[Vision2020] Human Activity Accelerating Astronomical Effects By Factor Of 10 Million

[Ted Moffett]

All-

Our sun will eventually cause fatal increases in Earth temperature in its
inevitable evolution into a red giant star.  When will these temperature
impacts become significant?  The article below estimates that in 800 million
years the sun's impact will raise Earth temperatures by 5 degrees, the same
amount predicted by some global warming models for the human impact on
global temperatures in the next century:

http://www.sussex.ac.uk/press_office/media/media191.pdf


http://72.14.253.104/search?q=cache:hAqjwfgBKT4J:www.sussex.ac.uk/press_office/media/media191.pdf+time+remaining+Earth+biosphere+sun+expansion&hl=en&ct=clnk&cd=6&gl=us

"As a first application, let us ask how long it will take for the
temperature of the Earth to rise by 5 degrees (the rise anticipated in the
next century or so if the current human-induced greenhouse effect continues
unchecked).  The equation predicts it will take the evolving sun about about
0.8 billion years to produce this rise- so human activity may
be accelerating astronomical effects by a factor of about 10 million."
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This puts the highly doubtful claim that the current warming trend on Earth
is mostly due to increases in solar activity into perspective, it seems.

Ted Moffett
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