June 18, 2009

Absolute Hotness!


Of course I'm talking about global warming when I refer to absolute hotness. According to the latest government report on global climate change, we are headlong into a overheating planet.

Unfortunately, nothing could be further from the truth. The Executive Summary starts out with a bang:

Observations show that warming of the climate is unequivocal. The global warming observed over the past 50 years is due primarily to human-induced missions of heat-trapping gases. These emissions come mainly from the burning of fossil fuels (coal, oil, and gas), with important contributions from the clearing of forests, agricultural practices, and other activities.

Warming over this century is projected to be considerably greater than over the last century. The global average temperature since 1900 has risen by about 1.5ºF. By 2100, it is projected to rise another 2 to 11.5ºF. The U.S.average temperature has risen by a comparable amount and is very likely to rise more than the global average over this century, with some variation from place to place. Several factors will determine future temperature increases. Increases at the lower end of this range are more likely if global heat-trapping gas emissions are cut substantially. If emissions continue to rise at or near current rates, temperature increases are more likely to be near the upper end of the range. Volcanic eruptions or other natural variations could temporarily counteract some of the human-induced warming, slowing the rise in global temperature, but these effects would only last a few years.

Reducing emissions of carbon dioxide would lessen warming over this century and beyond. Sizable early cuts in emissions would significantly reduce the pace and the overall amount of climate change. Earlier cuts in emissions would have a greater effect in reducing climate change than comparable reductions made later. In addition, reducing emissions of some shorter-lived heat-trapping gases, such as methane, and some types of particles, such as soot, would begin to reduce warming within weeks to decades.
Where to start? How about with the first sentence: "Observations show that warming of the climate is unequivocal.". Like any other government run effort, the timeliness is not exactly great.

Climatecooling.org has this to say;

Study of the orbital mechanics of the solar system in the 1970s led Russians to believe the Earth was about to cool and we should prepare quickly because it will be catastrophic. Their arguments were lost in the rush to warming group-think in the 1990s, but the arguments for impending cold are well founded and still believed by many good scientists. As the sun goes even quieter and January, 2008 saw the greatest year to year temperature drop ever (128 years of NASA GISS data) and thru the end of 2008 remains relatively cool, it is clear cooling needs to be considered as a very plausible future. This is highlighted by 2 papers published in March 2008. Scafetta and West showed that up to 69% of observed warming is from the sun and remind us that the sun is projected to cool and Ramanathan and Carmichael show that soot has 60% of the warming power of CO2. Both papers state that these factors are underappreciated by IPCC. The soot may well explain the Arctic melting, as it has recently for Asian glaciers. Many scientists believe the temperature changes are more dependent on the sun than CO2, similar to the relationship in your home with your furnace. With the Sun's face nearly quiet, the monthly patterns over the last 12 months are most similar to those of 1797 preceding the Dalton Minimum of 1798-1823 during the little ice age (Timo Niroma).

The southern hemisphere has been cooling over the last 10 years, just about as much as the north has been warming. There is no proof within observational data of warming outside of natural variation. When 3 of the highest 5 or 6 years in the temperature record (since 1890) occurred over 70 years ago and 1900 was warmer than recent years in the USA (where the best data are), we are nowhere near statistical proof, nor even evidence of warming. Modelers are still unable to include important variables and no one is able to predict the future. At least Hadley Centre have tried (below). While CO2 continues to rise, the temperature has stabilized at a warm level, but not unusually so. Which way will it go? The world seems to be betting on warming. However, the probability of cooling may be equally valid and we must be prepared for both. Cooling presents the real danger. Things that go up and down only go so high. It has always been this way.
That's not exactly a bold refutation, as it hedges it's bets at the end. But clearly, the word "unequivocal" does not belong in the Executive Summary of the latest government report on climate change.

How about refuting the twinned ideas that (1) most of the climate change has resulted from human activity and (2) the global average temperature has risen by 1.5 degrees Fahrenheit since 1900? Well, blogger AJ Strata beat me to it - here. It's a great article.

For an alternative view of climate change, one not drenched in hyperbole and focused on the science and politics of the climate change debate, go here. The BBC documentary is worth watching.

There's so much more wrong with the report that it would take about 100 blog posts to dissect. I'm not sure it's even worth the effort given this.

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