Tag Archives: consensus

The Halt in Warming

For those that read widely on the subject of climate change, you will no doubt be aware that there has been a long halt in warming temperatures and even James Hansen has accepted this as fact. One interesting thing about the story is the way that the story has been treated. For example, David Rose wrote about the halt in the UK’s Daily Mail back in October of last year, only to create a storm of indignation:

Last week The Mail on Sunday provoked an international storm by publishing a new official world temperature graph showing there has been no global warming since 1997.

The figures came from a database called Hadcrut 4 and were issued by the Met Office and the Climatic Research Unit (CRU) at East Anglia University.

We received hundreds of responses from readers, who were overwhelmingly critical of those climate change experts who believe that global warming is inevitable.

But the Met Office, whose lead was then followed by climate change campaigners, accused The Mail on Sunday of cherry-picking data in order to mislead readers. It even claimed it had not released a ‘report’, as we had stated, although it put out the figures from which we drew our graph ten days ago.

The Met Office response referred to can be found here. In response to the hail of criticism, David Rose responded with a question at the head of an article; ‘so who are the “deniers” now?’ and it is a very apt question. He writes about the criticism of his article before saying (emphasis added):

But then last week, the rest of the media caught up with our report. On Tuesday, news finally broke of a revised Met Office ‘decadal forecast’, which not only acknowledges the pause, but predicts it will continue at least until 2017. It says world temperatures are likely to stay around 0.43 degrees above the long-term average – as by then they will have done for 20 years.

This is hugely significant. It amounts to an admission that earlier forecasts – which have dictated years of Government policy and will cost tens of billions of pounds – were wrong. They did not, the Met Office now accepts, take sufficient account of  ‘natural variability’ – the effects of phenomena such as ocean temperature cycles – which at least for now are counteracting greenhouse gas warming.

Surely the Met Office would trumpet this important news, as it has done when publishing warnings of imminent temperature rises. But there was no fanfare. Instead, it issued the revised forecast on the ‘research’ section of its website – on Christmas Eve. It only came to light when it was noticed by an eagle-eyed climate blogger, and then by the Global Warming Policy Foundation, the think-tank headed by Lord Lawson.

Then, rather than reporting the news objectively, Britain’s Green Establishment went into denial. Neither The Guardian nor The Independent bothered to report it in their paper editions, although The Independent did later run  an editorial saying that the new forecast was merely a trivial ‘tweak’. Instead, they luridly reported on the heatwave and raging bushfires in Australia.

For those of you who do not read widely on the subject, this halt in warming might come as something of a surprise. For example, I did a search of the New Zealand Herald, and there was lots of reporting of alarm, but no article that seemed to cover the halt. I say ‘seemed’, as I only looked at the headline and summaries for most of the articles. However, I did look at some in more depth, such as this editorial, from which I will provide a quote:

In a review of climate study this week, we reported that New Zealand might fare quite well under the predicted 4C increase in average global temperatures. Here the expected rise is 3C.

Victoria University’s Dr Jim Renwick, a lead author of the United Nations Intergovernmental Panel’s next report, said the North Island’s climate would be closer to Queensland’s and the South Island would have the North Island’s conditions. It does not sound so bad.

Melting polar ice caps would raise sea levels a metre, and droughts would be more frequent in eastern regions of New Zealand.

It remains wiser to contribute what we can to international efforts that might reduce or at least slow the rate of warming.

The next IPCC report will examine engineering responses to climate change, such as extracting carbon dioxide from the atmosphere and sending sun-reflecting particles into the stratosphere.

It is something to ponder as we bask in another hot, sunny weekend. And spare a thought for Australia where temperatures are predicted to set records this weekend.

If this is a symptom of global warming we are all in it together.

Oddly, there is no mention of the halt in warming. At least one thing is to their credit; although they tenuously link climate change to the recent heat wave in Australia in the quote, at least they suggest in the introduction that ‘Heat waves in Australia and NZ may not be a symptom of climate change’. This is at least a little better than the reporting elsewhere, including in one of their other articles, which clearly linked recent heatwaves to global warming, and also included this:

And Australia won’t be the only country to suffer from rising temperatures.

A recent study done by Britain’s Met Office showed that 2013 is on course to be the hottest ever globally.

This is odd, as the UK’s Met Office is actually predicting several years of a pause in warming. In fact, when all is said and done, the reporting of the halt in warming is distinctly odd. Very odd. Or rather the absence of headlines is odd. As David Rose suggests, it should be trumpeted. It should be headline news.

The Significance of the the News

The real significance of the news is in what it confirms about the state of the science, and in particular about climate models. For example, GWPF have helpfully translated a Spiegel article, and it includes these comments (emphasis added):

Scientists previously thought 14 years without further warming could be brought into line with their forecasts – but not “15 years or more,” as NASA scientists stated four years ago in the journal “Bulletin of the American Meteorological Society”. In an email to colleagues a renowned scientist wrote on 7 May 2009, at a time when the warming standstill had already lasted for eleven years: “the ‘no upward trend’ has to continue for a total of 15 years before we get worried.”

[and they ask scientists for their views]

However, climate models do not represent stratospheric water vapour “very well”, admits Marotzke. The forecasts remain vague.


Thus there are plenty of plausible explanations for why global warming has temporarily slowed down. However, the number of guesses also shows how inexact the climate is understood. Could La Niña, for example, continue to have a cooling effect? “The jury is still out on this”, NASA explains.

The article includes several theoretical explanations for the halt, but none of them are given as firm explanations but are instead competing unconfirmed theories lacking in evidential support.

Does this look like the science is settled? It looks far from settled, and only serves to highlight that the climate models used by researchers are, at best, incomplete. Now at this point, you would expect that this would be a cause for celebratory headlines. After all, the story so far is that ‘we are all doomed’, and this narrative is derived from the very same models that are demonstrably inadequate. So what is the reaction of the alarmists to this? The Huffington Post calls the Met Office’s revisions a ‘distraction’ and simply asserts:

Our focus must at all time be on debating and researching new technologies and efforts to tackle climate change – repeated debates about whether climate change is happening or not are extremely unhelpful and distracting at this critical point in time. The argument should be long gone now!

I really like the exclamation mark at the end! The distraction that is being referred to is whether the science is settled. I picked the Huffington Post as an exemplar, as it is arguing that:

[…] climate sceptics are constantly looking for gaps in how climate science is being reported in order to exploit them and fundamentally question whether climate change is actually happening.

It is not gaps in the reporting that are interesting to skeptics, but the gaps in the science. In this case, the failure of the models used to predict catastrophic global warming to predict the climate. They are not working. There are gaps in the science, and these reflect in the models. If the models are wrong, then the output of the models cannot and should not be trusted, at least not at present.

There is nothing to say that the models cannot be improved, but when there are competing and debated explanations for the current halt in warming there are some tough questions that need to be addressed. What is very apparent in the Spiegel article is that there are some very fundamental questions about climate science and this will reflect in the models as they stand. However for the future, assuming that any of the theories are correct, which one goes into revisions of the models? Each of the explanatory theories is different, and the use of each will therefore create a very different model. Each theory is contested or lacks evidential support. Or perhaps the models should use more than one of the explanatory theories but how will they be used together?

And this is exactly why this news should be headlines. Climate scientists cannot even agree on the explanation for the halt in warming. We have been told that the science is settled, that there is consensus on the science, that the debate is settled…and on and on….but it is not settled, and there is no consensus.

Instead, there is uncertainty, unknowns and debate over theory. Furthermore, when being told all these tales of certainty, we were being lied to. Faced with the failure of their models, they have been forced to admit the critical gaps in the science. Yes, they will update their models, perhaps using one, or a combination of the theories (hopefully with some evidence in place by then). The models might even improve. But will this change the tune that is sung? I very much doubt it. Instead, the media will continue to pour out the lie that the ‘science is settled’. This will be promoted by the very same scientists who have been falsely claiming that the science has been settled up to this point in time.

For all of the scientists who have claimed that the science is settled, there is a very basic question; why should be believe you in the future, when it is apparent that you have lied? In other words, the scientists who have claimed consensus, that the science is settled, and even described skeptics as ‘deniers’, have a problem with credibility. ‘Trust us, we’re scientists’ has been the underlying refrain but they have lied to us, and they have been caught lying. There never has been the certainty that they have promoted and there never has been a consensus, not even amongst those who have supported the catastrophic warming theory. It was all lies. After all, if they cannot explain and agree on the recent absence of warming, where is the consensus and certainty?

Who cares about the ‘consensus’

This is a very quick post, as I am a little challenged for time at the moment.

I came accross a very good post over at Climate etc. regarding the ‘consensus‘. One of the most interesting arguments that I picked up was that we should not care about the consensus argument, as consensus is not the benchmark of good science. Judith Currie wades into the question with the following:

The climate community worked for 20 years to establish a consensus.  The impact of the consensus probably peaked in 2006-2007, at the time of publication of the AR4.  Courtesy of the CRU emails, we now understand the sausage making that went into creating the consensus.  Manufacturing a consensus in the context of the IPCC has acted to hyper-politicize the scientific and policy debate, to the detriment of both.  Its time to abandon the concept of consensus; consensus matters far less than simply being right and the arguments themselves that ought to be the focus for discussion.

My concern about the use of the supposed consensus to stifle the debate is more mundane. For most people, there is only a limited interest in the climate change debate. Unlike those who take an active interest, they are not going to delve into philosophy of science, or read the complex discussions about what is good and what is not good science. I suspect that, for many people, the idea of a consensus of scientists will simply be taken as being an indicator of the truth of the argument.

I agree that there is a difficulty of what the consensus might be about – e.g. the planet has warmed versus we are all doomed if we do not change our behaviour – but this is perhaps not how most of the public might see it. The way that the consensus is presented is that there is broad agreement on the latter of my two examples.

As such, I think the promotion of the idea of a consensus really matters. It is important that we take into account the nature of the interest of most people in the climate change debate, and recognise that those who are less interested will often only take home simple messages from what they hear/see/read. The message of a ‘consensus’ is powerful, and is therefore worth addressing.