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lecture notes 2-21 carbon - Global industrial growth carbon...

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Prof. Tyler Volk – “Our Global Carbon Conundrum" A couple atoms of every breath you take go into every leaf interconnectedness Carbon exhaled into atmosphere, becomes part of barley plant, goes into beer, consumed by human, exhaled again into the atmosphere “cycle”, artwork that celebrates this cycle CO2 data from about 1960 on from Mauna Loa Observatory (NOAA) –steady increase(wavy line) South Pole data – about 1960 – not waving per year like Hawaii, but curves lie almost on top of each other going up at the same rate everywhere on the planet (ex. stirring in sugar, mixing hot and cold water doesn’t matter what country put that carbon in the air, it affects us all equally ) Calcium carbonate – southern cliffs of France (toolmaking, art, burial explosion 35ky) connection to archaeology. C atom in CaCO 3 wasn’t in atmosphere, “outside the active biosphere”, is washed away by rain and is now part of the active biosphere Biosphere is acting like a sponge and absorbing CO2 – good because its predictable (??/)
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Unformatted text preview: Global industrial growth carbon growth (tied to economy (?)) Year 2050 – 8-9 billion people Project into future – 43% per year CO2 being absorbed by atmosphere, people think that will stop with saturation 2050 Go into all-out effort to limit CO2 going into atmosphere? Holding emissions constant (“Confront Fossil Fuel”/decline in deforestation) – can actually decrease emissions “Central Trend” - still an improvement (talks fast, hard to understand… throws out a lot of numbers that don’t mean a lot but also has good real world examples to remind us (C atoms in 1 exhalation)) Even if we held today’s CO2 emissions constant, we’d still be a couple decades behind (a couple more decades of warming) because of time for ocean to cool?-Need a much more radical approach, only reducing fossil fuel, etc will work – trends diverge around 2050, that’s the critical time ( must be concerned now! ) – need technology to improve...
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