On 12/12/2014 2:13 PM, [email protected] wrote:
On Friday, December 12, 2014 5:37:01 PM UTC, John Clark wrote:
On Fri, Dec 12, 2014 at 10:44 AM, <[email protected] <javascript:>> wrote:
>> Please explain how ether the 21,000 or 26,000 or 41,000 year
Milankovitch cycle can explain why the
Earth was colder than it's ever been 450 million years ago and
hotter than
any time in the last two billion years 360 million years ago.
> you asked this in previous climate row thread months back. I actually
answered
at the time and it was a pretty answer
Your answer would have been even prettier if it actually existed. I just
did a
search on that old thread and neither you nor anybody else explained how
the21,000
or 26,000 or 41,000 year Milankovitch cycle made the Earthcolder than it's
ever been
450 million years ago and made the Earth hotter than any time in the last
two
billion years 360 million years ago.
Nobody bothered to explain that it might have been volcanoes or asteroid strikes as well
as oribtal variations and they did that because it's completely irrelevant to current
global warming. We know that CO2 has increased from 300ppm to 450ppm and that we put
about twice that amount into the atmosphere. And we know how CO2 acts as a greenhouse
gas. So how the Earth warmed or cooled in the distant past is just your attempt at diversion.
Brent
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