According to the newly updated model, a three-degree rise in global temperatures-something that would happen as early as 2050-effectively reverses the carbon cycle. Instead of absorbing CO2, vegetation and soils start releasing it in massive quantities, as soil bacteria work faster to break down organic matter in the hotter environment, and plant growth goes in reverse. So much carbon pours into the atmosphere that it pumps up atmospheric concentrations by 250 parts per million(ppm) by 2100, giving a further 1.5^C boost to global warming.
PrestonSturges wrote:When are we projected to double CO2 concentrations? We're up about 40% already. I'm skeptical that we'll actually be able to scrape up enough hydrocarbons for a 100% increase.
Loki wrote:We will burn it all as quickly as we can, coal, the tar sands, NG, shale, everything.
The only thing that will stop us will be slamming face first into either an economic wall or an ecological wall. I'm hoping it'll be the former, but I suspect the latter is more likely.
It's occurred to me in my darker moments that maybe those of us concerned about ecological collapse should do our best to accelerate economic collapse in order to stave off the worst of the environmental disaster on our horizon. Perhaps vote Republican?
Selco wrote:Yes we had some trees in my city, parks, fruit trees, but most of the city is building and houses but belive me all trees in the city is going to be burned very fast when you dont have eletricity for cooking and heating. After that all what you have is furniture, doors, wooden floors… (and belive me that stuff is burning too fast)
Three degree raise in temps will result in a return to temps last seen three million years ago during the Pliocene Era.
last time the earth was 4 degrees warmer, there was no ice at either pole.
2) By the time we reach 7 C vast swaths of the most populated places on the planet, such as much of the east coast of the US and China, become uninhabitable because the combination of heat and humidity becomes more than the human body can cope with--people cook in their own skins.
<3 degrees rise results in >The end of the Amazon as a rain forest, which would then result in a Savannah type grassland ecological environment instead.
meemoe_uk wrote:Oh, and all of the fossil and sediment record shows the world was a very nice place to live when it was 6C warmer. Much less desert. Much more forest and grasslands.
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