You can see the video to get a full explanation, but in short, models that include high net positive climate feedbacks have to produce historical warming numbers that far exceed measured results. (climate-skeptic.com)
«Also, if the atmosphere isn't accumulating heat at the rate forecast by the models, then the theoretical positive climate feedbacks which were expected to amplify the CO2 effect won't be as large,» McNider said. (co2coalition.org)
We also know such positive climate feedbacks in forests are not confined to insect plagues only. (bitsofscience.org)