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May 11, 2011 at 1:30 am (This post was last modified: May 11, 2011 at 1:51 am by ib.me.ub.)
(May 10, 2011 at 5:33 am)Chuck Wrote:
(May 10, 2011 at 5:23 am)ib.me.ub Wrote:
Chuck Wrote:
ib.me.ub]
Chuck Wrote:[quote=ib.me.ub Wrote:
Climate Change itself isn't caused by humans, but the rate of change is.
Were there no human induced warming, "climate change at this time should be going in the opposite direction" from what is observed based on what we know of the long tern natural factors impacting on global climate.
Links please.
Roe G (2006). "In defense of Milankovitch". Geophysical Research Letters
The "Milankovitch Hypothesis" has neither been properly evaluted or verified. I would say it is a good source for skeptics to lean towards.
Actually, Milankovich cycle predicts climactic condition over the last million years, as determined from Antarctic ice core samples, extremely well. The theory also predicts we should currently be in the first half of a period of downward trending global temperature. Milankovich cycle thus suggest agent(s) whose strength was not notable during much of last million years being responsible for the observed global temperature rise. Anthropogenic GHG, not present in strength except during last few hundred years, certainly seem like a worthy candidate.
As to whether the theory can be used for support by skeptics, it does not seem that way. But so what if it could? How a theory might be used is not a measure of the merit and validity of the theory. Rather, if a sound theory can be used to support a position not to one's liking, it is reason to adjust one's liking, not reason to dismiss the theory. [/quote]
ok. Its strange you say that, because the Milankovitch Hypothesis dosen't support human iduced warming as stated in your first post. Its support "insolation changes arising from variations in the Earth’s orbit."
So you have used a example showing there is minimal human iduced warming to support the claim that there is massive human induced warming.
I would say that this hypothesis supports my claim more so than yours.
The hypothesis also states that;
Quote:This implies only a secondary role for CO2 – variations in which produce a weaker radiative forcing than the orbitally-induced changes in summertime insolation – in driving changes in global ice volume.
I still can't find the part where it states that "climate change at this time should be going in the opposite direction" in this paper.