Monckton comments at Carbon Brief:
I have long been impressed by Professor Lindzen’s willingness to confine his presentations to the science and to avoid making policy statements. The various scientific campaigners in the UK on the climate issue who have challenged his presentation in a rather bad-tempered and unscientific manner have not really understood his central objection to the high-climate-sensitivity case, which is that the temperature feedbacks which the IPCC and its adherents assume must be strongly net-positive cannot in fact be strongly net-positive, for otherwise violent oscillations either side of the singularity in the feedback-amplification equation would have occurred at some time in the past 50 million years, but the paleoclimate evidence is that such violent oscillations have not occurred…