claim: 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.
evidence: Both theory and climate models indicate that global warming will reduce the rate of temperature decrease with height, producing a negative lapse rate feedback that weakens the greenhouse effect.