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Your CO2e GWP100 pulse SLR comparisons for CO2 and CH4 is novel and another demonstration of why high potency of CH4 and HFCs and other SLCPs on impacts need to be explicitly accounted for in time and not bundled as CO2e. If I'm interpreting correctly, 1 GtCO2 using GWP100 would be equivalent to about 36 MtCH4, which is about a third of the fossil methane emitted annually and about 10% of annual anthropogenic emissions. So, with 36 MtCH4 pulse in 2030 generating about 0.01 cm in 2050, 10 years of 360 MtCH4 per year would lead to about 1 cm of SLR in 2050? In comparison, 1 GtCO2 in 2030 would generate about 0.002 cm in 2050, so 10 years at 38 GtCO2 (GCB annual fossil CO2 in 2025) would be about 0.8 cm in 2050. Am I extrapolating correctly?

May 29
at
10:42 PM
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