IPCC 1990 fig 7.1.c
stoat | June 7, 2010Thanks to J who alerts me to this little matter. So, this is all mostly summarised in [[Description of the Medieval Warm Period and Little Ice Age in IPCC reports]]. From which I reproduce:
A schematic (non-quantitative) curve was used to represent temperature variations over the last 1000 years in chapter 7. The vertical temperature scale was labelled as "Temperature change (°C)" but no numerical labels were given; it could be taken to imply that temperature variations of the MWP and LIA were each of the order of 0.5 °C from the temperature around 1900. The section specifically states…