in the 70s there were crisis talks and worldwide panic because the global temperature was dropping, they were scared another ice age was on the way. and what was causing this drop in temperature? that's right, carbon emissions and holes in the ozone layer. People quickly forget these things. its the same old stuff rejumbled for a new generation, and we're all too happy to swallow it.
erm what was causing it was largely particulate emmissions particularly sulphur that were causing a global dimming phenomenum where a significant proportion of the suns light and heat was getting reflected before it reached the earths surface. Since all the efforts in the 70's, 80's and 90's to reduce particulate emmissions, install desulphurisation scrubbers on power stations etc this effect seems to have levelled off and begun falling from the late 80's. These particulate emmissions were related to fossil fuel burning, but it's not true to say that it was co2 that was causing it, and i doubt any scientists at the time would have been saying that either.
Ozone is a greenhouse gas causing between 3-7% of the greenhouse effect, so it follows that if we'd carried on destroying the ozone layer this would presumably have had a negative impact on temperatures, though this would have been relatvely minor compared to the increases in skin cancer that would also have resulted.
Yeah, it's happening faster, but that doesn't prove it's us. The earth is erratic, when it does warm and cool, it does so erraticly, like what's happening to the earth now.
This quest for "proof" always perplexes me; there's no absolute proof that the Earth's gravitational pull always holds, but you ain't going to jump off a skyscraper are you? You can only go on the evidence available, and, similarly to gravity, the global warming evidence is pretty conclusive.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.