[quote]Bill Roberts wrote:
You are quite incorrect. Actually the record of the last few hundred thousand years can leave little doubt that another Ice Age is, in the sense of geological time, at the door. What is unknown is whether we have already passed the peak global temperature of the current interglacial period, or whether it will be decades or centuries before average temperature goes irrevocably – or rather, for tens of thousands of years – downwards again.
CO2 always rises to levels such as this at the end of interglacial periods, regardless that man wasn’t there to put any in the atmosphere. Change in CO2 levels has also been shown to lag change in temperature: thus, it isn’t change in CO2 driving change in temperature (unless you believe in causation reaching from future to past) but rather change in temperature driving change in CO2. If one understands properties of gases dissolved in water this will not come as a surprise.
All this has happened before, and all this will happen again. Your idea that global cooling is only a blip and only has the cause you state is mistaken. Long term, it is an inevitable trend in the Earth’s climate. Short term, the idea that you present that man is the cause is also quite lacking. There are causes man can do nothing about.
Why don’t you try looking into how much money Al Gore is making from all this, and consider how incredibly profligate with fossil fuel he personally is, and see what that suggests? This is about power and money. It is not science. It is playing with computers in a manner that has absolutely zero integrity. In absolutely no other field that I know of would such models even be considered publishable except with very strong caveats clearly stated.[/quote]
You’re confusing two things:
The notion that, absent any human intervention, there would be a new ice age within the next few hundred thousand years. Virtually everyone agrees on this, it’s just not terribly relevant because a) we’re concerned about the world on a years-to-centuries timescale, not a millennia-to-eons timescale b) there is indeed human intervention.
The notion that, in the past few decades, there was a supposed scientific consensus that a human-created ice age was imminent, and that the invalidation of this “consensus” means that scientists can’t be trusted. As Alisa’s post above explained, this is totally false, and the idea was never widely accepted.
I’ve always found the denialist obsession with Al Gore to be kind of bizarre. Gore’s a smart guy, but he’s a layman, and it would be pretty weird if anyone relied on him for his original research. But no one does. He’s a good popularizer of science done by scientists, nothing more.