Showing posts with label climate change. Show all posts
Showing posts with label climate change. Show all posts
Wednesday, February 6, 2008
Six Degrees Could Change the World
I just saw an advertisement on BRAVO channel for a television special called "Six Degrees Could Change the World." Could? Goodness, a six degree rise or fall in global temperature WOULD change the world...
Saturday, December 15, 2007
John Tierney on Global Warming and Bali Conference

Contrarians v. Bali
By John Tierney
We always need contrarians to challenge orthrodoxy, so it’s good to see a few scientists raising questions about the established wisdom at the Bali conference on climate. But I’m such a contrarian myself that I have to quibble with them.
Tuesday, November 27, 2007
Mass Extinctions and Climate Changes of the Past
Roughly 251 million years ago, an estimated 70 percent of land plants and animals died, along with 84 percent of ocean organisms—an event known as the end Permian extinction. The cause is unknown but it is known that this period was also an extremely warm one. A new analysis of the temperature and fossil records over the past 520 million years reveals that the end of the Permian is not alone in this association: global warming is consistently associated with planetwide die-offs.
"There have been three major greenhouse phases in the time period we analyzed and the peaks in temperature of each coincide with mass extinctions," says ecologist Peter Mayhew of the University of York in England, who led the research examining the fossil and temperature records. "The fossil record and temperature data sets already existed but nobody had looked at the relationships between them."
Friday, November 23, 2007
Claim that Al Gore is a Climate Change Alarmist

Original Post Written By: Joseph Bast
Published In: Heartland Perspective
Publication Date: November 21, 2007
Publisher: The Heartland Institute
...Gore issued no apologies or corrections when prominent scientists pointed out errors in his film, “An Inconvenient Truth,” and book by the same title. The Internet is cluttered with rebuttals from authoritative sources, but nary a word of rebuttal or concession from Gore or evidence that he’s changed his stock presentations to take the facts into account.
The British High Court recently found Gore’s film contained at least nine errors and exaggerations so egregious they contradict the United Nations’ claims on the subject (no mean feat, since the UN anchors the alarmist corner of the global scientific debate). And those errors weren’t trivial. They were exactly the allegations Gore makes that turn global warming from an obscure scientific issue into a potential global crisis: that it is man-made, will cause flooding, is killing wildlife, and so on.
If Gore weren’t in it just for the money, he surely acted is if he were. And now his decision to join a venture capital firm to explicitly profit, enormously, from public concern and public policies that he helped create seems to prove it.
Gore’s cashing in on alarmism is ironic, because he claims repeatedly that anyone who disagrees with him has sold out to oil companies. If funding is a source of bias or makes a source unreliable, then Gore must plainly be the most biased and unreliable voice in the global warming debate.
Labels:
Al Gore,
climate change,
global warming sceptics,
Joseph Bast
Global Warming or Paranoia: Henry Payne
Global warming or paranoia?
by Henry Payne
Posted on planetgore.nationalreview.com
10/30/07
“One should never extrapolate about climate change from any single weather event or season,” writes New York Times columnist Thomas Friedman this Sunday before devoting his entire column to doing exactly that.
The California wildfires, Hurricane Katrina, Georgia’s drought, and a balmy October in DC – Friedman sees the hand of global warming everywhere.
Friedman is not only one of the best-known journalists on the planet – a Times columnist, Discovery Channel reporter, frequent NBC news guest – he is also a reflection of current green thinking in the mainstream media.
Once known for his thorough foreign affairs reporting, Friedman has become a zealous convert to the green religion and now writes on little else. This Sunday’s column was typically hysterical.
The missive was inspired by Friedman’s flight into Los Angeles (gulping 5 gallons of jet fuel per mile from his 11,499 sq. ft. home outside Washington, DC). Viewing the smoke from the wildfires, Friedman panicked: “I’ve never seen that before.”
If Friedman - like a good reporter should - had then sourced a forestry expert like the University of Maryland’s Robert Nelson he would have learned that, in fact, “historically, fires in these ecosystems burned through an area every 35-100 years, part of a normal ecological cycle – so-called ‘crown fires.’” (The Wall Street Journal, Monday)
But instead, Friedman consults lefty-friend and alternative energy expert Nate Lewis of the California Institute of Technology, who stokes Friedman’s fear.
“Did we do that? . . . Did we make it hot or did she (Mother Nature) make it hot? Did we make that drought or did she make that drought? Is man's cumulative impact on the climate now as responsible for the weather as Mother Nature herself?” Friedman hyperventilates.
''That is the question Katrina really introduced for the first time,” says Lewis, “the sense that soon, if not already, what we used to call acts of God are really acts of man.”
Actually, what Friedman and Lewis are experiencing isn’t climate change at all. It’s called paranoia.
Unravelling the Sceptics: Richard Black
Monday, 12 November 2007, 11:49 GMT
Unravelling the sceptics
By Richard Black
Environment correspondent, BBC News website
Unravelling the sceptics
By Richard Black
Environment correspondent, BBC News website
What do "climate sceptics" believe?
You might think that you know the answer, having heard, seen and read numerous counter-blasts aimed at the Intergovernmental Panel on Climate Change (IPCC) over the course of this year, as the three components of its landmark climate assessment were published.
Despite having reported on climate change for more than a decade, I realised at the beginning of the year that I was not entirely sure.
On a sceptic's blog I would read "global warming isn't happening". Then I would read an op-ed saying "warming is happening but it's entirely natural". Later, someone would tell me "it is happening, it is caused by greenhouse gases, but the effect is so small it won't matter".
Either there was a genuine divergence in the views of the sceptical science community, I concluded, or their analyses were somehow getting scrambled in transmission through blogs, newsletters, and the mainstream media.
I hope it will scotch the view that sceptical scientists generally believe the Earth's surface is not getting warmer
What sceptics believe is an important question, because their voices are heard in governments, editors' offices, boardrooms, and - most importantly - the street.
Their arguments sway the political approaches of some important countries, notably the US, which in turn influence the global discussions on whether to do anything about rising CO2 levels.
So I decided I had better try to find out.
The best approach seemed to be the simplest - just ask them. But first I had to define who I meant by "them".
Rather than choosing a group of people myself, I decided to use a group which had already been compiled by sceptics' organisations.
In April 2006, a group of 61 self-styled "accredited experts in climate and related scientific disciplines" wrote an open letter to Canada's newly elected prime minister, Stephen Harper, asking his government to initiate hearings into the scientific foundations of the nation's climate change plan.
The letter, complete with a list of signatories, was published in Canada's Financial Post newspaper.
Many, though not all, of the signatories were indeed scientists active in fields relating to climate science. And the group was large enough to suggest I might receive a workable number of replies.
So I compiled a questionnaire about their views on climate change science, with a dose of politics thrown in, and mailed it out.
I cannot guarantee that all 61 received it; I was unable to obtain contact details for one person, and was less than certain that I had correct details for three of the others.
On the other hand, I was fairly sure that the questionnaire would be spread through the blogosphere and - what should we call it? - the emailosphere? - which turned out to be so.
I went into this exercise not completely knowing what to expect; I guessed I would receive a wide variety of responses, and I was right.
Fourteen of the group filled in the questionnaire, in varying degrees of detail; another 11 replied without filling it in.
Of these, some sent links to articles explaining their position. Some replied with academic papers, for which I am grateful, especially to Doug Hoyt who mailed a number of references that I had not previously seen.
Some said this was a worthwhile exercise. Some, in circulated emails, said the opposite, in terms which were sometimes so frank that others of the group apologised on their behalf.
So to the results. Ten out of the 14 agreed that the Earth's surface temperature had risen over the last 50 years; three said it had not, with one equivocal response.
Nine agreed that atmospheric levels of greenhouse gases such as carbon dioxide, methane and nitrous oxide had risen over the last century, with two saying decidedly that levels had not risen. Eight said that human factors were principally driving the rise.
Twelve of the fourteen agreed that in principle, rising greenhouse gas concentrations should increase temperatures.
But eight cited the Sun as the principal factor behind the observed temperature increase.
And nine said the "urban heat island" effect - where progressive urbanisation around weather stations has increased the amount of heat generated locally - had affected the record of historical temperatures.
Eleven believed rising greenhouse gas concentrations would not result in "dangerous" climate change, and 12 said it would be unwise for the global community to restrain production of carbon dioxide and the other relevant gases, with several suggesting that such restraint would bring economic disruption.
One of my more gracious respondents, Arthur Rorsch, suggested that rising CO2 might help "green" the world, with increases in food supply.
There was general disdain for the Kyoto Protocol, with respondents split roughly equally between saying it was the wrong approach to an important issue, and a meaningless exercise because there was no point in trying to curb emissions.
There was general agreement, too, that computer models which try to project the climate of the future are unreliable. Several respondents said the climate system was inherently unpredictable and therefore impossible to model in a computer.
The other questions produced sets of responses which I could not boil down into anything approaching a consensus view.
I do not think that anyone would take this exercise as a comprehensive assessment of the views of climate sceptics, which is probably an impossible task.
They are a disparate community, and if you put any two together they would surely disagree on some aspect of the science - just as would any two researchers you picked out from any discipline.
But I hope it provides a snapshot of where the scientific disagreements that sceptics have with the IPCC begin and end - for one thing, scotching the view (prevalent in my in-box) that sceptical scientists generally believe the Earth's surface is not really getting warmer.
The IPCC and many of the world's climate scientists would, of course, profoundly disagree with the conclusions evidenced by this small group, and I have linked to some articles which detail some of the science behind their disagreement.
This exercise would not be complete without discussing some of the non-scientific comments and responses to my mailout, which represent a window into the suspicion, indignation and politicisation surrounding climate science today.
That, though, is for later in the week.
Predicting Climate Change with Computer Models
Just when everyone was getting sick of explaining that climate models are producing projections not predictions per se, it seems that some of them are indeed producing predictions.
Sunday, November 4, 2007
Carbon Dioxide and the Ocean Sink. David B. Benson
In addition to the changing ocean sink, drought and heat wave conditions may change the uptake of carbon on land. The infamously hot summer of 2003 in Europe for example cut the rate of photosynthesis by 50%, dumping as much carbon into the air as had been taken up by that same area for the four previous years [Ciais et al., 2005].
The warming at the end of the last ice age was prompted by changes in Earth's orbit around the sun, but it was greatly amplified by the rising CO2 concentration in the atmosphere. The orbits pushed on ice sheets, which pushed on climate. The climate changes triggered a strong positive carbon cycle feedback which is, yes, still poorly understood.
Now industrial activity is pushing on atmospheric CO2 directly. The question is when and how strongly the carbon cycle will push back.
Labels:
carbon dioxide,
climate change,
Global warming,
ocean sink
Saturday, November 3, 2007
TigerHawk On Climate Change and the Mild Hurricane Season
This year has had the mildest hurricane season in thirty years. Of course, there are no portentious headlines or news magazine cover stories asking whether this is evidence that climate change is a crock, even though climate change was -- to activists and activist scientists, at least -- the putative cause of the tough hurricane season two years ago. If the news media were even remotely honest, it would cross-examine the people who claimed that Katrina was caused by global warming and ask them to explain this year's calm in the same context.
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