Naked Science Forum
Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: johndiver on 21/09/2005 14:59:58
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Was just reading article on Martian polar caps at BBC news. The article mentioned the ice caps had been receding for three years now. Is this coincidence, or has global warming spread from Earth to Mars via solar winds carrying warm CO2 ... or is the sun increasing energy output and warming the entire solar system?
Any thoughts or observations on this?
http://news.bbc.co.uk/2/hi/science/nature/4266474.stm
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Good question. We have observed some stars that vary in energy output by as much as 10%, yet are considered normal. These stars vary rapidly so we were able to follow the change. Obviously our sun doesn't vary as fast or we would know the answer. Sicentists are throwing out various numbers as to how much of the global warming is due to the sun. I have seen numbers that range from 10% to 40% of the effect. Actually, I don't think the scientists have any solid, well accepted data on the subject. It is all just guesstimate right now. My concern is that scientists are choosing their data to promote research grants, and those are more likely if mankind can be blamed instead of the sun.
David
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The news is now reporting global warming on Mars. Dang earthlings are contaminating everything.
David
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The best example of global warming among our neighbors in the solar system is not Mars, but Venus. Mars hardly has any atmosphere, but Venus has a dense atmosphere that helps it to trap heat. As a result of that and Venus position closer to the Sun than ours, you can melt lead on the surface of that planet. That's some serious global warming.
Global warming on planet Earth is not likely to ever reach that point even if we continue to burn every grain or drop of fossil fuel we can get our hands on. Our air temperature might go up a fairly trivial 3 degrees fahrenheit over the next century. That might generate a bunch of killer hurricanes and make deadly droughts fairly common, and it could put parts of Florida under water, but nothing serious.
chris wiegard
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But with global warming, Canada, Russia, the Urals, and Georgia will have much better weather for growing crops. So the people from florida can move north or learn Russian[:)]
It isn't so much that the ox was gored, it was whose ox was gored.
David