March 02, 2007
And What's Causing Global Warming on Mars?by Jonathan R. at 09:14 AM
Anyone who has actually tried to study the facts behind the "global warming" debate knows that the science is far from conclusive and the contention that it is settled and that there is scientific consensus is a flat-out lie. National Geographic reports on more data that suggests that changes in the Earth's temperature are a natural phenomenon driven by solar activity, since Mars is experiencing warming as well.
Simultaneous warming on Earth and Mars suggests that our planet's recent climate changes have a natural—and not a human- induced—cause, according to one scientist's controversial theory.Note National Geographic's insistence on calling this a "controversial" theory and the quizzical and confused tone of the writer, as if it is nearly impossible to acknowledge scientific data that runs counter to the Left's religion on "global warming."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.
In 2005 data from NASA's Mars Global Surveyor and Odyssey missions revealed that the carbon dioxide "ice caps" near Mars's south pole had been diminishing for three summers in a row.
Habibullo Abdussamatov, head of the St. Petersburg's Pulkovo Astronomical Observatory in Russia, says the Mars data 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.
Solar Cycles
Abdussamatov believes that changes in the sun's heat output can account for almost all the climate changes we see on both planets.
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.
Comments
Recently, there have been some suggestions that "global warming" has been observed on Mars. These are based on observations of regional change around the South Polar Cap, but seem to have been extended into a "global" change, and used by some to infer an external common mechanism for global warming on Earth and Mars. But this is incorrect reasoning and based on faulty understanding of the data....
http://www.realclimate.org/index.php/archives/2005/10/global-warming-on-mars/#more-192
....Thus inferring global warming from a 3 Martian year regional trend is unwarranted. The observed regional changes in south polar ice cover are almost certainly due to a regional climate transition, not a global phenomenon, and are demonstrably unrelated to external forcing. There is a slight irony in people rushing to claim that the glacier changes on Mars are a sure sign of global warming, while not being swayed by the much more persuasive analogous phenomena here on Earth...
Posted by: neologizer ![[TypeKey Profile Page]](http://www.gopbloggers.org/nav-commenters.gif)
at March 4, 2007 04:13 AM
.....Regardless of any discussion about solar irradiance in past centuries, the sunspot record and neutron monitor data (which can be compared with radionuclide records) show that solar activity has not increased since the 1950s and is therefore unlikely to be able to explain the recent warming.
http://www.realclimate.org/index.php/archives/2005/08/did-the-sun-hit-record-highs-over-the-last-few-decades/
Posted by: neologizer at March 4, 2007 04:18 AM
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