/sci/ - Science & Math

Anonymous Fri Jan 20 15:14:34 2017 No.8617081 [View]
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>>8617012
>a very simple calculation

Radiative forcing by CO2:

∆F=5.35(W/m^2)*ln(C1/C0)
[IPCC TAR-06, page 358, Table 6.2]

∆T0=G0*∆F, G0=0.3K/(W/m^2)
[Kiehl, 1992; Shine et al., 1995]

C1=400ppm (2015)
[www.esrl.noaa.gov/gmd/ccgg/trends/]

C0=280ppm (1750)
[IPCC pre-industrial reference]

∆T0=0.57K warming attributed to CO2

Past natural fluctuations, not CO2:
LIA: ~-0.6K, MWP: ~+0.6K
[Loehle 2008, Ljungqvist 2010]

Warming started before the age of CO2

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/sci/ - Science & Math

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