Other attempts to extract temperature info from a matrix of tree ring chronologies using a statistical fitting procedure have to pass statistical tests benchmarked with reference to the characteristics of the specific data set being studied. (climateaudit.org)
People have written theses about how to construct tree ring chronologies in order to avoid end - member effects and preserve as much of the climate signal as possible. (realclimate.org)
This was based on research by Baillie and McAneney (2015) which compared the spacing between frost ring events (physical scarring of living growth rings by prolonged sub-zero temperatures) in the bristlecone pine tree ring chronology, and spacing between prominent acids in a suite of ice cores from both Greenland and Antarctica. (realclimate.org)