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Scientists lambast The Australian for misleading article on deep ocean cooling

  • 28 Jul 2014, 13:50
  • Roz Pidcock

An article in Friday's  The Australian suggested brand new research by two eminent oceanographers casts doubt on scientific understanding of global warming. But the authors of the research have taken the newspaper to task for its coverage of their work.

The research by Carl Wunsch from Harvard University and Patrick Heimbach from MIT found temperatures seem to be falling in parts of the very deep ocean, known as 'the abyss'.

In a piece headline headlined "Puzzle of deep ocean cooling", journalist Graham Lloyd of the Australian interpreted the new research for readers:

"The deep oceans have been cooling for the past two decades and [so] it is not possible to say whether changes in ocean heat adequately explain the "pause" in global warming".

But the authors think Lloyd's article is misleading. In an  letter to the editor in today's edition of the Australian, they say:

"The article by Graham Lloyd will likely leave a mis-impression with many of your readers concerning the substance of our paper."

Wunsch tells us Lloyd's article "cherrypicks" statements from their paper and "misses some key points".

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Climate scientists tell us why it’s “utterly, utterly normal” to have a paper rejected

  • 09 Jul 2014, 13:30
  • Roz Pidcock

TimesdissentAn  article in yesterday's Times featured claims that a climate scientist's work was "censored" because it "questioned the accuracy of computer models used to predict global warming".

Rather less excitingly, what actually happened was an "utterly, utterly normal" example of peer review in action, scientists tell us.

The scientist involved agrees that the journal's comments were correct, and his paper was subsequently published - it's available here.

So what's the story?

Accusations of censorship

The Times  article - entitled 'Voices of dissent drowned out by climate change scientists' discusses research German climate scientist Vladimir Semenov submitted to the Journal of Climate in 2009.

Ben Webster, an experienced environment correspondent, suggests parts of Semenov's paper were "deleted" before publication because they represented a "voice of dissent". Webster says:

"The paper suggested that the computer models used by the UN's Intergovernmental Panel on Climate Change (IPCC) were flawed, resulting in human influence on the climate being exaggerated and the impact of natural variability being underplayed."

Semenov is quoted as suggesting the journal's intervention amounted to "some kind of censorship". Had the paper not been revised, it could have had "profound implications", the Times claims.

 

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The verdict on smart meter privacy, security and health concerns as UK smart meter rollout begins

  • 08 Jul 2014, 10:00
  • Ros Donald

Adapted from a blog originally posted in June 2012

Will the UK government's planned rollout of smart meters leave homes vulnerable to marketing companies desperate for us to overshare information about our most personal habits? Will an information grid linked to energy delivery systems be open to hackers, leaving whole districts vulnerable to disruption? Will smart meters really create a "spy in every home", as the Daily Mail has reported? We take a look at the risks.

Smart meters give people detailed information about how much energy they use and when. The theory is that this can help reduce bills, and level out peak-time stresses on the grid. As such, the UK Department of Energy and Climate Change (DECC) is promoting smart meters as a tool for helping the country to reduce its greenhouse gas emissions, and plans to ensure one is installed in every home starting this week.

Privacy: will my smart meter be able to track what I do at home?

The short answer is yes - as long as you're using electricity. Energy meters show which appliances use the most electricity so that you can plan energy use effectively. Because of the different ways that appliances use electricity, such data could, for example, reveal whether you use medical devices or baby monitors, or even show the TV programme you're watching. And obviously, it can give information on when you're in or out, or track when you toilet light goes on. So, technically, it might know when you are on the loo.

The Mail reported that this information will be "will be collected every 30 minutes and beamed from a box in the home to the central databases." Some groups are worried about this. The European Data Protection Supervisor (EDPS), which tracks privacy issues in Europe, produced a report last week warning that smart meter rollout will " enable massive collection of personal data which can track what members of a household do". EDPS is concerned that patterns and profiles could be mined for marketing and advertising, or price discrimination, and is asking the European Commission to consider legislating to protect consumers.

It does sound pretty alarming. However, the government appears to have taken some of these worries to heart already, outlining plans in April designed to ensure consumers have control over how much data they share with suppliers and third parties. 

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Factcheck: What’s the significance of a record high in Antarctic sea ice?

  • 07 Jul 2014, 16:20
  • Roz Pidcock

Sea ice around Antarctica is growing, and it's a scientific puzzle. But while the Mail on Sunday suggests this means climate change is less of a problem than scientists say, sea ice is only part of what's going on in Antarctica, and the world as a whole is losing ice rapidly.

A record high

An article in yesterday's Mail on Sunday carries the headline:

'Global warming computer models confounded as Antarctic sea ice hits new record high'

This follows news last week from scientists at the University of Illinois that the area covered by sea ice surrounding Antarctica hit a record high on 29th June, with about two million square kilometres in June more ice compared to the long term average.

Antractic Sea Ice _June 2014

Antarctic sea ice reached a record high in June, with 2.1 million square kilometres more than the long term average. Source: US National Snow and Ice Data Centre ( NSIDC)

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Factcheck: Has the US shale gas revolution saved more carbon than the entire solar and wind industry?

  • 07 Jul 2014, 14:55
  • Simon Evans

CC2.0 Dennis Dimick

The American shale gas revolution shaved more off global carbon emissions than all the world's windfarms and solar panels put together in 2012 according to Chris Faulkner, boss of US fracking firm Breitling Energy.

We think he's wrong. Even with some pretty heroic assumptions, he's only almost right. Let's see why.

The UK connection

Faulkner made his claim at a fringe meeting of the Council of Europe in Strasbourg. He had been invited to speak by UK Conservative MP David Davis, a long-standing critic of climate change policies in general and wind energy in particular.

Faulker said:

"In 2012, the shift to gas has managed to reduce carbon dioxide emissions by about 300 million tonnes. Compare this to the fact that all the wind turbines and solar panels in the world reduce carbon dioxide emissions, at a maximum, by 275 million tonnes. In other words, the US shale gas revolution has by itself reduced global emissions more than all the well-intentioned solar and wind in the world."

US coal emissions

To start with, let's look at US coal emissions. In 2012, US coal plants emitted 1,653 million tonnes of carbon dioxide. That's 529 million tonnes below peak coal emissions, which were 2,182 million tonnes in 2005.

Let's generously assume all of that reduction is due to cheap shale gas displacing coal use. It takes about half as much carbon to generate a unit of electricity from gas as it does from coal. So the maximum carbon saving is half the coal emissions avoided. That's 265 million tonnes of carbon dioxide, in the same ballpark as the 300 million tonnes Faulkner claimed.

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Factchecking claims the IPCC says there will be no dangerous global warming this century

  • 23 Jun 2014, 17:30
  • Mat Hope & Roz Pidcock

K-L Poggemann

The Intergovernmental Panel on Climate Change has warned the effect of unchecked global warming could be "severe, pervasive and irreversible".

To get an idea of how global temperatures could evolve in the next 85 years, the IPCC looks at a range of scenarios, or pathways. In all but the IPCC's most stringent mitigation pathway, the world looks on course for dangerous levels of warming.

So how did climate skeptic campaigner, Matt Ridley, come to the opposite conclusion in an  article last week? He argues that even the IPCC's most severe scenario doesn't suggest dangerous levels of warming. We take a look at the IPCC's pathways to understand how it projects future warming - and where Ridley went wrong.

Warming scenarios

The IPCC looks at a wide range of potential futures based on how big or small countries' collective greenhouse gas emissions are. To examine these, it developed a range of emissions pathways - each known as Representative Concentration Pathways (RCP).

Ridley describes the IPCC's  four pathways in his recent article, and claims none of them imply dangerous levels of warming. He begins:

"Three of the models show moderate, slow and mild warming, the hottest of which leaves the planet just two degrees Centigrade warmer than today in 2081-2100. The coolest comes out just 0.8 degrees warmer."

Ridley's talking about the IPCC's three lowest scenarios - leaving out the one where emissions continue unchecked for now. But he seems to have got the numbers wrong.

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Lord Deben and the Committee on Climate Change agree on onshore wind's potential

  • 28 May 2014, 16:00
  • Mat Hope

CC: Oast House archive

Is the government's climate change advisor arguing internally over how many onshore wind turbines the UK needs?

The Times today reported that Lord Deben - who heads the Committee on Climate Change (CCC) - thinks the UK already has enough onshore wind power in the pipeline to hit its targets. The paper claims Lord Deben's statement puts him at odds with the CCC. But the CCC and Lord Deben tell us that's not the case.

2020 targets

The Times's headline today declared that "Britain has enough wind turbines". It based the statement on an interview with Lord Deben.

The EU requires the UK to get  15 per cent of its energy from renewable sources by the end of the decade. Referring to that commitment, Lord Deben told The Times "we have already got enough onshore wind to 2020 to meet that part of the portfolio."

That seems right. The government's  renewable energy roadmap suggests the UK will need around 13 gigawatts of onshore wind in 2020 to meet its commitment.

Its latest data suggests there's a total of 16.1 gigawatts of onshore wind in operation and in the pipeline.

The data  shows there's currently seven gigawatts of onshore wind online (the dark blue chunk), and 12.5 gigawatts under or awaiting construction and in the planning process (light blue). That's a total of 19.5 gigawatts. The government assumes around 3.4 gigawatts of that won't get built (the green chunk) as some projects will fail to secure financing or hit other complications.

Still, as Lord Deben suggests, 16 gigawatts would be more than enough to meet the government's 2020 target.

DECC renewables roadmap onshore windBeyond 2020

So where's the conflict?

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Factcheck: Three things the Guardian’s Simon Jenkins gets wrong about coal’s supremacy, and one he gets right

  • 16 May 2014, 14:00
  • Mat Hope

Coal continues to reign supreme despite the obvious benefits of switching to nuclear and gas, and boffins at the Intergovernmental Panel on Climate Change (IPCC) are at least partly to blame. Or so Guardian columnist Simon Jenkins argues this morning.

In a passionate  piece, Jenkins says governments should do away with their renewable energy ambitions and  focus on developing nuclear and gas power if they really want to address climate change. His reasoning? Investing in renewables is expensive and futile and has only served to open the door for the most polluting, most dangerous, energy source of all: coal.

We take a look at three places his  article is mistaken, as well as an important point it gets right.

Renewables "hysteria"

Jenkins blames the scientists at the UN Intergovernmental Panel on Climate Change for promoting renewable energy over what he sees as more economical and equally effective nuclear and gas power. He says:

"... the "renewables ascendancy", culminating in the hysteria of the first International Panel on Climate Change [sic] report, was a disaster. It saw any carbon combustion or nuclear reaction as equally evil, and any sun, wind or wave power as equally good - however costly".

But the IPCC doesn't equate nuclear power with coal. Far from it.

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Does the UK already have enough green energy?

  • 08 May 2014, 10:00
  • Simon Evans

Renewable electricity developers are doing themselves out of a job. According to anti-wind group the Renewable Energy Foundation, they should finish what they're working on and pack up, because we don't need any more of their power. 

Its latest  report says there are already  enough windfarms, solar panels and wood-fired power plants built, under construction or given consent to meet our renewable energy targets. That means there are a thousand more planning applications causing  needless anxiety for homeowners when they could be scrapped. 

Conservative energy minister Michael Fallon has been leading his party's  charge against onshore wind turbines and is likely to welcome these conclusions. There are only two problems with the REF report. It makes impossibly optimistic assumptions about renewable build rates. And it assumes the UK can start breaking its own laws after 2020. 

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Failure to tackle emissions from power sector could undermine environmental case for HS2

  • 28 Apr 2014, 12:30
  • Robin Webster

The environmental argument for the HS2 high speed rail link could be weakened if we keep generating electricity from fossil fuels, according to official documents. Government claims about the carbon benefits of the scheme rest on the assumption that emissions from the power sector dramatically reduce over the next fifteen years - and that might not happen. 

MPs are due to vote today on the proposed high-speed rail link to the north of England - the culmination of a political  battle to persuade reluctant MPs to support the scheme. More than 30 Tories are likely to rebel, abstaining or voting against the scheme, the BBC reports

MPs are  doubtful about the economic benefits of the scheme, and wary about the  disruption it may cause. The project's environmental benefits are also worth scrutinising, however. 

The government claims HS2 will help the country reduce greenhouse gas emissions. But coalition  battles over energy policy, and George Osborne's plans to bump up the amount of power sourced from gas, mean emissions from HS2 may be higher than it suggests. 

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