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sexta-feira, 12 de março de 2010

Unstoppable Global Warming, Every 1,500 Years

Unstoppable Global Warming,
Every 1,500 Years

Rowman & Littlefield, 2007


The basic questions of the current climate change debate are sufficiently known and well structured:
  1. Do we live in an era of a statistically significant, nonaccidental and noncyclical climate change?
  2. If so, is it dominantly man-made?
  3. If so, should such a moderate temperature increase bother us more than many other pressing problems we face and should it receive our extraordinary attention?
  4. If we want to change the climate, can it be done? Are current attempts to do so the best allocation of our scare resources?

My answer to all these questions is NO, but with a difference in emphasis. I don't aspire to measure the global temperature, nor to estimate the importance of factors which make it. This is not the area of my comparative advantages. But to argue, as it's done by many contemporary environmentalists, that these questions have already been answered with a consensual "yes" and that there is an unchallenged scientific consensus about this is unjustified. It is also morally and intellectually deceptive.

Vaclav Klaus, President of the Czech Republic, Wall Street Journal, 30 May 2008


Editorial Note, 2009:

It now may have become reasonable to consider the proprosition that the theory of anthropogenic global warming is no longer a scientific theory. That is because, for a theory to be part of science, it must be possible for it to be falsified by observational evidence. It now looks like the theory of anthropogenic global warming, for its adherents, cannot be falsified.

It is not just that falsifying evidence is dismissed or explained away, something that often happens with scientific theories; but when any scientists produce or cite such evidence, they are smeared with personal attacks and attempts are made to discredit their bona fides as scientists and damage their professional standing. When I noted to a correspondent that Albert Einstein was never personally attacked or his seriousness questioned just because of his skepticism over the peculiarities of quantum mechanics, the response was of the form "this is different." How is it different? Well, the theory of anthropogenic global warming has become a political ideology, a quasi-religious crusade, where heresy cannot be tolerated and skeptics or "deniers" are bundled into the same category as neo-Nazi Holocaust deniers. This in itself serves to discredit the rhetoric and the case, if not the science, of the global warming alarmists.

If that were not enough, now we have "Climategate." E-mail correspondence from the Climate Research Unit (CRU) of the University of East Anglia was recently leaked or hacked. The spectacle revealed in this material was not the practice of science, but the practice of politics. To any disinterested oberver, it is an ugly business, with implications of destroyed data, stonewalling on Freedom of Information Act disclosures, and attempts to suppress the publication of research and/or to discredit skeptical scientists. We already knew they were acting this way, but now we get it in their own words.

Published in 2009, but before the Climategate disclosures, is a fine brief book by Ralph B. Alexander, Global Warming False Alarm, the Bad Science Behind the United Nations' Assertion that Man-Made CO2 Causes Global Warming [Canterbury Publishing]. With a Ph.D. in physics, Alexander maintains a sharp focus on the scientific issues. The political issues are noted but not explored to any extent, while the science discussions stick to the essentials, without mind-numbing and irrelevant elaboration. He is concerned, however, about the integrity of science; and the alarmists come in for extended criticism for their practices that diverge from the proper and even the honest. It is a timely and satisfying treatment.


Editorial Note, 2008:

Singer and Avery's book, which I review below, has just come out in a new 2008 edition, "updated and expanded," as the subtitle says. It is also extensively rewritten and reorganized, to its great material improvement. I have also learned in the meantime something of the place of Fred Singer in the history of the global warming debate.

The original inspiration for Al Gore's involvement with the global warming issue was one of his professors at Harvard, Roger Revelle. In 1957 Revelle had published data showing increasing carbon dioxide in the atmosphere. In 1965 he helped attribute this increase to human burning of fossil fuels, and in 1982 he predicted that global warming could result from this increase. This made him "the father of the greenhouse effect." However, Revelle was not an alarmist and tended to recommend caution. In 1991, he coauthored an article with Fred Singer, saying, among other things, "Drastic, precipitous, and especially, unilateral steps to delay the putative greenhouse impacts can cost jobs and prosperity and increase the human costs of global poverty, without being effective." This was not what Al Gore and his friends wanted to hear. In the 1992 Presidential campaign, claims were floated that Revelle had become senile before his death (of a heart attack, later in 1991). Singer was publicly accused by Justin Lancaster, who was a science advisor to Gore, of taking advantage of Revelle's mental incapacity and putting his name on the article without his consent. Singer sued. Lancaster settled, with a public retraction (which he has subsequently tried to take back, though all the details and evidence of the case are on the public record).

I learned of this ugly footnote to Gore's moral environmental crusade from The Deniers, The world-renowned scientists who stood up against global warming hysteria, political persecution, and fraud* (*And those who are too fearful to do so), by Lawrence Solomon [Richard Vigilante Books, 2008]. Solomon is a Canadian environmentalist who got interested and began writing newspaper articles about global warming "deniers," curious if the claims of Gore et al. were true that such people were marginal crackpots, unqualified, or tools of Big Oil. It didn't look like any of these charges were true; and Solomon became concerned that Gore's "scientific consensus" on climate was fraudulent. Of course, after such a discovery, it is unlikely that Solomon (like Bjorn Lomborg) would any longer be described as an "environmentalist" by the community of politically active environmentalists. Such heresy in itself discredits one's environmental bona fides.

But Canadians have done yeoman work in this area (perhaps because they wouldn't mind a bit of warming up there). Solomon's own first case features the Canadians Stephen McIntyre and Ross McKitrick. They discredited the infamous "hockey stick" graph of temperatures created by Michael Mann, which showed that 1998 had been the hottest year of the millennium, after a few years of alarming and unprecedented temperature increases. It seems that Mann had, intentionally or unintentionally, misused his statistical methods. His graph could have been generated with noise. McIntyre now has his own website, Climate Audit, and McKitrick has his own book, Taken By Storm, The Troubled Science, Policy, and Politics of Global Warming [with Christopher Essex, Key Porter Books Limited, Toronto, 2002, 2007]. This is one of the most impressive examinations ever of both the science and politics of global warming. Meanwhile, Bjorn Lomborg has his own relevant book, Cool It, The Skeptical Environmentalist's Guide to Global Warming [Knopf, 2008]. Of course, being a "Skeptic" on climate is now becoming a Thought Crime, and we will all end up at Al Gore's version of the Nuremberg Trials.


In the two years [2007] since the publication of Michael Crichton's State of Fear [2005], reviewed below, it has received little public notice and the drumbeat of propaganda about global warming not only continued but increased. Al Gore turned his PowerPoint presentation on the issue into a movie, An Inconvenient Truth [2006], which did reasonably well at the box office. U.S. Senators Jay Rockefeller and Olympia Snowe have written an open letter to Exxon-Mobil threatening some kind of action because the oil company has been funding some anti-warming research at a think tank. They apparently think that free speech has now been suspended and that denying global warming should have the same legal prohibition as Holocaust denial in France. Joseph Kennedy II has called global warming skeptics "bastards" -- something I have never noticed anyone calling Albert Einstein because of his skepticism over quantum mechanics. They also seem to think that the source of research funding always determines the results that are to be expected -- a principle that also discredits, of course, research funded by the federal government, which uniformly serves the interests of the federal government in implying that it, including Jay Rockefeller and Olympia Snowe, should have more power. Unfortunately for Al Gore, the convenient nature of his truth, which is for unlimited government and command economics, meaning money and power for him and his friends, emerged in the 2006 campaign for Proposition 87 in California. This was to tax oil companies to fund research into "alternative energy." Gore was to endure two levels of humiliation in the campaign: (1) that his own campaign ad for the proposition was pulled to run a series of ads featuring only Bill Clinton; and (2) that the proposition went down to decisive defeat. As it happened, a week after the election The Economist mentioned that about 10% of venture capital is already going into research on alternative fuels and energy. However, since there has been steady research in such things since the 70's, with limited results, how much more is to be expected any time soon is a good question.

With very little in the way of skeptical comment from the media bandwagon for Gore, et al., Unstoppable Global Warming, Every 1,500 Years, by S. Fred Singer and Dennis T. Avery finally is a bit of fresh air. They are not as skeptical as Crichton about warming as such, but they go after the thesis that it has anything to do with human activities and is something that we should, or can, do something about. One aspect of their approach involves the natural rhythms of warming and cooling in Earth's history. Another is the role of carbon dioxide in relation to a greenhouse effect of warming. With both, some eye opening information comes from an article published by the Geological Society of America in the GSA Today of July 2003 [Vol.13, No.7], "Celestial Driver of Phanerozoic Climate?" by Nir J. Shaviv, of Hebrew University, and Ján Veizer of the University of Ottawa and the Ruhr Universität. The whole article is available in text or pdf format on line.

A key bit of data from Veizer and Shaviv's article I have added to the following chart, whose original form, showing the transgressions and regressions of the oceans, can be examined at "The Pulse of the Earth" webpage. The full chart in "Celestial Driver of Phanerozoic Climate?" can be seen in a footnote, along with some other climate history information. Here we can see North America, in brown and orange, standing dry during the regressions, and the ocean, in blue, lapping over the Transcontinental Arch during the transgressions. What I have added, also in blue, is an indication of when the earth has had polar caps. This is shown when blue bars extend at each end of the chart -- the "Icehouse" conditions for the Earth. In Phanerozoic time, i.e. geological history since the beginning of the Cambrian, something under the last 600 millions years, there have been four "Icehouses." In the Paleozoic Era, from the Cambrian to the Permian, this involved glaciation. Veizer and Shaviv note the presence of "ice rafted debris" and "glacial deposits" in the icehouse periods. During the Mesozoic, the time of the dinosaurs, from the Triassic to the Cretaceous, the icehouse is indicated with a different tint of blue because, as Veizer and Shaviv say, "true polar ice caps have not been documented for this time interval." There is some "ice rafted debris" but no evidence of glaciation. Finally, we are in an icehouse ourselves, which has persisted most of the Cenozoic Era, with glaciation since the Pleistocene and icecaps and many glaciers persisting. I have added a fifth icehouse before the Cambrian because this is now a popular theory about why life only became abundant and varied in the "Cambrian Revolution" -- before then we had a "snowball Earth," with all the oceans frozen and life limited by the darkness of unfrozen, subsurface water. Given the rhythm of the icehouses, it is reasonable that there should be a Precambrian episode anyway.

The temperature of the Earth over geological time follows the succession of icehouse and "greenhouses," i.e. the warmer intermediate periods. The highest temperatures of all were after the end of the Permian icehouse. This produces a cycle of about 135 million years. Veizer, a geologist, did not know what periodic event, if any, could account for this cycle. There have been four icehouses in Phanerozoic time and, for instance, six transgressions. The Tippecanoe and Absaroka transgressions center nicely in icehouses, but we do not otherwise get a match. The Zuñi transgression neatly straddles the Jurassic-Cretaceous icehouse and the following greenhouse. Then Veizer discovered that Shaviv, an astrophysicist, did know what could match the cycles. That was when the earth, in its orbit around the Milky Way Galaxy, passes through spiral arms of the galaxy -- right now we are in the Orion Arm of the Galaxy (home of M42, the Great Orion Nebula). Their article is mainly about the effect this could have on weather. It turns out that while in a spiral arm, the Earth receives more in the way of radiation from cosmic rays. This ionizes atoms in the air, which provide better nuclei for cloud formation. The icehouses are thus characterized by greater cloud cover, which increases the Earth's albedo and reflects more sunlight back into space. The Earth cools. A purely geophysical process would seem to be responsible for the transgressions, and the warming effect we might expect from water covering the continents is apparently offset by the cooling effect. The Jurassic-Cretaceous icehouse appears to be the exception, where the arrangement of the contingents, with open ocean at the poles, prevented glaciation and the formation, as Veizer and Shaviv say, of "true polar ice caps."

What the record of temperature, icehouses, and transgressions really doesn't match up with is the history of carbon dioxide concentration in the atmosphere. Veizer and Shaviv cite three different studies on CO2 levels. The studies do not agree very well, but they do agree on two things: (1) the rise and fall of CO2 is unrelated to the rise and fall of temperature, and (2) the concentration of CO2 right now is at a historic low. I had seen this mentioned a year or so ago on just one television documentary, on something like the Science Channel, but they had not given a reference and nothing else I have seen has mentioned anything of the sort. One study (the GEOCARB III, by Berner and Kothavala, 2001) actually shows very high CO2 levels in a couple of the coldest periods, during the Ordovician and near the Jurassic Cretaceous boundary. The effect of this, of course, is to show that CO2 levels don't have very much to do with the temperature of the Earth. This is bad news for global warming enthusiasts, who want a direct link between warming and the evils of automobiles, oil companies, and American consumerism.

Singer and Avery, of course, have a great deal more in their book than an examination of Veizer and Shaviv's information. I lead with the latter because it is so devastating, and because public discussions of global warming still usually fail to note that the Earth has been much warmer in the past than now, and that for much of Phanerozoic time the Earth had no glaciers or polar caps. The impression the public would get is that any warming will kill coral reefs and then the whole planet, so we better give up modern energy production right away. The title of Unstoppable Global Warming, Every 1,500 Years refers to cycles of warming and cooling on a much smaller scale than Phanerozoic time, indeed, just since the end of the last Glacial, about 10,000 years ago. For several thousand years after that, the Earth was relatively much warmer than it is now -- the Climatic Optimum, which Singer and Avery, unlike Al Gore, have no reason not to mention. Since then, the cycles of climate change are reasonably evident for about the last 2000 years. Thus, we go from the Roman Warming of the early years AD, to the Dark Ages Cooling, to the Mediaeval Warming -- the Little Climatic Optimum -- to the Little Ice Age, and finally to the warming trend that has continued since around 1850. Recent periods of cooling seem to involve droughts in key places, and the overall cooling since the Climatic Optimum has meant gradual desiccation, for instance, of the Sahara. The Dark Ages Cooling can have added to the problems of the Roman Empire and may even have knocked out Mayan Civilization, which was entirely dependant on rainfall for water. Similarly, the theory is that an earlier cooling led to a drought in Egypt, so that the evils of the First Intermediate Period are linked to climate -- the great Faiyum lake, later beloved of XII Dynasty Kings, appears to have dried up during this period.

Although they don't seem to discuss it in the book, the "1,500 years" in Singer and Avery's title may refer to a climate cycle that has been discerned in Pleistocene data, the "Bond Cycle," of between 1100 and 1500 years. Their thesis is apparently that the Bond Cycle has simply continued into post-glacial times. What drove or drives the Bond Cycle is a good question. It may be a cycle of solar activity, or other things may be involved. All we know is that it is a periodicity event in the sedimentary record.

Things like the Climatic Optimum and the Little Ice Age used to be non-controversial, but since they are not helpful for global warming scare-mongering, there are cases examined by Singer and Avery where attempts have been made to explain them away or manipulate the data. The most infamous of these may have been the "Hockey Stick" graph of Michael Mann, which eliminated most of the variations in temperature for the last 1000 years and posited a steep and unprecedented rise (the hockey stick blade) in temperatures in the 20th century [pp.68-69]. Other attempts to explain away historic variations involve claiming that the Mediaeval Warming or the Little Ice Age only occurred in Europe or nearby and were not global phenomena. Singer and Avery go over all the evidence, from all over the world, against these revisionist efforts.

Singer and Avery nicely sum up the "strongest allies" of the theory of human-caused (anthropogenic) global warming:

  • "Computer models that cannot explain past temperature, let alone accurately forecast future ones, and whose funding depends on the public's fear of radical warming.
  • "Activists who oppose modern technology, abhor expanding human populations, and especially hate the low-cost energy that alleviates human poverty and misery. They say we must...renounce attractive lifestyles, give up high-yield farming, shorten millions of lives, and put more pressure on Third World forests for fuelwood.
  • "European politicians.
  • "Journalists looking for scary headlines.
  • "Various national and international bureaucracies and UN-appointed members and staff of the Intergovernment Panel on Climate Change." [p.198]

This list, of course, is short on science and evidence and long on politics, both that of activists with a moral axe to grind and that of politicians and bureaucrats whose rent-seeking interest is in their own power. Since the scare-mongering enthusiasts like to blame evils on the oil companies or the American consumer, targets they already seemed to dislike anyway, as part of the general agenda and ideology of the Left, they deserve at least as much in terms of ad hominem attacks as they dish out. But this is not a minor point. The public is constantly told that skepticism or counter-evidence against anthropogenic global-warming is simply part of disinformation from self-interested oil companies or related corporations, who are preventing us from using or developing the alternative energy sources that would Save the Earth and lead to "sustainable" growth. There are many who may sincerely believe this scenario, but with far too many activists it is a smoke-screen for an "agenda" (as they like to say) for something very different: for a virtuous eco-poverty (as in Cuba) and a government that will make the "hard choices" of forcing people into that poverty (as in Cuba). They may know that "alterative energy" is not available (or is nuclear, which is also objectionable) and that the oil companies are simply truthfully doing their job. It is the job, cheap energy, that they don't like. Capitalism, freedom, prosperity, and America are the enemy, as they have been for many years. While press has done its best to ignore Michael Crichton on this, and will certainly ignore Singer and Avery (and Veizer and Shaviv), we also see that when the public realizes what the real agenda and consequences of the business are, as with Proposition 87, the likes of Al Gore come out on the short end. Even better, the developing world, including India and China, have little patience for wealthy westerners (which is what the ecological activists generally are) telling them they should remain in poverty. China will probably have the largest economy in the world by 2020; and even without democracy, the Chinese government is looking forward to the power that this will give their country. If the United States should hobble its own economy with energy restrictions, so much the better. It is instructive on the way the press works these days that the stories about global warming often contain emphasis that sea levels and droughts will affect poor Third World countries the most, without mentioning that suggested restrictions on energy production condemn the very same countries to continued poverty. Fortunately, the countries themselves, mainly African, know what the most immediately threat to their welfare is, and it is wealthy and comfortable Western do-gooding eco-activists, not global warming.


Michael Crichton, State of Fear, HarperCollins, 2004

Dr. Christopher Landsea, from the Hurricane Research Division of the National Oceanographic and Atmospheric Administration's (NOAA) Atlantic Oceanographic and Meteorological Laboratory, has withdrawn from authorship of the Fourth Assessment Report of the United Nations' Intergovernmental Panel on Climate Change (IPCC)

Global-warming alarmists intimidate dissenting scientists into silence

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Unstoppable Global Warming, Note



The full chart in "Celestial Driver of Phanerozoic Climate?" can be seen at right. It is shrunk for this page, but a full sized version will popup by clicking on the chart. Similarly, a full sized version of the legend will popup with a click.

The most important features of this are (1) the dark black line on the lower part of the chart, which are the mean temperatures at 10/50 resolution, as explained in the legend, since the end of the Cambrian Period, and (2) the red, green, and blue lines at the top of the chart, which are different reconstructions (with spread of uncertainty for two of them) for concentrations of carbon dioxide in the atmosphere.


Figure 2--Long-term trends in 20-year
d18O ratios measured on the GISP2 Greenland ice core. A = Trend since start of Holocene, 10,000 b.p. Slope = -0.000024**. B = Trend since start of Christian era, 2000 b.p. Slope = -0.000196**. C = Trend since start of Little Ice Age, 700 b.p. Slope = -0.000067 NS. D = Trend since start of industrial revolution, 100 b.p. Slope = +0.003518 NS. Positive slope indicates rising temperatures. ** = highly significant (p=0.01), NS = not significant.
For the history of temperatures in more recent time, on a larger scale, we've got the chart at right, from John C. Davis and Geoffrey C. Bohling, referenced in Geological Perspectives of Global Climate Change by L.C. Gerhard, W.E. Harrison, and B.M. Hanson [American Association of Petroleum Geologists, 2001] -- the legend from Gerhard, Harrison and Hanson is included with the table. With the present at the left, the upper table shows temperatures during the last Glacial (the Younger Dryas) and then since the beginning of the Holocene Epoch. On average, temperatures have declined by a small but steady amoung. In the lower table we have an enlargement of the most recent part of the upper table, the last two thousand years. The Roman Warming, Dark Ages Cooling, and Mediaeval Warming are evident, with the Little Ice Age in a different color (looks like violet). Since the end of the Little Ice Age, temperatures have increased significantly, but had not yet peaked even as high as it was at one point in the Little Ice Age.

Return to Text


Michael Crichton,

State of Fear, a Novel

HarperCollins, 2004


Michael Crichton will probably be best known for his novel Jurassic Park [1990], which became a blockbuster movie, pioneering the use of digitally created characters. His novels The Andromeda Strain,Congo, and The Lost World also became movies. In all of these there has been an element of science fiction and science fact. With State of Fear we get just a little bit of science fiction, with mystery fiction, and a great deal of science fact, whose nature, however, is a matter of intense controversy and politicization. Indeed, the novel is as much about politics and political disputes mixed in with science as anything else. Thus, State of Fear is a most unusual novel in having footnotes and a bibliography, which the reader is warned are real and serious. At the end we also get an "Author's Message" and an appendix, "Why Politicizing Science Is Dangerous," which discusses historical cases of pseudo-scientific fads like eugenics and Lysenko's biology.

The political and scientific dispute in this case is over the theory and evidence for global warming. The general thrust of the novel we can gather from the circumstance that the story is about a conspiracy of eco-terrorists to generate several catastrophic events, which will include a large number of deaths, just to publicize an ecology conference on "abrupt climate change." In the course of it we also get a strong swipe at political activists in Hollywood. One such character, Ted Bradley, is said to have played the President in a long running television series. This would be a reference to Martin Sheen, a leftist activist who plays the President on The West Wing -- though the name and the personality of Ted Bradley both evoke Ted Baxter, the pompous and foolish news anchor on the old Mary Tyler Moore Show. Bradley ends up literally getting eaten by cannibals -- after heatedly affirming that cannibalism is a myth used to disparage Third World peoples. For harshness, this is in competition with the treatment of Hollywood activists in Team America, World Police (where they merely get their heads blown off or are consumed by flame). The eco-terrorists themselves are identified as the "Environmental Liberation Front," ELF, which is a very thinly disguised reference to the "Earth Liberation Front," also ELF, which has engaged in just the kinds of arson and vandalism initially described in the book. The real ELF, however, has so far avoided any loss of life in its acts (except for animals, ironically), while the ELF of the novel commits a murder within the first few pages and attempts many others thereafter.

As a story, State of Fear has some drawbacks. Although the investigation is in the hands of federal anti-terrorism agents, who have no difficulty getting the cooperation of local law enforcement, we never see more than two agents in on the operations, they move around by borrowing a corporate jet, and anti-terrorist strikes that reasonably would call for SWAT teams and military cooperation are carried out by just these two agents, with the help of a private millionaire, one of his lawyers, one of his staffers, and one of the agent's nieces. Failures and setbacks plague the operations, usually because the small team, with a majority of amateurs, are outnumbered, outgunned, and often outsmarted by the bad guys. Disaster is avoided mainly by good luck. This is ridiculous. Versions of such teams are common in stories where authorities don't believe in the bad guys, or are in league with them, and an oddball group of private individuals must save the day. In State of Fear, however, where the good guys are directed by federal agents, the oddball group approach doesn't make any sense. When the bad guys are driving around Arizona in large moving vans, plainly labeled, and the Arizona police are cooperating, it is incredible that the whole ELF team, with its equipment, could not have scooped up. Crichton really should have given all this a little more thought.

On the other hand, the story is just a framework on which to hang the scientific and political issues. This works rather better. The global warming debate involves several layers of questions. (1) Are average global temperatures rising? (2) Do human activities have anything to do with this? (3) Could such warming occur without any human involvement? (4) Does it matter? (5) Could such warming, if it is happening, be, on the whole, desirable? The short answers here are (1) perhaps, (2) perhaps, (3) yes, (4) perhaps not, and (5) possibly. In more detail:

  1. Crichton takes a pretty hard skeptical line about whether warming is occurring at all and gives a fair amount of detail about it in the book. Although anyone watching the news recently would be under the impression that glaciers are retreating everywhere, that the Antarctic icesheet is rapidly melting, that temperatures are rising everywhere, and that sea levels are rising rapidly and dangerously, all of these are flatly denied. The book begins with an Icelandic geologist battling his eco-activist sponsors. They want him to slant his data, or at least his interpretation, to support global warming, but his research happens to show that glaciers in Iceland are advancing, not retreating. The data for Antarctica is that, while parts of the continent are warming, the majority of it has actually become colder. All this is interesting and important, but it is also an empirical question. Political debate, novels, and philosophers are not going to settle whether the planet is generally warming up or not. What concerns Crichton most particularly are instances, as at the beginning of the book, where research results actually have been slanted and misstated, sometimes by bureaucrats without the knowledge of the scientists involved in the research. Since this has indeed happened, it gives the global issue an intrinsic political dimension that has nothing to do with science or, indeed, with climate.

  2. Human activities do generate carbon dioxide, and carbon dioxide is a greenhouse gas. If the planet is getting warmer, it is perfectly conceivable and possible that this contributes to it. The political dimension of global warming involves a factual judgment that this cannot be allowed to happen because the effects would be catastrophic, and a moral judgment that the only reason we are tempting fate and generating all this carbon dioxide is because we are greedy, thoughtless, and selfish -- especially in the United States -- and follow a capitalistic mode of production rather than a socialism that would keep us in virtuous poverty, like in Cuba. Well, Crichton doesn't state the latter part in quite those terms, but that is the ideology involved, and in the book Crichton touches on most of its elements.

  3. The simple truth is that whatever we do, the Earth, in time, will get warmer and, in time, will get cooler. It has been much warmer and much cooler at different points in geological history. Indeed, the Earth usually has been much warmer than it is now. Ice caps at the poles are probably very unusual in the history of the planet and probably didn't exist at all during the entire Mesozoic Period, when the dinosaurs lived. Some research suggests that carbon dioxide levels much, much higher than now went along with the long stretches, hundreds of millions of years, when the planet was cooler. In recent history, since the beginning of the Pleistocene Epoch, within the last two million years, the Earth has been unusually cool. Four times, glaciers have covered much of the northern hemisphere. Between the glaciations, inter-glacial periods have typically been rather warm. After the end of the last glaciation, the Earth was warmer than it is now. This was long called the "climatic optimum," a term now dropped just because it makes it sound like we would be better off with a warmer climate. One cannot argue that global warming would be bad if that were the case. Since the "climatic optimum," cooling has generally been the trend. Europe in the 13th century seems to have been warmer than it is now, and beginning in the 17th century there was the "Little Ice Age," which may have helped spark the French Revolution, thanks to crop failures. Temperatures have recovered since the beginning of the 19th century, and it looks like such warming has been the trend since. Whether or not this has recently been influenced by human activities, there is no doubt that something of the sort could well have been occurring anyway, and is bound to happen sooner or later.

    Why glaciation occurred in the distant Paleozoic and the recent Pleistocene is a matter of debate and conjecture (there is also theory that the entire planet was frozen just before the Cambrian Era). The shape and size of the Earth's orbit, the inclination of the Earth on its axis, and the sun's own cycles of energy output all may contribute. Most obviously, however, is the arrangement of the continents. In the Paleozoic, where evidence of glaciation is on the southern continents, the South Pole was covered and ringed with land. Land cools easily and prevents moderating ocean currents from approaching the pole. Today, a large continent covers the South Pole again, and the North Pole is almost entirely ringed by the northern continents, limiting ocean circulation. Large ice caps figure on northern and southern lands, and the North Pole itself is covered by sea ice. Over millions of years this arrangement of continents will be changed, and the Earth will again enter a period when open ocean is at the poles and ice caps don't exist.

    While a warmer Earth may indeed be something we might not desire to artificially produce, it is worth noting that the planet did just fine in its warmer periods and that there was nothing catastrophic or threatening to life about such climates. The idea that the Earth must be "saved" from warming, which would endanger life itself, is thus farcical.

  4. Whether any actual global warming would matter just depends. There used to be a lot more rain in the Sahara, which has steadily desiccated, as the Earth has cooled, for about 8000 years. A lot of poor countries would be better off with more of that rain. Certainly not everyone would benefit. During the Pleistocene, sea levels were both higher and lower than they are now. Lower levels meant more water in the ice caps; higher levels meant warmer periods. Higher levels now would doom New York and other coastal cities. This could and would happen eventually anyway, without human intervention. At the same time, most people fail to note that the entire cap of sea ice at the North Pole could melt without raising sea levels one inch. Anyone can conduct the experiment of putting an ice cube in a glass of water, noting the water level, and then seeing what happens when the ice melts. Nothing happens. For sea level to rise, huge areas of ice on land must melt. More than 90% of that means Antarctica, with Greenland coming in second. If the Antarctic and Greenland ice sheets simply are not shrinking, as Crichton says, then the debate is over.

  5. As already noted, until recently a warmer Earth was usually regarded as a good thing. Historically it meant more rain in places that rather need it, and a longer growing season in higher latitudes. No one much enjoyed the Little Ice Age (and now there are theories that the Egyptian Old Kingdom and the whole of Mayan civilization collapsed because of droughts associated with colder periods). The issue, however, is now confused with new and dire predictions, like more severe weather, more and stronger hurricanes, etc. Crichton touches on this, and the predictions largely seem to be speculation with very little, if any, empirical foundation. Although 2004 was a noteworthy year for having four hurricanes hit Florida, the number of hurricanes had actually declined in recent decades, and even an unusual year like 2004 simply returned things closer to the average 50 years ago. If global warming had been a steady process, it looks like it has largely produced fewer hurricanes, not more.

If the evidence is against global warming, or ambiguous, or irrelevant, why has it become such an issue? The answer seems to be a moral and political one. We are trashing the planet with human civilization, foolishly wasting "natural resources," and hoarding wealth in the advanced countries that should be shared with the underdeveloped ones. This approach seems to be equal parts moralistic asceticism, that the virtuous embrace poverty, and the remnants of "lumpen Marxism" and the kind of half-baked socialism that is the best that the Left can do these days. The asceticism goes down well with the "chattering classes" of the press, politics, and academia, though few members of these groups practice any kind of asceticism themselves -- a point well illustrated by Crichton (the maids drive the hybrids). The socialism still sounds good in the same circles, even though all its forms are now so incoherent and discredited that they can withstand neither a moment of critical reflection nor the slightest comparison with historical experience. Nothing "trashes" the planet like even a small asteroid, or a large volcano, and human activities are pinpricks in comparison. Wealth, on the other hand, comes from human activity, not piles of "resources." Poor countries are poor, not because they lack natural resources (often they have an abundance, far more than the second largest economy on Earth, Japan), but because they lack capital, especially human capital. Human capital, indeed, consists of the kinds of skills, habits, and striving that are always bitterly resented when only ethnic minorities possess them -- minorities like the Chinese in Southeast Asia, Indians in East Africa, or Jews in Eastern Europe. They are then damned, while robbed or expelled, with all the bogus principles used to belabor capitalism -- leaving behind, of course, continuing poverty. Human capital, indeed, can generate wealth while beginning with very little of other kinds of capital. A Japan that was all but flattened by bombing, including atomic bombing, in World War II, rebuilt itself and surpassed all its former foes (except one) and allies in not much more than thirty years.

Crichton's attitude seems to have changed a bit since Jurassic Park. There we had a cautionary tale of human arrogance, with gems like, "Discovery is always a rape of the natural world," pronounced by the prophet mathematician Ian Malcolm, whose understanding of Chaos Theory seems to boil down principally to a restatement of Murphy's Law. The moral of the approach seems to be that, as Nature cannot be controlled, modern science is a fraud, a mistake, a sin, or something of the sort. Since Malcolm himself, however, says that mathematics "is just an arbitrary game," it is not clear why this, as he asserts, describes reality more fully than any other "arbitrary game." Since he doesn't advocate giving up civilization and going back to the Pleistocene (though he does seem to say that human life was just as good 30,000 years ago as now), the upshot is that we are not told what we should do instead -- and the Malcolm of the book dies, unlike the Malcolm (Jeff Goldblum) of the movie. On the other hand, Malcolm also denies that the planet, or life in general, are in any kind of trouble from our activities. It is only ourselves, not the planet, that we endanger.

Although the popularity of Jurassic Park is probably due in great measure to the theme of human arrogance and "rape of the natural world" (with the irony that the embodiments of the sin, the revived dinosaurs, are as much the draw for the movie as they would have been for the fictional Jurassic Park), the Crichton of State of Fear seems to have taken the later insight, that the planet will do just fine, more to heart, to the cost of the former. At the same time, Malcolm was quite right that Nature cannot be controlled. The problem with that is just the ideology with which it is always coupled, i.e. that human beingscan and should be controlled. No one complains about the human treatment of nature without wanting to stop it, to leave Nature alone, apparently because Nature is better off without us. We see the affinity of militant ecology to the Left in the desire to suppress freedom and control people, or at least people's economic activities (though the forced abortions in China are also popular in some circles). The very idea that Nature can be "preserved" is refuted by Crichton with a fine example, how Yellowstone National Park was intended, through all its history, to be a preserve of natural life, but instead was changed repeatedly by the very measures expected to preserve it. Withdrawing humans from wilderness and then believing that Nature will there simply continue unchanged is itself a form of control, one as unlikely to work as expected as any other intervention. Militant ecology indeed assumes the very principle it uses to belabor human arrogance, that human life is different and distinct from Nature. Human arrogance, of course, supposes that human life is better than Nature, while militant ecology supposes that human life is worse than Nature.

The truth is that neither Nature nor human life can or should be controlled. Human cultural, intellectual, and scientific evolution simply continues the process by which evolution produces life in the first place -- human civilization embodies more of the forms of spontaneous order that are embodied in the structures of matter, the universe, and life. Despite the popularity of ecological ideas and the moralistic condemnations in books like Jurassic Park, it is also noteworthy that political measures with significant economic costs (at least obvious ones) are commonly losers in politics. A good example of that was the "BTU" (British Thermal Unit) tax that was proposed by the Clinton Administration when it assumed office in 1993. The idea behind such a tax was to make all forms of energy more expensive, which would discourage energy use and promote the development of "alternative" sources of cheap energy. This had in particular been a campaign theme of Bill Clinton's Vice President, Al Gore, who published an eco-doomsday book for the campaign (Earth in the Balance). With solid majorities in Congress, there was nothing to stand in the way of such a proposal by the Democratic Party. Nevertheless, the tax failed and was never revived (although other taxes were increased). Despite it being a constant theme of ecological complaint that gasoline in the United States is too cheap, and should be more like the $5 a gallon common in Europe, it does not escape notice that any serious rise in gasoline prices is greeted with howls of protest. The Democratic Party knew that it is better that such protests be directed at the oil companies and the market, rather than at a Democratic Congress.

A similar political dislocation occurred in 2004 with the movie The Day After Tomorrow. This was a heavy handed tale of ecological doom, based on the idea that Artic melting would lower the salinity of the North Atlantic, stop the Gulf Stream, and plunge Europe, at least (North America too, in the movie), into a new Ice Age. This is a real theory, and of some interest. Its catastrophism suffers from the difficulty that the Gulf Stream does not simply flow north and then sink (as heavy salt water) and return south at depth, but that the circulation on the surface is a clockwise pattern, driven by wind, all around the North Atlantic basin. Either way, the extrapolations in the movie are preposterous. What we see are several gigantic storms in the northern hemisphere that return the Pleistocene ice caps to their full size in the course of just a few days. Storms, however, require a lot of energy, and Arctic cold, however warmed from the past, cannot provide it. Hurricanes, or the moisture for a New England "Nor'easter" snowstorm, comes from the tropics. This impossible storm over North America then generates a huge storm surge that buries New York City in water. Unfortunately, storm surges are generated by storms at sea, which is where this storm isn't. The clincher, though, is that the giant storms draw down super cold air from the stratosphere into their centers, which flash freezes everything, including the water that is to reconstitute the Pleistocene glaciers. The producers, writers, or advisors to the movie, however, failed to recollect that storms form around low pressure centers and that in low pressure centers air is rising, not falling. High pressure, where air descends, commonly brings the coldest temperatures, with clear skies. A comparable problem occurs with the portrayal of an outbreak of tornadoes in Los Angeles. Now, small tornadoes have been spotted in the Los Angeles Basin, and waterspouts have been filmed off the coast, but outbreaks of tornadoes have rather more to do with geography than with anything else. Flat terrain between a dry continental north and the warm, humid Gulf of Mexico makes central North America the tornado capital of the world. Mountains, of whatever size, break up airflow and disrupt tornado formation. This is evident anywhere, but is particularly conspicuous in the genuinely mountainous environs of Los Angeles.

So it must be asked why the movie takes these liberties with the truth. First, it could simply be a traditional Hollywood "disaster" movie, where truth and science are suspended for purposes of entertainment. This is "poetic license." The movie succeeds on that basis and was very successful at the boxoffice. Second, however, the movie could be a dishonest bit of political propaganda. This is more what it looks like. The political dimension of the movie is obvious, first because it begins at an environmental conference, attended by the Vice President of the United States -- an obvious version of actual Vice President Dick Cheney. A nastier political edge runs through the film when we see that the Vice President is the one really in charge and that the President, a George Bush clone, is uninvolved and ineffectual. The President gets killed, and the Vice President, who has fled to the American Embassy in Mexico, finds eco-Religion, confessing his sins and undertaking to Save the Earth.

If the producers had reason to be encouraged by the performance of the movie for their political goals (like Michael Moore with his own dishonest "documentary" propaganda films), they cannot have been pleased with the political result, which was the reelection of George Bush. The movie as a political instrument thus failed badly, and a more astute propagandist (like Moore) might have told them that the war in Iraq, not the environment, would be the pivotal campaign issue -- though even that didn't quite do the trick. Perhaps it was a bad sign that The Passion of the Christ made more money in 2004 than The Day After Tomorrow and Fahrenheit 911 combined.

While State of Fear, like other Crichton books, would make a good or at least serviceable movie (we cannot say that Congo, for instance, was all that great), it remains to be seen whether it will appear as the counterpoint to The Day After Tomorrow. Indeed, we might see this as a test case of political bias in Hollywood, where political activists are pleased to deny political bias. The expository sections of the book are worked in quite nicely, and could survive to some extent in a movie, but there is also the fact that such things, however attenuated, are deadly for pace and plot. Previously the bane of science fiction, expository sections were brilliantly eliminated by George Lucas in Star Wars, in part because he realized that foreign movies he liked, like Japanese movies, worked even though the audience, lacking the cultural background, didn't always understand what was going on. So Lucas decided to treat science fiction as a kind of foreign language medium. This approach is not available for State of Fear, where the background is much of the point of the story. But if this problem could be successfully overcome in The Day After Tomorrow, it probably can be in State of Fear. The willingness of Hollywood money to back an enviro-skeptic film is what is in real doubt.



Imparable calentamiento global,
Cada 1.500 años

Rowman & Littlefield

Las preguntas básicas del actual debate sobre el cambio climático son suficientemente conocidas y bien estructurado:
¿Vivimos en una era de cambio climático estadísticamente significativo, no accidental, y no cíclico?
Si es así, ¿es predominantemente por el hombre?
Si es así, si ese aumento de la temperatura moderada nos molesta más de lo que muchos otros problemas apremiantes que enfrentamos y que deben recibir nuestra atención extraordinaria?
Si queremos cambiar el clima, se puede hacer esto? Son los actuales intentos de hacer lo que la mejor asignación de nuestros escasos recursos?
Mi respuesta a todas estas preguntas es NO, pero con una diferencia de énfasis. No aspiro a medir la temperatura del planeta, ni para estimar la importancia de los factores que lo hacen.Este no es el área de mis ventajas comparativas. Pero afirmar, como lo ha hecho por muchos ambientalistas contemporáneo, que estas cuestiones ya han sido contestadas con un consenso "sí" y que existe un consenso científico indiscutible de esto es injustificado. También es moral e intelectualmente engañosa.

Václav Klaus, Presidente de la República Checa, Wall Street Journal, 30 de mayo 2008

Nota Editorial, 2009:

Puede que ahora se han convertido en razones para que la proprosition que la teoría del calentamiento global antropogénico ya no es una teoría científica. Esto es así porque, para una teoría de ser parte de la ciencia, que debe ser posible para que pueda ser falsificada por la evidencia observacional. Ahora parece que la teoría del calentamiento global antropogénico, por sus adherentes, no pueden ser falsificados.

No se trata sólo de que la falsificación de pruebas es despedido o explicarse, algo que suele ocurrir con las teorías científicas, pero cuando los científicos producir o citar dichas pruebas, se ha manchado con ataques personales y se hacen intentos de desacreditar a su buena fe como los científicos y los daños su situación profesional. Cuando señalé a un corresponsal que Albert Einstein nunca fue atacado personalmente o en duda su seriedad sólo por su escepticismo sobre las peculiaridades de la mecánica cuántica, la respuesta fue de la forma "esto es diferente". ¿Cómo es diferente? Bueno, la teoría del calentamiento global antropogénico se ha convertido en una ideología política, un cuasi-cruzada religiosa, donde la herejía no puede ser tolerada y los escépticos o "negacionistas", se integran en la misma categoría que los neonazis que niegan el Holocausto. Esto en sí mismo sirve para desacreditar a la retórica y el caso, si no la ciencia, de los alarmistas del calentamiento global.

Si eso no fuera suficiente, ahora tenemos "Climategate". Correspondencia por correo electrónico de la Unidad de Investigación del Clima (CRU) de la Universidad de East Anglia, se ha filtrado recientemente o hackeados. El espectáculo se revela en este material no era la práctica de la ciencia, pero la práctica de la política. Para cualquier oberver desinteresada, es un asunto muy feo, con consecuencias de destrucción de datos, evasivas sobre la libertad de publicación de información sobre la Ley, y los intentos de suprimir la publicación de la investigación y / o para desacreditar a los científicos escépticos. Ya sabíamos que estaban actuando de esta manera, pero ahora lo hacemos en sus propias palabras.

Publicado en 2009, pero antes de las revelaciones Climategate, es un libro breve multa por Ralph B. Alexander, Calentamiento Global de falsas alarmas, la mala ciencia detrás de las Naciones Unidas aseveración de que Man-Made CO2 provoca calentamiento global [Canterbury Publishing]. Con un doctorado en la física, Alexander mantiene un claro enfoque en las cuestiones científicas. Las cuestiones políticas se observan, pero no explorado en alguna medida, mientras que las discusiones sobre ciencia atenerse a lo esencial, sin adormecer la mente de elaboración e irrelevante. Le preocupa, sin embargo, acerca de la integridad de la ciencia, y los alarmistas, objeto de críticas por su extendido las prácticas que se apartan de la correcta e incluso los honestos. Se trata de un tratamiento oportuno y satisfactorio.

Nota Editorial, 2008:

Singer y libro de Avery, que reseña a continuación, acaba de salir en una nueva edición de 2008, que fue actualizado y ampliado ", como dice el subtítulo. También es ampliamente reescrita y reorganizado, a su mejora gran material. También he aprendido algo en el ínterin del lugar de Fred Singer en la historia del debate sobre el calentamiento global.

La inspiración original para la participación de Al Gore con el tema del calentamiento global fue uno de sus profesores de Harvard, Roger Revelle. En 1957 Revelle había publicado datos que muestran el aumento de dióxido de carbono en la atmósfera. En 1965 ayudó a atribuir este incremento a la quema de los combustibles fósiles, y en 1982 predijo que el calentamiento global podría resultar de este aumento. Esto lo convirtió en "el padre del efecto invernadero".Sin embargo, Revelle no era un alarmista y tiende a recomendar cautela. En 1991, fue coautor de un artículo de Fred Singer, diciendo, entre otras cosas ", drástica, precipitada y, especialmente, las medidas unilaterales para retrasar los efectos putativos de efecto invernadero puede llegar a costar empleos y la prosperidad y el aumento de los costos humanos de la pobreza mundial, sin ser eficaz ". Esto no era lo que Al Gore y sus amigos querían oír. En la campaña presidencial de 1992, las reclamaciones fueron flotando Revelle que se había convertido en senil antes de su muerte (de un ataque al corazón, más tarde en 1991).El cantante fue acusado públicamente por Justin Lancaster, que era un asesor científico del Gore, de aprovecharse de la incapacidad mental Revelle y poniendo su nombre en el artículo sin su consentimiento. El cantante demandó. Lancaster reiterada, con una retractación pública (que posteriormente ha tratado de recuperar, aunque todos los detalles y pruebas del caso están en el registro público).

Me enteré de esta nota fea a la cruzada medioambiental de Gore moral de los negadores, los científicos de renombre mundial que se levantó contra la histeria del calentamiento global, la persecución política y el fraude * (* Y los que tienen demasiado miedo para hacerlo), de Lawrence Solomon [Richard Vigilante Books, 2008]. Salomón es un ambientalista canadiense que se interesó y comenzó a escribir artículos de prensa sobre el calentamiento global "negacionistas", curiosidad por saber si las afirmaciones de Gore et al. fuera cierto que esas personas eran chiflados marginal, sin reservas, o las herramientas de la industria petrolera. No se parecía a ninguna de estas acusaciones eran ciertas, y Salomón se preocuparon de que "Gore consenso científico" sobre el clima era fraudulenta. Por supuesto, después del descubrimiento de este tipo, es poco probable que Salomón (como Bjorn Lomborg) los que ya se describió como ecologista un "" por la comunidad de los ambientalistas políticamente activa.Tal herejía en sí desacredita a la propia Agencia del medio ambiente fe.

Sin embargo, los canadienses han hecho un trabajo Yeoman en esta zona (tal vez porque no le importa un poco de calentamiento de allí). Primer caso de Salomón propias características de los canadienses Stephen McIntyre y Ross McKitrick. Que desacreditaron a la infame "palo de hockey" gráfico de temperaturas creado por Michael Mann, que puso de manifiesto que 1998 ha sido el año más cálido del milenio, después de unos años de aumento de la temperatura alarmante y sin precedentes. Parece que había Mann, intencionalmente o no, mal uso de sus métodos estadísticos. Su gráfico podría haber sido generado con el ruido. McIntyre ahora tiene su propio sitio web, el clima de Auditoría, y McKitrick tiene su propio libro, tomado por asalto, La Ciencia en Problemas, Políticas y Política del calentamiento global [con Christopher Essex, Key Porter Books Limited, Toronto, 2002, 2007]. Este es uno de los exámenes más impresionante tanto de la ciencia y la política del calentamiento global. Mientras tanto, Bjorn Lomborg tiene su propio libro respectivo, enfriar, La Guía del ecologista escéptico para Calentamiento Global [Knopf, 2008]. Por supuesto, ser un "escéptico" sobre el cambio climático se está convirtiendo en un delito de opinión, y todos vamos a acabar en la versión de Al Gore de los Juicios de Nuremberg.

En los dos años [2007] desde la publicación de Michael Crichton Estado de miedo [2005], se examinan a continuación, ha recibido una notificación pública es escasa y los tambores de la propaganda sobre el calentamiento global no sólo continuó sino que aumentó. Al Gore dio la presentación en PowerPoint sobre el tema en una película, An Inconvenient Truth [2006], que fue razonablemente bien en la taquilla. EE.UU. senadores Jay Rockefeller y Olympia Snowe, han escrito una carta abierta a Exxon-Mobil amenaza de algún tipo de acción, porque la empresa petrolera ha financiado algunos anti-investigación sobre el calentamiento en un think tank. Aparentemente, piensan que la libertad de expresión ha sido suspendida y que negar el calentamiento global debe tener la prohibición legal mismo que la negación del Holocausto en Francia. Joseph Kennedy II ha llamado a los escépticos del calentamiento global "bastardos" - algo que nunca he notado a nadie llamar a Albert Einstein a causa de su escepticismo sobre la mecánica cuántica. También parecen pensar que la fuente de financiación de la investigación siempre determina los resultados que se esperan - un principio que también se desacredita, por supuesto, la investigación financiada por el gobierno federal, de manera uniforme que sirve a los intereses del gobierno federal en lo que implica que , incluyendo Jay Rockefeller y Olympia Snowe, debería tener más poder. Por desgracia para Al Gore, el carácter práctico de su verdad, que es ilimitado para el gobierno y la economía de comando, lo que significa dinero y el poder para él y sus amigos, apareció en la campaña de 2006 para la Proposición 87 en California.Esto fue a las compañías petroleras los impuestos para financiar la investigación sobre la "energía alternativa". Gore iba a soportar dos niveles de humillación en la campaña: (1) que su propia campaña de anuncios para la propuesta fue retirada para ejecutar una serie de anuncios donde sólo Bill Clinton, y (2) que la proposición fue derrotado decisivamente. Como ocurrió, una semana después de las elecciones, The Economist menciona que aproximadamente el 10% del capital de riesgo que ya está sucediendo en la investigación sobre combustibles alternativos y la energía. Sin embargo, puesto que la investigación ha sido constante en las cosas de este tipo desde los años 70, con resultados limitados, ¿cuánto más se puede esperar en el corto plazo es una buena pregunta.

Con muy poco en el modo de comentario escéptico desde el carro de los medios de comunicación para Gore, et al. Imparable calentamiento global, cada 1.500 años, por S. Fred Singer y Dennis T. Avery, finalmente es un poco de aire fresco. No son tan escéptico sobre el calentamiento Crichton como tal, sino que van después de la tesis de que tiene algo que ver con las actividades humanas y es algo que debemos, o puede hacer algo al respecto. Uno de los aspectos de su enfoque incluye los ritmos naturales de calentamiento y enfriamiento en la historia de la Tierra. Otro es el papel de dióxido de carbono en relación con el efecto invernadero de calentamiento. Con ambos, alguna información de abrir los ojos viene de un artículo publicado por la Sociedad Geológica de América en la actualidad GSA de julio de 2003 [Vol.13, N º 7], "Driver Celestial de Clima Fanerozoico? por Nir J. Shaviv, de la Universidad Hebrea, y Ján Veizer de la Universidad de Ottawa y la Universidad del Ruhr. Todo el artículo está disponible en texto o en formato pdf en línea.

Un poco número de datos de Veizer y el artículo Shaviv, he añadido el siguiente cuadro, cuya forma original, mostrando las transgresiones y regresiones de los océanos, pueden ser examinadas en "El Pulso de la página web de la Tierra". El cuadro completo en "Driver Celestial de Clima Fanerozoico?" se puede ver en una nota, junto con algunos otros datos de la historia del clima. Aquí podemos ver América del Norte, en color marrón y naranja, de pie seco durante las regresiones, y el océano, en azul, rodando sobre el arco transcontinental durante las transgresiones. Lo que he añadido, también en azul, es una indicación de los casquetes polares, cuando la tierra ha tenido. Esto se muestra cuando las barras azules se extienden en cada extremo de la tabla - el "Icehouse" las condiciones para la Tierra. Con el tiempo, Fanerozoico, la historia geológica es decir, desde el comienzo del Cámbrico, algo bajo de los últimos 600 millones de años, ha habido cuatro "Icehouses". En la Era Paleozoica, desde el Cámbrico al Pérmico, esta glaciación en cuestión. Veizer y Shaviv nota la presencia de "restos de hielo navegable" y "depósitos glaciales" en los períodos de "nevera". Durante el Mesozoico, el tiempo de los dinosaurios, desde el Triásico al Cretácico, la fábrica de hielo, se indica con un tono diferente de azul, porque, como Veizer y Shaviv decir, "true casquetes polares no han sido documentadas en este intervalo de tiempo." Hay algunos "restos de hielo navegable", pero no hay pruebas de la glaciación. Por último, estamos en un depósito de hielo a nosotros mismos, que se ha mantenido la mayor parte de la Era Cenozoica, con la glaciación desde el Pleistoceno y los casquetes polares y los glaciares que persisten. He añadido un quinto depósito de hielo antes del Cámbrico, porque esto es ahora una teoría popular acerca de por qué la vida sólo se convirtió en abundante y variada en la "revolución del Cámbrico" - antes de eso tuvimos una "Tierra bola de nieve", con todos los mares congelados y de vida limitada por la oscuridad de descongelado, el agua del subsuelo. Dado el ritmo de la icehouses, es razonable que no debe ser un episodio Precámbrico de todos modos.

La temperatura de la Tierra a través del tiempo geológico sigue la sucesión de "nevera" y "invernaderos", es decir, los períodos más cálidos intermedios. Las temperaturas más altas de todos fueron después de la final de la fábrica de hielo del Pérmico. Esto produce un ciclo de alrededor de 135 millones de años. Veizer, un geólogo, no sabía qué evento periódico, en su caso, podría dar cuenta de este ciclo. Ha habido cuatro icehouses Fanerozoico en el tiempo y, por ejemplo, seis transgresiones. El Tippecanoe y transgresiones Absaroka centro muy bien en icehouses, pero no de otro modo obtener un partido. La transgresión zuñi cuidadosamente ambos lados de la fábrica de hielo Jurásico-Cretácico y el efecto invernadero siguientes.Entonces descubrió que Veizer Shaviv, un astrofísico, sabía lo que podía coincidir los ciclos.Fue entonces cuando la tierra, en su órbita alrededor de la Vía Láctea, pasa a través de los brazos espirales de la galaxia - ahora estamos en el Brazo de Orión de la Galaxia (inicio de la M42, la Gran Nebulosa de Orión). Su artículo es principalmente sobre el efecto que esto podría tener sobre el clima. Resulta que mientras en un brazo espiral, la Tierra recibe más en el camino de la radiación de los rayos cósmicos. Este ioniza los átomos en el aire, que ofrecen una mejor núcleos de formación de nubes. El icehouses por lo tanto se caracteriza por una mayor cobertura de nubes, lo que aumenta el albedo de la Tierra y refleja más luz solar hacia el espacio. La Tierra se enfría. Un proceso puramente geofísicos parecen ser responsables de las transgresiones, y el efecto de calentamiento que podemos esperar de agua que cubre el continente es aparentemente compensado por el efecto de enfriamiento. El Jurásico-Cretácico Icehouse parece ser la excepción, donde la disposición de los contingentes, con el mar abierto en los polos, impidió que la glaciación y la formación, como Veizer y Shaviv decir, de "verdadero casquetes polares".

Lo que el registro de la temperatura, icehouses, y las transgresiones en realidad no se corresponden con la historia de la concentración de dióxido de carbono en la atmósfera. Veizer y Shaviv citar tres estudios diferentes sobre los niveles de CO2. Los estudios no se ponen de acuerdo muy bien, pero están de acuerdo en dos cosas: (1) el auge y caída de CO2 no está relacionado con el ascenso y descenso de la temperatura, y (2) la concentración de CO2 derecho ahora se encuentra en un mínimo histórico . Yo había visto este mencionó un año o así que hace apenas un documental en la televisión, en algo así como el canal de la ciencia, pero no había dado una referencia y nada más que he visto ha mencionado nada de eso. Un estudio (III GEOCARB, por Berner y Kothavala, 2001) muestra realmente los niveles de CO2 muy elevados en un par de los periodos más fríos, durante el Ordovícico y cerca del límite Cretácico Jurásico. El efecto de esto, por supuesto, es demostrar que los niveles de CO2 no tienen mucho que ver con la temperatura de la Tierra. Esta es una mala noticia para los amantes del calentamiento global, que quieren una relación directa entre el calentamiento y los males de los automóviles, las compañías petroleras, y el consumismo estadounidense.

Singer y Avery, por supuesto, tienen mucho más en su libro que un examen de la información y Veizer Shaviv's. Que llevo con este último porque es tan devastador, y porque los debates públicos sobre el calentamiento global aún suele dejar de señalar que la Tierra ha sido mucho más cálida en el pasado que ahora, y que durante gran parte del tiempo Fanerozoico la Tierra no tuviera los glaciares o polar caps. La impresión que recibe el público es que cualquier calentamiento matar a los arrecifes de coral y luego a todo el planeta, así que mejor abandonar la producción de energía modernos de inmediato. El título de Imparable calentamiento global, cada 1.500 años se refiere a los ciclos de calentamiento y enfriamiento en una escala mucho menor que el tiempo Fanerozoico, de hecho, sólo desde el final de la última glaciación, hace unos 10.000 años. Durante varios miles de años después de que la Tierra era relativamente mucho más caliente que ahora - el Óptimo Climático, que Singer y Avery, a diferencia de Al Gore, no hay razón para mencionar. Desde entonces, los ciclos de cambio climático son bastante evidentes durante los últimos 2000 años. Así, pasamos del calentamiento romana de los primeros años de AD, a la refrigeración Edad Media, con el calentamiento medieval - el Óptimo Climático Little - a la Pequeña Edad de Hielo, y finalmente a la tendencia al calentamiento que ha continuado desde alrededor de 1850 . Los recientes períodos de enfriamiento parecen incluir la sequía en lugares clave, y el enfriamiento global desde el Óptimo Climático ha supuesto la desecación gradual, por ejemplo, en el Sahara. El enfriamiento Edad Media puede haber añadido a los problemas del Imperio Romano e incluso puede haber eliminado la civilización maya, que era totalmente dependiente del agua de lluvia para el agua.Del mismo modo, la teoría es que un anterior llevó a un enfriamiento de la sequía en Egipto, a fin de que los males del primer periodo intermedio se vinculan con el clima - el gran lago Fayum, posteriormente amada XII dinastía de los reyes, parece que se han secado durante este período.

Aunque no parece que hablar de ello en el libro, el "1.500 años" en la cantante y el título de Avery puede referirse a un ciclo climático que se ha percibido en los datos del Pleistoceno, el Ciclo de "Bond", entre 1100 y 1500 años. Su tesis es que aparentemente el ciclo Bond simplemente ha continuado en los tiempos post-glacial. ¿Qué motivó o las unidades del ciclo de Bond es una buena pregunta. Puede ser un ciclo de actividad solar, u otras cosas pueden estar involucrados. Todo lo que sabemos es que es un evento de periodicidad en el registro sedimentario.

Cosas como el Óptimo Climático y la Pequeña Edad de Hielo que solía ser conflictiva, pero dado que no son útiles para asustar el calentamiento global de rumores, hay casos examinados por Singer y Avery, donde se han hecho intentos de explicar a la basura o manipular el datos. El más infame de estos puede haber sido el "palo de hockey" gráfico de Michael Mann, que eliminó la mayoría de las variaciones en la temperatura de los últimos 1.000 años y puesto una fuerte subida y sin precedentes (la hoja de palo de hockey) en las temperaturas en el siglo 20 [pp.68-69]. Otros intentos de explicar las variaciones de la participación histórica afirmando que el calentamiento medieval o de la Pequeña Edad de Hielo sólo ocurrió en Europa o en sus inmediaciones y no fenómenos globales. Singer y Avery repasar todas las pruebas, de todo el mundo, en contra de estos esfuerzos revisionistas.

Singer y Avery bien resumir los "aliados más fuertes" de la teoría de las causadas por el hombre (antropogénico) el calentamiento global:

"Los modelos de computadora que no puede explicar de temperatura del pasado, y mucho menos predecir con exactitud los futuros, y cuya financiación depende de que el miedo del público sobre el calentamiento radical.
"Los activistas que se oponen a la tecnología moderna, aborrecen las poblaciones humanas en expansión, y sobre todo el odio de la energía de bajo costo que reduce la pobreza y la miseria humana. Dicen que tenemos que renunciar a un estilo de vida ... atractivos, renunciar a la agricultura de alto rendimiento, reducir millones de vidas, y poner más presión sobre los bosques del Tercer Mundo para la leña.
"Los políticos europeos.
"Los periodistas en busca de noticias de miedo.
"Diversas burocracias nacionales e internacionales y las Naciones Unidas designó a los miembros y el personal del Grupo Intergubernamental sobre el Cambio Climático." [p.198]
Esta lista, por supuesto, es corto en la ciencia y la evidencia y largo plazo en la política, tanto la de los activistas con un hacha para moler y moral de los políticos y burócratas, cuyo alquiler de interés está en la búsqueda de su propio poder. Desde el susto entusiastas mongering males como la culpa a las compañías petroleras o el consumidor estadounidense, los objetivos que ya parecía disgusto de todos modos, como parte de la agenda general y de la ideología de la izquierda, que se merecen al menos, tanto en términos de ad hominem los ataques, ya que eches. Pero esto no es una cuestión menor. El público se le dice constantemente que el escepticismo o la lucha contra la evidencia contra el calentamiento global antropogénico es simplemente parte de la desinformación de la auto-empresas petroleras interesadas o empresas relacionadas, que nos impiden utilizar y desarrollar las fuentes alternativas de energía que habría de salvar la Tierra y el plomo a "sostenible" de crecimiento. Hay muchos que sinceramente puede creer este escenario, pero con muchos activistas de muchos es una cortina de humo para un "programa" (como les gusta decir) de algo muy diferente: en lugar de un sistema virtuoso de la pobreza (como en Cuba) y un gobierno que hará que el "decisiones difíciles" de obligar a la gente en que la pobreza (como en Cuba). Ellos pueden saber que "energía alternativa" no está disponible (o es de origen nuclear, que también es objetable), y que las compañías petroleras son simplemente la verdad haciendo su trabajo. Es el trabajo, la energía barata, que no me gusta. El capitalismo, la libertad, la prosperidad, y Estados Unidos son el enemigo, como lo han sido durante muchos años. Mientras que la prensa ha hecho su mejor hacer caso omiso de Michael Crichton en esto, y ciertamente ignorar Singer y Avery (y Veizer y Shaviv), también vemos que cuando el público se da cuenta de lo que el programa real y las consecuencias de la empresa son, como con la Proposición 87 , de la talla de Al Gore sale en el extremo corto. Incluso mejor, el mundo en desarrollo, como India y China, tienen poca paciencia para los ricos occidentales (que es lo que los activistas ecológicos por lo general son) diciéndoles que deben permanecer en la pobreza. China probablemente tendrá la economía más grande del mundo en 2020, y aun sin democracia, el gobierno chino está esperando el poder que esto le dará a su país. Si los Estados Unidos debe maniatar su propia economía con restricciones de energía, tanto mejor. Es instructivo sobre la forma en que la prensa ocupa en estos días que las historias sobre el calentamiento global a menudo contienen énfasis que el nivel del mar y la sequía afectará a países pobres del Tercer Mundo más, sin mencionar que las restricciones propuestas en la producción de energía condenar a los países mismos de la pobreza sigue . Afortunadamente, los propios países, principalmente africanos, saber cuál es la amenaza más inmediata a su bienestar es, y es rico y cómodo occidental do-gooding eco-activistas, no el calentamiento global.

Michael Crichton, State of Fear, HarperCollins, 2004

Dr. Christopher Landsea, de la División de Investigación de Huracanes de la Nacional Oceanográfica y Atmosférica (NOAA) Atlántico Oceanográfico y Meteorológico del Laboratorio, se ha retirado de la autoría del Cuarto Informe de Evaluación de las Naciones Unidas del Grupo Intergubernamental sobre el Cambio Climático (IPCC)

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Imparable calentamiento global, la nota



El cuadro completo en "Driver Celestial de Clima Fanerozoico?" se puede ver a la derecha. Es reducido de esta página, pero una versión de tamaño completo se emergente haciendo clic en el gráfico. Asimismo, una versión de tamaño completo de la leyenda se emergente con un clic.

Las características más importantes de esto son (1) de la línea de color negro oscuro en la parte inferior del gráfico, que son las temperaturas medias en la resolución 10/50, como se explica en la leyenda, desde el final del período Cámbrico, y (2 ) las líneas roja, verde y azul en la parte superior de la tabla, que son diferentes reconstrucciones (con la propagación de la incertidumbre de dos de ellos) para las concentraciones de dióxido de carbono en la atmósfera.


Figura 2 - Tendencias a largo plazo en 20 años de relaciones d18O medida en el núcleo de hielo de Groenlandia GISP2. A = Tendencia desde el comienzo del Holoceno, 10.000 B.P.Pendiente = -0,000024 **. B = Tendencia desde el comienzo de la era cristiana, 2000 B.P.Pendiente = -0,000196 **. C = Tendencia desde el comienzo de la Pequeña Edad de Hielo, 700 B.P. = Pendiente -0,000067 NS. D = Tendencia desde el comienzo de la revolución industrial, 100 pb = Pendiente +0.003518 NS. Pendiente positiva indica aumento de las temperaturas. ** = Altamente significativa (p = 0,01), NS = no significativo.
Para la historia de las temperaturas en época más reciente, en una escala mayor, tenemos el gráfico de la derecha, de John C. Davis y Geoffrey C. Bohling, se hace referencia en Geológico perspectivas de cambio climático mundial por LC Gerhard, W.E. Harrison, y B.M. Hanson [Asociación Americana de Geólogos Petroleros, 2001] - la leyenda de Gerhard, Harrison y Hanson se incluye en la tabla. Con la situación actual a la izquierda, la tabla de arriba muestra las temperaturas durante la última glaciación (el Younger Dryas), y luego desde el comienzo de la época del Holoceno. En promedio, las temperaturas han disminuido por un pequeño pero constante entre. En la tabla inferior tenemos una ampliación de la parte más reciente de la tabla superior, en los últimos dos mil años. El Calentamiento romano, Edad Media enfriamiento y calentamiento medieval son evidentes, con la Pequeña Edad de Hielo en un color diferente (se parece a violeta). Desde el final de la Pequeña Edad de Hielo, las temperaturas han aumentado significativamente, pero aún no se alcanzó tan altas como lo fue en un momento de la Pequeña Edad de Hielo.

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Michael Crichton,

Estado de miedo, una novela de

HarperCollins, 2004

Michael Crichton será probablemente mejor conocido por su novela Jurassic Park [1990], que se convirtió en una exitosa película, pionera en el uso de los personajes creados digitalmente.Sus novelas La amenaza de Andrómeda, Congo y El Mundo Perdido se convirtió también en películas. En todos ellos ha habido un elemento de ciencia ficción y el hecho de la ciencia. Con Estado de miedo tenemos un poco de ciencia ficción, con la ficción de misterio, y una gran cantidad de hecho de la ciencia, cuya naturaleza, sin embargo, es un asunto de gran controversia y la politización. En efecto, la novela es tanto acerca de la política y las disputas políticas mezcladas con la ciencia como cualquier otra cosa. Así, Estado de miedo es una novela más inusuales en las notas y con una bibliografía, que se advertía al lector son reales y graves. Al final, también recibe un mensaje de "autor" y un apéndice, "¿Por qué politización de la ciencia es peligroso", que analiza casos históricos de las modas pseudo-científicas como la eugenesia y la biología de Lysenko.

La controversia política y científica en este caso es sobre la teoría y la evidencia del calentamiento global. La idea general de la novela se puede deducir de la circunstancia de que la historia es sobre una conspiración de la eco-terroristas para generar varios eventos catastróficos, que incluirá un gran número de muertes, sólo para dar publicidad a una conferencia sobre la ecología "el cambio climático abrupto. " En el curso de ella también recibe un golpe fuerte a los activistas políticos en Hollywood. Uno de los personajes tal, Ted Bradley, se dice que ha desempeñado el Presidente en una larga serie de televisión en funcionamiento.Esto sería una referencia a Martin Sheen, un activista de izquierda que juega el presidente en The West Wing - aunque el nombre y la personalidad de Ted Bradley evocar Ted Baxter, el presentador de noticias pomposo y absurdo en la antigua Mary Tyler Moore Show. Bradley termina consiguiendo literalmente comido por caníbales - acaloradamente después de afirmar que el canibalismo es un mito usado para desprestigiar a los pueblos del Tercer Mundo. Por la dureza, esto está en competencia con el tratamiento de los activistas de Hollywood en Team America, World Police (en donde se limitan a conseguir sus cabezas volaron o son consumidos por el fuego). La eco-terroristas se identifican a sí mismos como el "Frente de Liberación del medio ambiente", ELF, que es una referencia muy apenas disimulado de la "Frente de Liberación de la Tierra", también Elf, que ha participado en tan sólo los tipos de incendio y vandalismo descrito inicialmente en la libro. El ELF real, sin embargo, ha evitado hasta ahora cualquier pérdida de vida en sus actos (salvo para los animales, irónicamente), mientras que la ELF de la novela comete un asesinato en las primeras páginas y los intentos de muchos otros posteriormente.

Como un cuento, Estado de miedo tiene algunos inconvenientes. Aunque la investigación está en manos de agentes federales contra el terrorismo, que no tienen ninguna dificultad en conseguir la cooperación de la policía local, no vemos más de dos agentes de las operaciones, se mueven por tomar prestado un avión de la empresa, y anti - los ataques terroristas que razonablemente se requieren equipos de SWAT y la cooperación militar se llevan a cabo sólo por estos dos agentes, con la ayuda de un millonario privado, uno de sus abogados, uno de sus empleados, y una de las sobrinas del agente. Fracasos y reveses plaga de las operaciones, generalmente porque el equipo pequeño, con una mayoría de aficionados, son superados en número, armamento, y, a menudo burlado por los chicos malos. De desastres es evitar principalmente por la buena suerte. Esto es ridículo. Las versiones de estos equipos son comunes en las historias donde las autoridades no creen en los malos, o están en connivencia con ellos, y un grupo de excéntricos de los particulares deben salvar el día. En Estado de miedo, sin embargo, donde los buenos son dirigidos por agentes federales, el enfoque de grupo de excéntricos no tiene ningún sentido. Cuando los chicos malos están manejando de Arizona en los grandes camiones de mudanzas, claramente etiquetado, y la policía de Arizona están cooperando, es increíble que el equipo ELF conjunto con su equipo, no podría haber recogió.Crichton realmente debería haber dado todo esto de pensar un poco más.

Por otra parte, la historia es sólo un marco en el que colgar las cuestiones científicas y políticas. Esto funciona bastante mejor. El debate sobre el calentamiento global consiste en varias capas de preguntas. (1) ¿Es el aumento de la temperatura media mundial? (2) ¿Las actividades humanas tienen nada que ver con esto? (3) ¿Podría el calentamiento se produzcan sin la intervención humana? (4) ¿Tiene importancia? (5) ¿Podría el calentamiento tal, si está sucediendo, ser, en general, deseable? Las respuestas a corto aquí son (1) tal vez, (2) tal vez, (3) Sí, (4) tal vez no, y (5), posiblemente. En más detalle:

Crichton tiene una línea muy difícil escéptico sobre si el calentamiento se está produciendo en todos y da una buena cantidad de detalles al respecto en el libro. Aunque cualquiera viendo las noticias recientemente, sería la impresión de que los glaciares se reducen en todas partes, que la capa de hielo antártica se derrite con rapidez, que las temperaturas están aumentando en todas partes, y que los niveles del mar están aumentando rápidamente y peligrosamente, todos estos son negó rotundamente. El libro comienza con un geólogo islandés luchando contra sus eco-activista de los patrocinadores. Quieren que su inclinación de datos, o al menos su interpretación, para apoyar el calentamiento global, pero su investigación pasa a mostrar que los glaciares en Islandia están avanzando, no retrocediendo. Los datos de la Antártida es que, mientras que partes del continente se están calentando, la mayoría de hecho se ha vuelto más frío. Todo esto es interesante e importante, pero también es una cuestión empírica. El debate político, las novelas, y los filósofos no se va a resolver si el planeta es el calentamiento en general o no.




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