The Druids Grove

Fyyr wrote:We in the US have been conserving forests for over a 150 years. There are more trees now in North American than in human history on it. Any photos of wilderness areas taken 100+ years ago compared today confirms that.

Only a moron would believe this. Oh wait, Tudamurf showed you and you still didn't believe him. How do you live with yourself? And please tell me you haven't reproduced or are an educator of any sort...

Fyyr wrote:Also remember that the hypothesis for human-caused CO2 related climate change is based on the glass box model or the Venus model.

Actually the model is that the atmosphere is more transparent to some wavelengths of light and less transparent to others. The concentration of certain gasses like CO2 and CH4 makes the atmosphere slightly less transparent to low frequency light. This in turn means that infrared (heat) radiation finds it more difficult to escape the earth's atmosphere leading to a heating up.
The greenhouse model is only accurate in that the glass panels serve the same purpose to an extent (limit radiation leaving the building).

And secondarily, humans have already burned up more than half of the total world's supply of fossil fuel. It will become harder and harder to come by.

Several other gasses have a stronger heat trapping effect. They are not released by burning fossil fuels but are trapped in large quantities in the permafrost. Heating up much of siberia will release some of that.
Complicating factor is that higher temperatures will cause more water vapor in the atmosphere, aka clouds. This prevents some of the sunlight from reaching the atmosphere and has a dampening effect on the greenhouse effect. There is a theory that a prolonged period of high cloud cover is what kickstarts an ice age (assuming that it coincides with the sun producing less radiations for a extended period as well).

And I don't deny for one minute that the climate changes. It always changes, always has, and always will. Last year it was snowing into June and July, Silver Lake campground opened July 4th weekend with mucho snow still on the ground. This year? No snow. I just went up yesterday, great skiing, but not a lot of base. This has been one of the coldest and driest winters I can remember.

That is weather, not climate.


Eri

There are core samples of the time when homo habilis was evolving to homo erectus that the climate changed from wet and hot to wet and balmy on a thousand year cycle.

How did homo habilis cause this change, Eri?

That is weather, not climate.

How large of an area do you require before weather becomes climate, Eri?

Fyyr wrote:There are core samples of the time when homo habilis was evolving to homo erectus that the climate changed from wet and hot to wet and balmy on a thousand year cycle.

1) Those aren't on a "thousand year cycle", more like tens to hundreds of thousands of years.

2) They can be explained by astronomical changes (have you looked up Milankovitch's theory yet?)

(1) and (2) do not apply here.