Quote:
Originally Posted by rahl
It's worthless date in the sense that you can't measure climate in any way except over a period of hundreds of years. I don't care if there were record highs every day for a decade, that means nothing. The Earth may be warming up a bit and the ice shelves melting, but the debate is over natur or man made. There hasn't been nearly enough time for us humans to have affected the climate in any measureable way. After a few hundred years, then we will have some idea whether we have or not
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In a hundred years, we might be living in Alaska, Russia, Canada and Greenland. But how many people would die out if climate change happens in 10 years instead of 100? We wouldn't be able to build enough infrastructure to feed and house a billion people up there. The other possibility is that places like Ohio would have our summer temps during Nov-April. The rest of the year might turn this place into a desert, but we could still grow food here. But that would be a really bad situation and I'm not sure if anything like that would happen. But if it did, we would have to worry about having enough plant material producing O2 for use to breathe (if everything from 45 degrees latitude N to S became a desert).
It doesn't matter if it is Sun spots that increase temperatures, mega volcanoes, or CO2 emissions (breathing or burning fossil fuels) from man. The Sun spots have been down in the past few years, but the 11 year or so cycle is starting up again. The worry I have is what if CO2 acts as a multiplier. As well as the fact that liquid water absorbs a lot more solar energy than white snow and ice. And the melting fresh water will be 'lost' when mixed with salt water.