claim: The original global temperature schematic which appeared in the IPCC First Assessment Report and seemed to show the Medieval Warm Period ( MWP ) hotter than Present was based on the central England temperature record, and ended in the 1950s.
evidence: However, that view was questioned by other researchers; the IPCC First Assessment Report of 1990 discussed the Medieval Warm Period around 1000 AD ( which may not have been global ) and the Little Ice Age which ended only in the middle to late nineteenth century.