Quote:
Originally posted by Biggles@13 January 2004 - 18:18
Providing one doesn't think the Earth is 6000 years old and is going to end next Tuesday, my view is the following.
Looking back over the history of the Earth it does not take much to discern that climate fluctuates wildly. We have have been living in a warmer inter-glacial period. During these perids, which geologoically are quite short, the temperature can rise quickly and, in previous inter-glacials, higher temperatures than we have now were reached (usually prior to turning very nippy indeed).
So what does it mean for us? Well carbon emissions could speed up what is a natual process and we certainly have emitted a lot of carbons into the atmosphere. So controlling our pollution could slow things down
On the other hand we could just be going into a natural phase and there is damn all we can do about it.
Sea levels between full ice age and the warmest periods vary by hundreds of feet. There was not much of a North Sea during the last ice age and no Mediteranean or Black Sea. As temperatures rise further sea levels will rise but bear in mind most of the rising has already occurred. However, if you live by the sea, as I do, this is little comfort; 30 feet and I will be growing sea weed not shrubs.
It will not end civilisation and it is not entirely clear who will be winners and who will be losers if things do get warmer. Records suggest that a warmer world is good news for the UK, back in the 11th century we had vineyards as far north as York. Far worse than a warm world, would be a return to an ice age which would not be good news for the developed world. A cooler world would be ok for North africa and the ME which no doubt would go back to being the cradle of civilisation.
I believe the evidence is there to say we are entering a warm phase. Time will tell if this is a temporary fluctuation or one of Earth's longer transitional phases - if it is the latter we may never know to what extent we caused it, but those who predicted it will get the kudos anyway :)
Skimming through the posts above I saw a comment that cows emit more methane than cars - I should hope so too. If cows start emitting carbon monoxide from their rears the world will have come to a pretty pass. :blink: