Global Warming on Mars

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5 Mar 07

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 Warming on Mars Suggests Solar, 
Not Human, Cause, Scientist Says

Further, we’re headed for a 
"steep cooling" in 15-20 years

28 Feb 07 - Simultaneous warming on Earth and Mars suggests that our planet's recent climate changes have a natural—not human- induced—cause, says Habibullo Abdussamatov, head of the St. Petersburg's Pulkovo Astronomical Observatory in Russia.

Earth is currently experiencing rapid warming, which the vast majority of climate scientists says is due to humans pumping huge amounts of greenhouse gases into the atmosphere.

Mars, too, appears to be enjoying more mild and balmy temperatures.

This Mars warming, says Abdussamatov, "is evidence that the current global warming on Earth is being caused by changes in the sun."

"The long-term increase in solar irradiance is heating both Earth and Mars," he said.

"Abdussamatov believes that changes in the sun's heat output can account for almost all the climate changes we see on both planets. (I agree.)

Mars and Earth, for instance, have experienced periodic ice ages throughout their histories. "Man-made greenhouse warming has made a small contribution to the warming seen on Earth in recent years, but it cannot compete with the increase in solar irradiance," Abdussamatov said.

By studying fluctuations in the warmth of the sun, Abdussamatov believes he can see a pattern that fits with the ups and downs in climate we see on Earth and Mars.

All planets experience a few wobbles as they make their journey around the sun. Earth's wobbles are known as Milankovitch cycles and occur on time scales of between 20,000 and 100,000 years.

These fluctuations change the tilt of Earth's axis and its distance from the sun and are thought to be responsible for the waxing and waning of ice ages on Earth. (I agree. The Milankovitch cycle is called the "Pacemaker of the Ice Ages.")

Abdussamatov also dismisses the greenhouse effect, in which atmospheric gases such as carbon dioxide help keep heat trapped near the planet's surface.

He claims that carbon dioxide has only a small influence on Earth's climate and virtually no influence on Mars. (I agree.)

Abdussamatov suggests that the sun holds something quite different in store.

"The solar irradiance began to drop in the 1990s, and a minimum will be reached by approximately 2040," Abdussamatov said. "It will cause a steep cooling of the climate on Earth in 15 to 20 years." (I agree.)

"Abdussamatov's work has not been well received by other climate scientists."

See the full article, and the other scientist’s comments, at:

http://news.nationalgeographic.com/news/2007/02/070228-mars-warming.html
Thanks to both Christopher Miller and Martin Hoer for this link

 




               

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Order Book I Q & A I Book Reviews I Plant Hardiness Zone Maps I Radio Interviews I Table of Contents I Excerpts I Author Photo I Pacemaker of the Ice Ages I Extent of Previous Glaciation I Crane Buried in Antarctic Ice Sheet I Ice Ages and Magnetic Reversals I It's Ocean Warming I E-Mail Robert at rwfelix@juno.com l Expanding Glaciers