13.7 Consequences for Arctic sea ice

no perceptible response for the last decades to strongly accelerating anthropogenic forcing. 12h. The available evidence can only support a higher sensitivity to increased CO2 in the cryosphere, limited by its sensitivity to the increase in light-absorbing particles. Both are driving unusual melting and a small long-term sea level rise acceleration. The rest of the planet shows a lower sensitivity, indicating a negative feedback by H2O, that prevents CO2 from having the same effect elsewhere. 12i. Global warming attribution interpretations based on temperature rate of change point to solar activity as the main cause of Modern Global Warming, with a significant contribution from GHGs only in the latter part of it.

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