The temperature trend of ground readings (especially because of unreliable ocean surface measurements) should not be (mis)used as a “proof” for the correctness of the highly erroneous CO2 sensitivity parameter on which the IPCC model results are based on. A considerable part of the observed ground warming has to be allocated to amplification of solar forcing (via cloud coverage), as well as to urban heating and forest clearing (i.e. reduction of evaporation)