills to the natural world. Lamb expressed open scepticism of the theoretical physics used now to predict future climate trends noting that often the models failed to match reality. He argued for:

* the existence of negative feedbacks dampening warming trends where the climate modellers allowed only positive feedbacks amplifying them;
* that 20th century climate variation was better explained by natural factors (such as solar and volcanic effects);
* wonders how accurate the figures relied on for identifying relatively tiny temperature trends even were.

Such doubts led him to spend time analysing the political impetus for the new climate science, including vested interests, and the reasons why climate modelling in particular received so much support. Lamb completed his memoirs in 1997, just a few months before Kyoto, the international summit in which man-made Climate Change was given it preeminent role. In these memoirs he laments:
‘It is unfortunate that studies produced nowadays treat these and other matters related to changes of climate as if they are always, and only, attributable to the activities of Man and side-effects on the climate.’

This post is lightly adapted from Martin Cohen's book:
Paradigm Shift: How expert opinions keep changing on life, the universe, and everything




02 February 2015

BBC propaganda

BBC propaganda

An alarming insight into how the BBC operates?
 

 

  Who's Churning the BBC Machine?

 • 'How the BBC became a propaganda machine for climate change zealots 
 - as recounted by its former news frontman, Peter Sissons




Based on  the Daily Wail story which in turn drew on Peter Sissons's memoirs, with additional comments by Pi editors.

Sissons diagnoses it as 'political correctness'. Worrying about manmade climate change was an incontrovertible duty - a view also taken, for example, at the Guardian and the Times newspapers. But Sisson's writes:

'From the beginning I was unhappy at how one-sided the BBC's coverage of 
the issue was, and how much more complicated the climate system was than 
the over-simplified two-minute reports that were the stock-in-trade of 
the BBC's environment correspondents.

These, without exception, accepted the UN's assurance that 'the science 
is settled' and that human emissions of carbon dioxide threatened the 
world with catastrophic climate change. Environmental pressure groups 
could be guaranteed that their press releases, usually beginning with 
the words 'scientists say..'. would get on air unchallenged.

On one occasion, an MP used BBC airtime to link climate change doubters 
with perverts and holocaust deniers, and his famous interviewer didn't 
bat an eyelid.

On another occasion, after the inauguration of Barack Obama as president in 2009, the science correspondent of Newsnight actually informed viewers: 
'scientists calculate that he has just four years to save the world'. What she didn't tell viewers was that only one alarmist scientist, NASA's James Hansen, had said that.

My interest in climate change grew out of my concern for the failings of 
BBC journalism in reporting it. In my early and formative days at ITN, I 
learned that we have an obligation to report both sides of a story. It 
is not journalism if you don't. It is close to propaganda.





The BBC is bound by charter, of course, to be accurate and not conduct campaigns for causes. Exceptions however, can be authorised. The BBC's editorial policy on climate change was spelled out in a report by the BBC Trust in 2007. This announced that the BBC had held 'a high-level seminar with some of the best scientific experts and has come to the view that the weight of evidence no longer justifies equal space being given to the opponents of the consensus'.

The Trust promised thqt that climate change dissenters had been, and still would be, heard on its airwaves. 'Impartiality' in keeping with their status as a 'minority view'. The BBC report adds: 'as long as minority opinions are coherently and honestly expressed, the BBC must give them appropriate space.' (By which it meant the same sort of thing as allowing racist parties might be allowed to comment on immigration policy, for example.)

Indeed, Sissons notes: 'In reality, the 'appropriate space' given to minority views on climate change was practically zero.'

One mystery that has perplexed PI researchers, is who WAS at this important seminar assessing the status of climate science. Numerous Freedom of Information requests have for the guest list have been brushed off - but then a list turned up on the Wayback Machine revealing that they were... a mix of amateurs, business men with profits to make from the AGW scare - and greenies.


For a start, the seminar was partly funded by the UK government and organised in conjunction with a lobby group called the International Broadcasting Trust, both of which had a particular policy aim of increasing coverage about human environmental damage.
Likewise Exeter is a nice town, but it’s an awfully long way from Broadcasting House in London. But it is the base of the UK government’s research unit whose job is to produce evidence of the effects of human-made global warming. 
When an Italian climate sceptic found the names of the people at the expert conference on a long-forgotten web-page the cat was really out of the bag. The list showed that far from a representative sample of scientific opinion, the meeting consisted of scientists whose jobs revolved around proving the theory of human-made climate change; campaigners whose commitment to the cause of fighting global warming was in inverse proportion to their expert knowledge; and groups with financial interests such as British Petroleum.


This all came out after Sissons wrote his memoris. But in these, he says that there is one brief account of the proceedings, written by a conservative commentator who was there.

'He wrote subsequently that he was far from impressed with the 30 key BBC staff who attended. None of them, he said, showed 'even a modicum of professional journalistic curiosity on the subject'. None appeared to read anything on the subject other than the Guardian.'

And, as we know too, Guardian journalists, even so-called environment ones, rely on Wikipedia! for their information.

Sissons adds that this attitude was underlined a year later in another statement: 'BBC News currently takes the view that their reporting needs to be calibrated to take into account the scientific consensus that global 
warming is man-made.'

'Those scientists outside the 'consensus' waited in vain for the phone to ring', notes Sissons.
'It's the lack of simple curiosity about one of the great issues of our 
time that I find so puzzling about the BBC. When the topic first came to 
≠prominence, the first thing I did was trawl the internet to find out as 
much as possible about it. Anyone who does this with a mind not closed by religious fervour will 
find a mass of material by respectable scientists who question the 
orthodoxy. Admittedly, they are in the minority, but scepticism should 
be the natural instinct of scientists -  and the default setting of 
journalists.'

Yet the cream of the BBC's inquisitors during my time there never laid a 
glove on those who repeated the mantra that 'the science is settled'. 
On one occasion, an MP used BBC airtime to link climate change doubters 
with perverts and holocaust deniers, and his famous interviewer didn't 
bat an eyelid.
(PI adds: This is probably a reference to the present Deputy Prime Minister of the UK, Nick Clegg, who used this comparisonn in the pre-election debates. Clegg's wife has a good reason to be concerned about the issue - she is the director of a business that makes wind turbines, and relies on government largesse.)

Sissons makes another interesting point too:

'Meanwhile, Al Gore, the former U.S. Vice-President and climate change 
campaigner, entertained the BBC's editorial elite in his suite at the 
Dorchester and was given a free run to make his case to an admiring 
internal audience at Television Centre.'

At the BBC, Gore's views were above journalistic scrutiny, 'even when a 
British High Court judge ruled that his film, An Inconvenient Truth, 
≠contained at least nine scientific errors, and that ministers must send 
new guidance to teachers before it was screened in schools. From the 
BBC's standpoint, the judgment was the real inconvenience, and its 
environment correspondents downplayed its significance.'

Sissons also records how daily reporting turned into daily applauding:

'At the end of November 2007 I was on duty on News 24 when the UN panel 
on climate change produced a report which later turned out to contain 
significant inaccuracies, many stemming from its reliance on non-peer 
reviewed sources and best-guesses by environmental activists.'

But the way the BBC's reporter treated the story was as if it was beyond 
a vestige of doubt, the last word on the catastrophe awaiting mankind. 
The most challenging questions addressed to a succession of UN employees 
and climate activists were 'How urgent is it and 'How much danger are 
we in?' Back in the studio I suggested that we line up one or two sceptics to 
react to the report, but received a totally negative response, as if I 
was some kind of lunatic.'