hansen's 1988 results are evidence that the actual climate sensitivity is about 3°c for a doubling of atmospheric co2.
hansen's 1988 results are evidence that the actual climate sensitivity is about 3°c for a doubling of atmospheric co2.
climate sensitivity:58
for constant humidity they computed a climate sensitivity of 2.3 °c per doubling of co2 (which they rounded to 2, the value most often quoted from their work, in the abstract of the paper).