25 Inconvenient Truths For Al Gore

By Iain Murray

Gorey Truths

With An Inconvenient Truth, the companion book to former Vice President Al Gore’s global-warming movie, currently number nine in Amazon sales rank, this is a good time to point out that the book, which is a largely pictorial representation of the movie’s graphical presentation, exaggerates the evidence surrounding global warming. Ironically, the former Vice President leaves out many truths that are inconvenient for his argument. Here are just 25 of them.

1. Carbon Dioxide’s Effect on Temperature. The relationship between global temperature and carbon dioxide (CO2), on which the entire scare is founded, is not linear. Every molecule of CO2 added to the atmosphere contributes less to warming than the previous one. The book’s graph on p. 66-67 is seriously misleading. Moreover, even the historical levels of CO2 shown on the graph are disputed. Evidence from plant fossil-remains suggest that there was as much CO2 in the atmosphere about 11,000 years ago as there is today.

2. Kilimanjaro. The snows of Kilimanjaro are melting not because of global warming but because of a local climate shift that began 100 years ago. The authors of a report in the International Journal of Climatology “develop a new concept for investigating the retreat of Kilimanjaro’s glaciers, based on the physical understanding of glacier–climate interactions.” They note that, “The concept considers the peculiarities of the mountain and implies that climatological processes other than air temperature control the ice recession in a direct manner. A drastic drop in atmospheric moisture at the end of the 19th century and the ensuing drier climatic conditions are likely forcing glacier retreat on Kilimanjaro.”

3. Glaciers. Glaciers around the world have been receding at around the same pace for over 100 years. Research published by the National Academy of Sciences last week indicates that the Peruvian glacier on p. 53-53 probably disappeared a few thousand years ago.

4. The Medieval Warm Period. Al Gore says that the “hockey stick” graph that shows temperatures remarkably steady for the last 1,000 years has been validated, and ridicules the concept of a “medieval warm period.” That’s not the case. Last year, a team of leading paleoclimatologists said, “When matching existing temperature reconstructions…

the timeseries display a reasonably coherent picture of major climatic episodes:

‘Medieval Warm Period,’ ‘Little Ice Age’ and ‘Recent Warming.’” They go on to conclude, “So what would it mean, if the reconstructions indicate a larger…

or smaller…temperature amplitude? We suggest that the former situation, i.e. enhanced variability during pre-industrial times, would result in a redistribution of weight towards the role of natural factors in forcing temperature changes, thereby relatively devaluing the impact of anthropogenic emissions and affecting future temperature predictions.”

5. The Hottest Year. Satellite temperature measurements say that 2005 wasn't the hottest year on record — 1998 was — and that temperatures have been stable since 2001 (p.73). Here’s the satellite graph:

6. Heat Waves. The summer heat wave that struck Europe in 2003 was caused by an atmospheric pressure anomaly; it had nothing to do with global warming. As the United Nations Environment Program reported in September 2003, “This extreme wheather [sic] was caused by an anti-cyclone firmly anchored over the western European land mass holding back the rain-bearing depressions that usually enter the continent from the Atlantic ocean. This situation was exceptional in the extended length of time (over 20 days) during which it conveyed very hot dry air up from south of the Mediterranean.”



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Scientists respond to Gore's warnings — By Tom Harris, Fri Oct 12 19:38

Scientists respond to Gore's warnings of climate catastrophe "The Inconvenient Truth" is indeed inconvenient to alarmists By Tom Harris Monday, June 12, 2006 ... more

By Tom Harris

Scientists respond to Gore's warnings

Fri Oct 12, 2007 19:38

Scientists respond to Gore's warnings of climate catastrophe "The Inconvenient Truth" is indeed inconvenient to alarmists

By Tom Harris

Monday, June 12, 2006

"Scientists have an independent obligation to respect and present the truth as they see it," Al Gore sensibly asserts in his film "An Inconvenient Truth", showing at Cumberland 4 Cinemas in Toronto since Jun 2. With that outlook in mind, what do world climate experts actually think about the science of his movie?

Professor Bob Carter of the Marine Geophysical Laboratory at James Cook University, in Australia gives what, for many Canadians, is a surprising assessment: "Gore's circumstantial arguments are so weak that they are pathetic. It is simply incredible that they, and his film, are commanding public attention."

See also:

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A sample of experts' comments about the science of "An Inconvenient Truth":

But surely Carter is merely part of what most people regard as a tiny cadre of "climate change skeptics" who disagree with the "vast majority of scientists" Gore cites?

No; Carter is one of hundreds of highly qualified non-governmental, non-industry, non-lobby group climate experts who contest the hypothesis that human emissions of carbon dioxide (CO2) are causing significant global climate change. "Climate experts" is the operative term here. Why? Because what Gore's "majority of scientists" think is immaterial when only a very small fraction of them actually work in the climate field.

Even among that fraction, many focus their studies on the impacts of climate change; biologists, for example, who study everything from insects to polar bears to poison ivy. "While many are highly skilled researchers, they generally do not have special knowledge about the causes of global climate change," explains former University of Winnipeg climatology professor Dr. Tim Ball. "They usually can tell us only about the effects of changes in the local environment where they conduct their studies."

This is highly valuable knowledge, but doesn't make them climate change cause experts, only climate impact experts.

So we have a smaller fraction.

But it becomes smaller still. Among experts who actually examine the causes of change on a global scale, many concentrate their research on designing and enhancing computer models of hypothetical futures. "These models have been consistently wrong in all their scenarios," asserts Ball. "Since modelers concede computer outputs are not "predictions" but are in fact merely scenarios, they are negligent in letting policy-makers and the public think they are actually making forecasts."

We should listen most to scientists who use real data to try to understand what nature is actually telling us about the causes and extent of global climate change. In this relatively small community, there is no consensus, despite what Gore and others would suggest.

Here is a small sample of the side of the debate we almost never hear:

Appearing before the Commons Committee on Environment and Sustainable Development last year, Carleton University paleoclimatologist Professor Tim Patterson testified, "There is no meaningful correlation between CO2 levels and Earth's temperature over this [geologic] time frame. In fact, when CO2 levels were over ten times higher than they are now, about 450 million years ago, the planet was in the depths of the absolute coldest period in the last half billion years." Patterson asked the committee, "On the basis of this evidence, how could anyone still believe that the recent relatively small increase in CO2 levels would be the major cause of the past century's modest warming?"