"his [dr spencer's] latest research demonstrates that – in the short term, at any rate –  the temperature feedbacks that the ipcc imagines will greatly amplify  any initial warming caused by co2 are net-negative, attenuating the  warming they are supposed to enhance.
"his [dr spencer's] latest research demonstrates that – in the short term, at any rate –  the temperature feedbacks that the ipcc imagines will greatly amplify  any initial warming caused by co2 are net-negative, attenuating the  warming they are supposed to enhance.
climate change feedback:132
water vapor feedback is strongly positive, with most evidence supporting a magnitude of 1.5 to 2.0 w/m2/k, sufficient to roughly double the warming that would otherwise occur.