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Fig.  S1. Calculated temperature profiles for 94% solar luminosity. Calculations were performed for fN2O =  0 and 30 ppmv, with fCH4 fixed at 100 ppmv.

Fig.  S2. Radiative forcing of N2O vs. N2O mixing ratio (ppmv) calculated using our climate model and the IPCC formula. The solar constant is set at present solar luminosity and CH4 is shown at 0 ppmv (A) and 100 ppmv (B).

Fig.  S3. Radiative forcing of CH4 vs. CH4 mixing ratio (ppmv) calculated using our climate model and the IPCC formula. The solar constant is set at present solar luminosity and N2O is fixed at 0 ppmv.

Fig.  S4. Radiative forcing of CH4 vs. CH4 mixing ratio (ppmv) calculated using our climate model and the IPCC formula. The solar constant is set at 86% present solar luminosity and N2O is fixed at 0.3 ppmv.

FilenameFormatSizeDescription
GBI_286_sm_FigS1.pdf91KSupporting info item
GBI_286_sm_FigS2.pdf90KSupporting info item
GBI_286_sm_FigS3.pdf88KSupporting info item
GBI_286_sm_FigS4.pdf89KSupporting info item

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