- those compiled from direct instrumental measurements of land and ocean surface temperatures such as the CRU, GISS and NOAA data sets; and
- historic temperature reconstructions from measurements of 'proxies', for example, tree-rings.
The Institute of Physics
The Institute of Physics is clearly responding more rationally to events regarding the scientific conduct of many major proponents of catastrophic man-made global warming than is the American Physical Society. I am very disappointed yet in the American Physical Society's response to more than 250 present and past members of that society for a review of its thoughtless backing of catastrophic AGW back in 2007. I will be discussing this more in the future.