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Feedback loops, Human intervention in carbon cycle transfers to mitigate…
Feedback loops
Carbon cycle
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CC increases wildire chance => wildfires release carbon in plants as GHGs (bio-atmo) => GHGs increase CC => more wildfires happen
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Higher CO2 levels and temps increase photosynthesis => more phytoplankton/plant growth globally => more CO2 taken out of atmosphere => CC slowing and eventually reversing to pre-warming levels => plant growth back to normal
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Water cycle
Ice melts bc CC => less albedo effect => more energy absorbed => increased warming => more ice melts
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On geological scales: CO2 absorbed by condensed water (cloud) forming carbonic acid => acid rain dissolves silica rocks and forms carbonates => runoff takes these to ocean => marine organisms build shells and bodies with calcium carbonates (release a third of CO2 to atmos) => organisms die and build up on ocean floor => stores carbon on tectonic plates
In times of more CO2 => more global warming => more acid rain and weathering => more runoff and storage in ocean
Ocean acidification: sudden increase in atmos CO2 bc humans => much more atmos-ocean diffusion of CO2 => ocean becomes 26% more acidic (8.15-8.05pH) and less carbonates => more difficult for marine organisms to build shells + coral reefs hard=> endangers marine ecosystems + the more carbon in the ocean, the less it can absorb
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Mitigation involves:
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- Using clean energy sources
- Changing people's behaviour
- Making older technology more energy efficient