Showing posts with label global warming. Show all posts
Showing posts with label global warming. Show all posts

Friday, October 19, 2007

Junk Science: Hey Al Gore, We Want a Refund!

A British judge ruled on the eve of Al Gore co-winning the Nobel Peace Prize that students forced to watch "An Inconvenient Truth" must be warned of the film’s factual errors. But would there be any science at all left in Gore’s "truth" if these errors and their progeny were excised?
Minutes of non-science filler dominate the opening sequence — images of the Gore farm, Earth from space, Gore giving his slideshow and the 2000 election controversy. Gore then links Hurricane Katrina with global warming. But the judge ruled that was erroneous, so the Katrina scenes would wind up on the cutting-room floor. Another 12 minutes of filler go by — images of Gore in his limo, more Earth photos, a Mark Twain quote, and Gore memories — until about the 16:30 minute mark, when, according to the judge, Al Gore erroneously links receding glaciers — specifically Mt. Kilimanjaro — with global warming. The Mt. Kilimanjaro error commences an almost 10-minute stretch of problematic footage, the bulk of which contains Gore’s presentation of the crucial issue in the global warming controversy — whether increasing levels of atmospheric carbon dioxide drive global temperatures higher. As the judge ruled that the Antarctic ice core data presented in the film "do not establish what Mr. Gore asserts," this inconvenient untruth also needs to go.
[Note to readers: A video debate between Al Gore and climatologists on this point produced by me can be viewed by clicking here.]
After Gore lectures viewers on how global warming is a "moral issue" and how he came to realize this as a result of his son’s 1989 car accident, the next five or so minutes of film would seem to violate the judge’s concern about the film linking specific weather events with global warming. During this clip, Gore again spotlights Hurricane Katrina and other discrete weather events, including how 2005 was the hottest year on record (more on that later).
After still more filler footage about Winston Churchill, the 2000 election, and rising insurance claims from natural disasters, Gore spends about 35 seconds on how the drying of Lake Chad is due to global warming. The judge ruled that this claim wasn’t supported by the scientific evidence.
More filler leads to a 30-second clip about how global warming is causing polar bears to drown because they have to swim greater distances to find sea ice on which to rest. The judge ruled however, that the polar bears in question had actually drowned because of a particularly violent storm. On the heels of that error, Gore launches into a 3-minute "explanation" of how global warming will shut down the Gulf Stream and send Europe into an ice age. The judge ruled that this was an impossibility.
Two minutes of ominous footage — casting Presidents Reagan and George H.W. Bush, and Sen. James Inhofe (R-OK) in a creepy light and expressing Gore’s frustration with getting his alarmist message out — precede a more-than-9-minute stretch that would need to be cut. In this lengthy footage, Gore again tries to link global warming with discrete events including coral reef bleaching, the melting of Greenland, catastrophic sea level rise, Antarctic melting and more. But like Hurricane Katrina, these events also shouldn’t be linked with global warming.
Based on the judge’s ruling, the footage that ought to be excised adds up to about 25 minutes or so out of the 98-minute film. What’s left is largely Gore personal drama and cinematic fluff that has nothing to do with the science of climate change. It should also be pointed out that Gore makes other notable factual misstatements in the film that don’t help his or his film’s credibility. He says in the film that polio has been "cured," implying that we can cure "global warming." While a preventative polio vaccine does exist, there is no "cure" for polio.
Gore attempts to smear his critics by likening them to the tobacco industry. In spotlighting a magazine advertisement proclaiming that "more doctors smoke Camel than any other brand," he states that the ad was published after the Surgeon General’s 1964 report on smoking and lung cancer. But the ad is actually from 1947 — 17 years before the report. Gore also says in the film that 2005 is the hottest year on record. But NASA data actually show that 1934 was the hottest year on record in the U.S. — 2005 is not even in the top 10.
Perhaps worse than the film’s errors is their origin. The BBC reported that Gore knew the film presented incorrect information but took no corrective steps because he didn’t want to spotlight any uncertainties in the scientific data that may fuel opponents of global warming alarmism.
"An Inconvenient Truth" grossed about $50 million at the box office and millions more in DVD and book sales. Gore charges as much as $175,000 for an in-person presentation of his slide show that forms the basis for the film. Considering that a key 25 percent of "An Inconvenient Truth" is not true — and perhaps intentionally so — it seems only fair that Gore offer a refund to moviegoers, DVD/book purchasers and speaking sponsors. Where are the class action lawyers when you need them?

Steven Milloy publishes JunkScience.com and DemandDebate.com. He is a junk science expert and advocate of free enterprise and an adjunct scholar at the Competitive Enterprise Institute.

Friday, May 25, 2007

Junk Science: Hot Air Study Melts Global Warming Theory

By Steven Milloy
Global warming alarmists may want to expedite their efforts to hamstring the global economy with greenhouse gas regulation.
A new study touted as showing that we’re not sufficiently panicky about manmade carbon dioxide emissions actually supports the exact opposite conclusion. “Warnings about global warming may not be dire enough, according to a climate study that describes a runaway-train acceleration of industrial carbon dioxide emissions,” USA Today shrieked this week. The study authors reported in the Proceedings of the National Academy of Sciences that the rate of manmade carbon dioxide emissions was three times greater during 2000 to 2004 than during the 1990s.
Since increasing atmospheric carbon dioxide levels allegedly are causing global warming, the new study must mean that global temperatures are soaring even faster now than they did during the 1990s, right? Wrong, according to the most recent data from the U.S. Department of Commerce’s National Climatic Data Center.
By overlaying the atmospheric carbon dioxide trend onto graphs of near-surface temperatures, surface temperatures and ocean temperatures, it is readily apparent that ever-changing global temperatures aren’t keeping pace with ever-increasing atmospheric carbon dioxide levels. The bottom line is that while we may be burning more fossil fuels than ever beforerelatively inexpensive coal, oil and gas are facilitating steady global economic expansionthat activity isn’t having any sort of discernible or proportionate impact on global temperatures.

Not surprisingly, the study authors don’t seem to want you to know that fact since nowhere in their study do they even mention the word “temperature,” let alone do they present a graph comparing trends in atmospheric carbon dioxide with global temperature. Are such increasing rates of carbon dioxide emissions grounds for future worry? Study author Michael Raupach of the Center for Marine and Atmospheric Research in Canberra, Australia, told the Orange County Register that, “If emissions continue to increase at the rate of 3.1 percent a year, carbon dioxide concentration would rise to 560 parts per million in 2050 and soar to 1,390 parts per million in 2100.” That sure sounds scary, but what would such increases really mean for global temperatures? No one knows for sure. But it could easily be a non-event and there’s no scientific basis for pressing the panic-button.

First, despite all the carbon dioxide emitted by man since the industrial revolution, manmade carbon dioxide is an exceedingly small part of the total greenhouse effect — on the order of about 0.11 percent. Remember that we’re talking about atmospheric carbon dioxide levels in parts per million. You may choose to believe that a 3 percent annual increase in manmade carbon dioxide emissions — releases that represent way less than 1 percent of total carbon dioxide emissions — is something to worry about, but the numbers seem to speak for themselves.

Next, we’re not even really sure of the true relationship between atmospheric carbon dioxide and temperature. While the alarmists want us to believe that rising carbon dioxide levels necessarily increase global temperatures, scientific data from Antarctic ice cores indicate the exact opposite — increases in atmospheric carbon dioxide appear hundreds of years after increases in global temperature. If the temperature-carbon dioxide relationship indicated by the ice cores is correct, then Raupach’s concern is entirely backwards and misplaced. On the other hand, even if it were true that rising atmospheric carbon dioxide levels discernibly increased global temperatures, temperatures wouldn’t likely increase by very much.
Based on the physics of the greenhouse effect, a doubling of carbon dioxide levels from the pre-industrial period (supposedly around 280 parts per million) to 560 parts per million (about 48 percent higher than present levels), might lead to an increase in average global temperature on the order of less than 1 degree centigrade — and we’ve already experienced about 60 percent of that increase.
A further doubling of atmospheric carbon dioxide to 1,120 parts per million would result in even less of an increase in temperature because of the energy absorption properties of carbon dioxide. Essentially, the Earth only radiates so much energy back into the atmosphere that is available to be absorbed by carbon dioxide. Once all that energy is absorbed, superfluous carbon dioxide will not add to the greenhouse effect.

Study author Chris Field of the Carnegie Institution made the bizarre comment in the press release that we must “shift more of the economy toward activities like service industries and information technology” — as if the ever-expanding global population won’t require even more goods like food, energy, housing, clothing and transportation in the future. We should, of course, strive for energy efficiency and new energy technologies to an extent that’s reasonable. But we shouldn’t condemn conventional energy sources based on dubious reasoning, risk harming the global economy for no good reason and deprive poor nations of their right to develop — all in the misguided hope of manually adjusting the global thermostat.

Steven Milloy publishes JunkScience.com and CSRWatch.com. He is a junk science expert, and advocate of free enterprise and an adjunct scholar at the Competitive Enterprise Institute.

Friday, April 13, 2007

Junk Science: Can’t See the Warming for the Trees

By Steven Milloy / FOXNews.com
If you need further evidence that hysteria is outpacing science in the global warming debate, consider the study published this week about Northern Hemisphere forests actually causing significant global warming. Researchers from the Lawrence Livermore National Laboratory reported in the "Proceedings of the National Academy of Sciences" (April 17) that while tropical forests exert a cooling influence on global climate, forests in northern regions exert a warming influence — and it’s not just a trivial climatic effect.

Based on the researchers’ computer modeling, forests above 20 degrees latitude in the Northern Hemisphere — that is, north of the line of latitude running through Southern Mexico, Saharan Africa, central India and the southernmost Chinese island of Hainan — will warm surface temperatures in those regions by an estimated 10 degreesMost of the warming is predicted to occur north of 50 degrees latitude — that is, north of the line of latitude running just north of the U.S. border with Canada, through Northern France, Northern Mongolia and Southern Siberia.

As the researchers explained in their media release, forests affect climate in three different ways: they absorb carbon dioxide from the atmosphere and evaporate water to the atmosphere (which increases cloudiness), both of which cool the planet. Forests are dark and absorb sunlight (the “albedo” effect), warming the planet. In tropical forests, the net effect of these phenomena is cooling, while in Northern forests, the net effect is warming.

Although the media has largely ignored the study, it should give us plenty to think about. First, it’s a stunning reminder that we still have a very steep learning curve when it comes to climate and how nature and man may impact it. In addition to this study, just over a year ago scientists discovered that plants emit as much as 30 percent of the annual global production of methane, the third most important greenhouse gas after water vapor and carbon dioxide. Last fall, we learned that 5 years of cosmic ray activity could cause as much warming as 200 years of human greenhouse gas emissions. It’s no wonder that alarmists want — and need — us to rush to judgment about manmade global warming before scientific discoveries dismantle their shaky polemic.

Next, the United Nations projects that global temperatures may rise anywhere from 2.5 to 10.4 degrees Fahrenheit by 2100. So exactly how does the 10-degree warming caused by Northern forests fit into the picture? Could Northern forests be a (the) major contributor to the supposed problem of global warming? [IOW, these researchers are now saying that too many trees (in a given area) causes global warming!]

Then there are the eco-activist groups that have been spreading misinformation about Northern forests in their campaign against businesses that manufacture or sell products made from timber harvested from subarctic, or Boreal, forests. ForestEthics, for example, claims that “Because the Boreal holds more carbon than any other terrestrial landscape, its conservation is imperative. Degrading the Boreal landscape threatens to transform the Boreal from one of the few healthy ‘lungs of the planet’ into a net climate destabilizer.” Just last month, ForestEthics issued a report, “Robbing the Carbon Bank: Global Warming and Ontario’s Boreal Forest,” that alleged, “The logging of intact forests is one of Canada’s least recognized drivers of global warming.Having completely overlooked the albedo effect in its report, ForestEthics seems to have the net climate effect of Boreal forests exactly wrong. But this hasn’t stopped it from successfully attacking a variety of businesses for selling products made from Northern timber.

ForestEthics has browbeaten a long list of brand-conscious companies into commitments not to use timber from Northern forests including Apple Computer, Dell Computer, Federal Express, Hewlett-Packard, Home Depot, IKEA, Johnson & Johnson, Kinko’s, Lowe’s, Nike, Office Depot, Staples, Starbucks and many others. ForestEthics’ most recent success came last December at the expense of Limited Brands, which was targeted with the group’s “Victoria’s Dirty Secret” campaign (Victoria Secret’s catalogues used paper made from Northern timber). [Could it be that the hot models on the pages of the VS catalog were actually helping to COOL the planet? After all, according to LLNL researchers, cutting down the Northern forest trees would have a net-effect of cooling the planet.]

After caving in to ForestEthics, the Limited Brand’s Tom Katzemeyer said, “We’re hoping to raise the bar on the availability of environmentally friendly paper and pulp. …” But how will Limited Brands’ “hope” ever overcome the Boreal’s albedo effect? If global warming is the dreaded catastrophe advertised by the enviros, then Northern forests hardly seem all that eco-friendly insofar as they may cause 10 degrees Fahrenheit of warming by 2100.

Finally, let’s not overlook the scam factor. For years, global warming opportunists (aka “climateers”) urged consumers to compensate for their so-called “carbon footprints” by paying to plant trees. But as the facts slowly emerged about reforestation, the carbon-offset industry quietly backed off planting trees and moved on to other offset schemes. One carbon-offset vendor, The Carbon Neutral Co., says on its Web site, “In those early days, the icon of a tree and its emotional appeal were critical to attract audiences. But, thankfully, the market has grown in sophistication — markedly over the last 4 years, and such obvious symbols are less necessary.” Translation? Perhaps, “the facts have caught up with us and so we’ve changed shell games”?

Science is slowly, but similarly catching up with global warming alarmism. The only question is how the race will be won — with facts or fear?