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MIT Scientists Ask: Is Global Warming Part of a Natural Cycle? March 22, 2009

Posted by honestclimate in Discussions.
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MIT Scientists Ask: Is Global Warming Part of a Natural Cycle?

Posted on ICECAP

By Casey Kazan

A team of MIT scientists recorded a nearly simultaneous world-wide increase in methane levels -the first increase in ten years. What baffles the team is that this data contradicts theories stating humans are the primary source of increase in greenhouse gas. It takes about one full year for gases generated in the highly industrial northern hemisphere to cycle through and reach the southern hemisphere. Since all worldwide levels rose simultaneously throughout the same year, however, it is probable that this may be part of a natural cycle – and not the direct result of man’s contributions.

MIT’s Matthew Rigby and Ronald Prinn, the TEPCO Professor of Atmospheric Chemistry in MIT’s Department of Earth, Atmospheric and Planetary Science, state that this imbalance has resulted in several million metric tons of additional methane in the atmosphere. Methane is produced by wetlands, rice paddies, cattle, and the gas and coal industries, and is destroyed by reaction with the hydroxyl free radical (OH), often referred to as the atmosphere’s “cleanser.”

Methane accounts for roughly one-fifth of greenhouse gases in the atmosphere, though its effect is 25x greater than that of carbon dioxide. Its impact on global warming comes from the reflection of the sun’s light back to the Earth. Methane is broken down in the atmosphere by the free radical hydroxyl (OH), a naturally occuring process. This atmospheric cleanser has been shown to adjust itself up and down periodically, and is believed to account for the lack of increases in methane levels in Earth’s atmosphere over the past ten years despite notable simultaneous increases by man.

One thing does seem very clear, however; science is only beginning to get a focus on the big picture of global warming. Findings like these tell us it’s too early to know for sure if man’s impact is affecting things at “alarming rates.” We may simply be going through another natural cycle of warmer and colder times – one that’s been observed through a scientific analysis of the Earth to be naturally occurring for hundreds of thousands of years. See the full study here.

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Comments»

1. B G DRAKE - January 19, 2010

GLOBAL WARMING BALONEY1 I HAVE BEEN TO INDIA 21 times and the climate now is cooler in the south than it has ever been recorded. Our winter was a deep freeze here in Peoria thus far and the old networks on t-v act as if it is some kind of sedition to mention it. Hey, it don’t play in Peoria to lie, just like Obama’s change we can believe in. John Bolton said recently that it was part of the world government propaganda. I have a better word for it, but since I’m a pastor for 61 years I won’t say it. -B.G.Drake

2. Richard Welch - January 16, 2012

Man-made global warming is just the latest in the long line of mass delusions that make up most of human history. Not only is the recent mild warming episode well within the normal variations of the Holocene, it is now clear that CO2 does not cause warming. It actually works the other way around: Natural warming increases CO2. Both the historic pattern and geopulsation theory indicate we are near the mid-peak of the present interglacial period — which will be followed by another Pleistocene glaciation, as has always been the case for the past million years or so (see Roots of Cataclysm, Algora Publ. NY 2009).


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