Posts Tagged ‘global warming’

editor resigns over climate sceptic’s paper

Sunday, September 4th, 2011

Wolfgang Wagner,a professor of remote sensing at Vienna University of Technology, resigned last week as editor of the scientific journal Remote Sensing. He blames himself for having approved publication, in July, of a flawed paper. The paper, co-authored by climate sceptic Roy Spencer, was ‘off topic’ for the journal, so managed to pass peer review.

The editor of a science journal has resigned after admitting that a recent paper casting doubt on man-made climate change should not have been published.

The paper, by US scientists Roy Spencer and William Braswell, claimed that computer models of climate inflated projections of temperature increase.

It was seized on by “sceptic” bloggers, but attacked by mainstream scientists.

Wolfgang Wagner, editor of Remote Sensing journal, says he agrees with their criticisms and is stepping down. ….

Roy Spencer, however, told BBC News: “I stand behind the science contained in the paper itself, as well as my comments published on my blog at drroyspencer.com.

“Our university press release necessarily put our scientific results in lay language, and what we believe they mean in the larger context of global warming research. This is commonly done in press statements made by the IPCC and its scientists, too, when reporting on research which advocates the view that climate change is almost entirely caused by humans.

“The very fact that the public has the perception that climate change is man-made, when in fact there is as yet no way to know with any level of scientific certainty how much is man-made versus natural, is evidence of that.”

Dr Spencer is one of the team at the University of Alabama in Huntsville that keeps a record of the Earth’s temperature as determined from satellite readings.

He is also on the board of directors of the George C Marshall Institute, a right-wing think tank critical of mainstream climate science, and an advisor to the Cornwall Alliance for the Stewardship of Creation, an evangelical Christian organisation that claims policies to curb climate change “would destroy jobs and impose trillions of dollars in costs” and “could be implemented only by enormous and dangerous expansion of government control over private life”.

Richard Black, “Journal editor resigns over ‘problematic’ climate paper” BBC News, 2 September 2011.

Here is Prof Wagner, in his own words:

[T]he problem I see with the paper by Spencer and Braswell is not that it declared a minority view (which was later unfortunately much exaggerated by the public media) but that it essentially ignored the scientific arguments of its opponents. This latter point was missed in the review process, explaining why I perceive this paper to be fundamentally flawed and therefore wrongly accepted by the journal. This regrettably brought me to the decision to resign as Editor-in-Chief ….

Wolfgang Wagner, “Editorial: Taking Responsibility on Publishing the Controversial Paper “On the Misdiagnosis of Surface Temperature Feedbacks from Variations in Earth’s Radiant Energy Balance” by Spencer and Braswell, Remote Sens. 2011, 3(8), 1603-1613″, Remote Sensing 3:8 (2 September 2011), pp. 1603-1613.

There is more information (with links) here.

William Braswell, co-author of the controversial paper, is a colleague of Spencer at the Earth System Science Center, University of Alabama.

paper recycling and trees

Thursday, August 25th, 2011

Two years ago TdJ posted a statement of University of Toronto philosopher Joseph Heath with the title “Paper recycling can be bad for the planet“. Heath’s argument in essence was:

Why are there so many cows in the world? Because people eat cows. Not only that, but the number of cows in the world is a precise function of the number that are eaten. If people decided to eat less beef, there would be fewer cows. Yet the same is true of trees.

In the current issue of the Canadian Journal of Economics, two economists from the University of Montreal reach the same conclusion, with a sophisticated model that embodies precisely the same reasoning. Here is the abstract of their paper:

Interest in recycling of forest products has grown in recent years, one of the goals being to conserve trees or possibly increase their number to compensate for positive externalities generated by the forest and neglected by the market. This paper explores the issue as to whether recycling is an appropriate measure to attain such a goal. We do this by considering the problem of the private owner of an area of land, who, acting as a price taker, decides how to allocate his land over time between forestry and some other use, and at what age to harvest the forest area chosen. Once the forest is cut, he makes a new land allocation decision and replants. He does so indefinitely, in a Faustmann-like framework. The wood from the harvest is transformed into a final product that is partly recycled into a substitute for the virgin wood, so that past output affects the current price. We show that in such a context, increasing the rate of recycling will result in less area being devoted to forestry. It will also have the effect of increasing the harvest age of the forest, as long as the planting cost is positive. The net effect on the flow of virgin wood being harvested to supply the market will as a result be ambiguous. An important point, however, is that recycling will result in fewer trees in the long run, not more. It would therefore be best to resort to other means if the goal is to conserve the area devoted to forestry.

Didier Tatoutchoup and Gérard Gaudet, “The impact of recycling on the long-run forestry“, Canadian Journal of Economics 44:3 (August 2011), pp. 804-813.

The link is to an earlier version of the paper, which has a slightly different title: “The Impact of Recycling on the Long-Run Stock of Trees”.

For the moment, I continue to toss all old paper into designated recycling bins, but should reconsider this action, given its negative effect on the number of trees, hence positive effect on greenhouse gases.

government taxes and spending

Tuesday, June 21st, 2011

Economics journalist David Leonhardt has posted an interesting interview with British economist Diane Coyle. He asked:

In the context of the huge long-term deficits facing rich countries, you say that recent generations have been living beyond their means. What do you think is the one kind of tax increase that would best help us live within our means? And, similarly, the one kind of spending cut?

[Ms. Coyle answered:]

The current system of taxes and government spending encourages consumption and the over-use of resources today and creates too little incentive to save and invest. The one tax to increase now is a carbon tax. You don’t even have to worry about climate change to accept it has many benefits. In particular, it will encourage innovation in noncarbon-based energy supplies from renewables to nuclear. This is a field in which the U.S. and other Western economies could build on their strong science base to build an area of technological strength for the future, and at the same time reduce dependence on oil and gas imports from overseas. There are multiple good reasons for introducing a carbon tax.

Government spending needs to be redirected away from massive corporate subsidies — including to the financial sector but also big companies in health care and agribusiness — and instead towards infrastructure investment and education (which is infrastructure of a different kind for the digital economy). But the really painful cut in expenditure needs to be in government support for older people. Across the Western economies, retirement ages and the age threshold for benefits from the government will have to increase. If not, healthy and active over-60s benefiting from the taxes of a declining proportion of working people in the population are going to bankrupt the government and undermine the arrangement of mutual benefit that keeps any society stable. And, yes, I’m fully planning on working until I’m 70.

David Leonhardt, “Making Choices ‘as if the Future Matters’“, Economix, 17 June 2011.

I like Ms. Coyle’s response, up to the point where she recommends that government reduce its support for older people. Those who work with their minds can continue to be productive to age 70, or even longer. But those whose jobs require physical effort will find it difficult to delay retirement to such an advanced age.

One of the benefits of economic growth is the possibility of increased leisure time. Just as residents of wealthy countries no longer have to work 12 hours a day, six days a week, they are no longer forced to keep working until they drop dead. Retirement is a luxury, but it is an affordable luxury for those of us fortunate enough to live in advanced economies.

Ms. Coyle would be on firmer ground if she simply stated that governments should not penalize those who continue working beyond the state retirement age. Government support for the elderly, in other words, should not be conditional on retirement, or should at least compensate pensioners fairly for delaying retirement. But this is not what she says.

British economist Diane Coyle (born 1961) is author of The Economics of Enough: How to Run the Economy as If the Future Matters (Princeton University Press, 2011). A copy is on my desk, and I hope to read it soon.

Bill Gates at lunch with the FT

Saturday, October 30th, 2010

Bill Gates is a wealthy man with famously modest tastes. Lunch is chowder and a cheeseburger, with fries and Diet Coke.

Bill Gates would still be the richest man in the world, if he didn’t keep giving his money away. Now, after donating $28bn to the Bill & Melinda Gates Foundation – which funds health, development and educational causes – he is down to his last $54bn. ….

The passion for science and technology that drove Microsoft forward is now being channelled into the search for medical advances. ….

But Gates is also worried about the environment, so I ask him if the rapid industrialisation of China is a recipe for environmental disaster. Again, his impulse is to look to technology for a solution: “Short of going to war over this issue, the best way would be to find innovative forms of energy generation”. He is excited by solar and nuclear energy, and mocks those who complain about rising Chinese energy use – “I mean, these Chinese are actually using as much energy per capita as the average in the world today, how dare they! How did that happen? The US uses four times the average and the Brits double. But now these Chinese are trying to use the average.” ….

I drink up my coffee and ask for the bill. As I produce my credit card, Gates looks slightly amused. “You sure you want to pay for this?” he says. “I got money.”

I don’t doubt it. But the rules are that the FT pays for lunch.

Gideon Rachman, “Lunch with the FT: Bill Gates”, Financial Times, 30 October 2010.

This is a relaxed and interesting interview. From it I learned that Gates’ 84-year old father, Bill senior, “is also an energetic philanthropist, and is currently campaigning for higher taxes on the rich in Washington State”.

Lomborg on climate change

Friday, September 10th, 2010

Climate change skeptic Bjørn Lomborg writes that reports of a major shift in his thinking are premature.

There is no longer any mainstream disagreement about the reality of global warming. The crucial questions concern the economics of our response. But this debate can be just as heated. Ever since I published The Skeptical Environmentalist in 2001, I have always acknowledged that man-made global warming is real. Yet activists have repeatedly labeled me a “climate-change denier.” This is not because I have ever suggested that the basic science of global warming is wrong. Rather, it reflects anger and frustration over my insistence on pointing out that drastic carbon cuts make no sense. ….

The Copenhagen Consensus Center – a think tank where I serve as director – recently asked a large group of top climate economists to explore the costs and benefits of different responses to global warming. At the same time, we convened a second, equally stellar group of economists, including three Nobel laureates, to examine all of the research and rank the proposals in order of desirability. ….

The publication of Smart Solutions to Climate Change [Cambridge University Press] has generated considerable interest, including some from activists who believe that my enthusiastic support of its proposals represents a major shift in my thinking. In fact, I have advocated R&D spending for years. What is new – and exciting – is that with the publication of this research, we may finally be starting a constructive discussion about how we really can respond intelligently to this challenge.

Bjørn Lomborg, “Smarter Thinking on Climate Change”, Project Syndicate, 10 September 2010.

Bjørn Lomborg (1965-) is author of The Skeptical Environmentalist (Cambridge University Press 2001). He is a political scientist (Ph.D. University of Copenhagen, 1994) who has lectured in statistics and is now Adjunct Professor at Copenhagen Business School.

natural resources and economic theory

Tuesday, July 13th, 2010

Martin Wolf questions whether it makes sense for theorists to merge natural resources with manufactured capital. This has been the norm ever since neo-classical economics triumphed over classical economics, about a century ago.

In moving from classical to neo-classical economics — the dominant academic school today — economists expunged land — or natural resources [incorporating them into capital]. ….

Yet it would seem to me that this way of thinking by economists is no longer sensible, if it ever was. Land must again be treated as separate from labour and capital.

First, resource scarcity is an increasingly pressing issue. It shows up in concerns over pollution (including global warming), in the discussion of “peak oil” and so forth. The idea that diminishing returns will become a more significant factor in the next century than in the past two seems to me to be compelling, now that modern economic growth has spread across the globe. So we need to return to economic models that incorporate resources, as a matter of course.

Second, in a globalised economy, taxing labour and capital will become increasingly difficult. That leaves land. The Australian government is right to want to extract the full rental value of its mineral resources for the benefit of the Australian people. Similarly, the people of the UK should wish to extract the rental value of London for their own use. The benefits of infrastructure investments that make London more productive would automatically be recouped if land rents were heavily taxed. Meanwhile, the taxation of capital and land [labour!] could be reduced.

Martin Wolf, “Why were resources expunged from neo-classical economics?”, Martin Wolf’s Exchange, 12 July 2010.

Despite the unfortunate typo (“land” instead of “labour”), Martin provides a splendid introduction to an important topic. (The extract above is only a small part of this introduction.)

Martin Wolf’s Exchange is open to all readers, but you must open a free account with FT.com to post a comment.

Krugman on climate change

Thursday, April 8th, 2010

Princeton economist Paul Krugman has written a concise survey of the economics of climate change for next Sunday’s New York Times Magazine. He has little sympathy for those who oppose taxes on carbon or limits on carbon emissions.

What you hear from conservative opponents of a climate-change policy … is that any attempt to limit emissions would be economically devastating. ….

This reaction — this extreme pessimism about the economy’s ability to live with cap and trade — is very much at odds with typical conservative rhetoric. After all, modern conservatives express a deep, almost mystical confidence in the effectiveness of market incentives — Ronald Reagan liked to talk about the “magic of the marketplace.” They believe that the capitalist system can deal with all kinds of limitations, that technology, say, can easily overcome any constraints on growth posed by limited reserves of oil or other natural resources. And yet now they submit that this same private sector is utterly incapable of coping with a limit on overall emissions, even though such a cap would, from the private sector’s point of view, operate very much like a limited supply of a resource, like land. Why don’t they believe that the dynamism of capitalism will spur it to find ways to make do in a world of reduced carbon emissions? Why do they think the marketplace loses its magic as soon as market incentives are invoked in favor of conservation?

Clearly, conservatives abandon all faith in the ability of markets to cope with climate-change policy because they don’t want government intervention. Their stated pessimism about the cost of climate policy is essentially a political ploy rather than a reasoned economic judgment.

Paul Krugman, “Building a Green Economy”, New York Times Sunday Magazine, 11 April 2010.

the Copenhagen accord

Monday, December 21st, 2009

The Financial Times today published a thorough if depressing description of the final hours of the Copenhagen conference.

It was an extraordinary sight: the leaders of more than 20 countries, including US president Barack Obama and the heads of most of the world’s other biggest economies, herded with an adviser or two each into a small room on Friday morning, poring over a short piece of prose with red pens. ….

What emerged late on Friday night, after hours of hard bargaining, including a showdown between Mr Obama and the leaders of China and the other big developing economies, was a document to be known as the Copenhagen accord . ….

By Saturday morning Su Wei, China’s chief negotiator, was distancing his country from the deal. “This is not an agreed accord, it is not an agreed document, it is not formally endorsed or adopted,” he said. “It is prepared or discussed by a group of people who have been specially invited.” His point was that the accord was not a formal UN decision but a voluntary agreement. He went on to suggest countries that sign up might have reservations, and might resign from it at any point. ….

[The accord] can easily be sidelined, an impression reinforced by China’s words. That leaves the UN with a further six months of tough and possibly hopeless negotiations to win acceptance, to be followed by the nearly impossible task of turning any such acceptance into a treaty. It also leaves the world without a global framework to tackle climate change.

It is these conclusions, after two weeks of unprecedented scenes, that have led some to question whether the UN, with processes vulnerable to delays, grandstanding and blackmail by special interests, is the forum in which to reach a treaty. There is talk from developed country officials of pressing ahead with a much smaller group of the leading economies, such as the Group of 20, responsible for the majority of global emissions – a “coalition of the willing” for the climate.

Fiona Harvey, Ed Crooks and Andrew Ward, “Copenhagen: A discordant accord”, Financial Times, 21 December 2009.

The initial stumbling block for consensus was not China, but four countries –Venezuela, Bolivia, Cuba and Nicaragua– “implacably opposed to the accord”.

trees and forests

Sunday, December 20th, 2009

Zoologist Bernd Heinrich  today focuses on biofuels, but his words apply equally to Joseph Heath’s call for “a simple, cogent line of reasoning that defends the practice [of paper recycling] against the ‘economic’ objection”.

Trees are often called a “carbon sink” — implying that they will sop up carbon from the atmosphere for all eternity. This is not true: the carbon they take up when they are alive is released after they die, whether from natural causes or by the hand of man. The only true solution to achieving global “carbon balance” is to leave the fossil carbon where it is — underground.

[snip]

[The Kyoto Protocol of 1997 does not provide] carbon-reduction credits for saving existing forests. Since planting new trees does get one credits, Kyoto actually created a rationale for clear-cutting old growth.

This is horrifying. The world’s forests are a key to our survival, and that of millions of other species. Not only are they critical to providing us with building material, paper, food, recreation and oxygen, they also ground us spiritually and connect us to our primal past. Never before in earth’s history have our forests been under such attack. And the global-warming folks at Copenhagen seem oblivious, buying into the corporate view of forests as an exploitable resource.

Bernd Heinrich, “Clear-Cutting the Truth About Trees”, New York Times, 20 December 2009.

Ewald Rametsteiner’s comments on my 20 August 2009 recycling post make more sense to me now that I have read this column.

Professor Heinrich lives in a 300-acre (120 hectare) Vermont forest. He is author of numerous books, including The Trees in My Forest (Harper, 1997) and Summer World: A Season of Bounty (Ecco, 2009).

Clive Crook on Climategate

Monday, December 14th, 2009

As one Climategate e-mailer noted, we do not understand why global warming has paused lately: the models cannot account for it. But this is not for public consumption. …. Just keep saying “flat-earthers” ….

Once scientists are engaged as advocates, science is in trouble. Like intelligence agencies fitting the facts to the policy, they are no longer to be trusted. The IPCC may be serving a righteous cause, but it is not the honest broker this process needs. It has made itself a political agency – at times, a propaganda unit. All this, the public can see.

For the sake of their own credibility, scientists should maintain a cautious distance from politics, and those who take up politics should not expect the deference to disinterested scholars they would otherwise deserve.

Clive Crook, “Trust the public on climate change”, Financial Times, 14 December 2009.

In other news, Paul Samuelson, a giant of 20th century economics, has died at age 94.