With an atmosphere 95% CO2, it should be a really balmy place!

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The long-term trend of Arctic sea ice volume is clear:’
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Where does Anthony Watts dispute the long term trend of Arctic sea ice volume?
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It’s clear that David Appell is misleading!

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P. Köhler, R. Bintanja, H. Fischer, F. Joos, R. Knutti, G. Lohmann, and V. Masson-Delmotte, “What caused Earth’s temperature variations during the last 800,000 years? Data-based evidence on radiative forcing and constraints on climate sensitivity”, Quaternary Science Reviews, vol. 29, pp. 129-145, 2010. http://dx.doi.org/10.1016/j.quascirev.2009.09.026

That paper is highly speculative.

Natural climate variations during the Pleistocene are still not fully understood. Neither do we know how much the Earth’s annual mean surface temperature changed in detail, nor which processes were responsible for how much of these temperature variations.

In their conclusions:

In its global and annual mean view our approach has certainly its limitations. Especially spatially highly heterogeneous processes such as cloud cover, mineral dust loading in the atmosphere, and vegetation-albedo forcing can only be roughly estimated and seasonal variability cannot be addressed at all (Braconnot et al., 2007b). The state dependence of feedbacks is poorly understood (Hargreaves et al., 2007) and the problem of efficacy of different forcings (e.g. Hansen et al., 2005) is neglected.

they sum up quite well. File thirteen material.

Did you actually read this paper?

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the heat-trapping ability of CO2

Please direct us to the experimental science which demonstrates this “heat-trapping”, David.

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Also, the continents were in much different places then, which means the Earth had a different albedo.

The oceanic surface area (OSA) and land surface area (LSA) have maintained a pretty constant ratio over the last 500 million years. You can see the continental arrangement here. All which seems to be missing is Guatemala, Nicaragua, Sarawak and the Kamchatka Peninsula. But then, they don’t even make up 1% of the LSA and they were formed from volcanic action.

The planet surface area is over 70% ocean and less than 30% land. The only thing affecting albedo to any greater extent is ice coverage. And there was very little of that back then.

So I would be interested to find out how different rearrangements of the continents affect albedo …

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ummmm…. I think Blib’s post WAS him trying to be funny !

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But, I don’t like Rhubbarb, horrible red stuff that leaves a nasty stain behind it…..

Are you rhubarb? The description fits.

(thought I’d correct your spelling)

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You freely censor anything that you feel threatens your cosy little vacuum. [snipped]

[This blog is not the place for name-calling please stay on topic - Mod]

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I feel bound to point out that you have some notoriety on the web, gained in part by forcing your personal views on others, contrary to what they honestly and professionally believed to be true. Not only that, you did it in a way that brooked no discussion or argument. In short you acted in a boorish, arrogant and insulting way, and in so doing, brought all of Wikipedia into disrepute, changing it from being seen as a useful source of information, to one of dubious quality.

People were offended by that. People remember. And people no longer trust you, or what you say. Some people go so far as to think that you pollute whatever forum you happen to visit.

So when you come here, being arrogant, boorish, insulting, and failing to respect others, they remember, and treat you accordingly.

The Web does not forget. You have a stigma that you will carry for the rest of your life. The only hope you have, is to show some humility, but nobody is placing bets that you will succeed.

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You’ve had precisely one comment “censored” at my blog, and that comment is so rude that the mods here won’t allow it to be even partially repeated in a link.

Your complaints are imaginary.

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