2007: Phil Jones says it's important "not to cling to outdated concepts of the past such as the MWP and LIA" [Medieval Warm Period and Little Ice Age]

2007 ClimateGate email

It is important to learn about past climate change, especially over the past 1000 years, but it is even important to use new and improved evidence from proxy sources (i.e. not to cling to outdated concepts of the past such as the MWP and LIA). How can we ever hope to progress if we have conform to incorrect concepts? On the early mid-20th century warming - look at the figures in Ch 9. The decrease from 1940-75 didn't happen if you look at global records. MBH was published in 1998 and wasn't just a tree-ring study. [Phil Jones]