A new peer-reviewed scientific paper just came out arguing that a complete loss of Arctic sea-ice will have an equivalent warming impact to 25 years of global CO2 emissions (25 years x present emissions of 40 GTco2/year = 1 Trillion Tons of CO2). This 57 ppm increase of CO2 concentration equivalence causes a radiative forcing averaged globally of 0.7 W/m2, except it’s concentrated in the Arctic. As we have emitted 2.4 Trillion Tons of CO2 since the start of the industrial revolution, 1 Trillion Tons is HUGE, and will propel us like a ballistic missile to a much warmer world, miles above the 2 degree C Paris “safe level”.
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