Wegmans wrote a report for the Congressional investigation into Mann's hockey stick. In it he pointed out the severe inbreeding of the authors who both produce and review Paleo reconstructions used to form the IPCC position. He especially recommended that climate science reach out to statisticians for help in their methods.
That hasn't happened.
Two egregious examples are the use of a five sigma outlier tree ring in a truncated cohort of less than one hundred samples, and the upsidedown use of a sediment proxy. Both were used by Mann, both were left uncorrected to contaminate following papers by authors using Mann as a reference.
Just how useful is a proxy that can be used upsidedown? Very. Mann's non tree ring paper fell apart without its inclusion, or with it used in the proper orientation.
The difficulties in getting the rebuttal of the upsidedown Tiljander proxy published is yet another black eye for pal review in climate science.
That hasn't happened.
Two egregious examples are the use of a five sigma outlier tree ring in a truncated cohort of less than one hundred samples, and the upsidedown use of a sediment proxy. Both were used by Mann, both were left uncorrected to contaminate following papers by authors using Mann as a reference.
Just how useful is a proxy that can be used upsidedown? Very. Mann's non tree ring paper fell apart without its inclusion, or with it used in the proper orientation.
The difficulties in getting the rebuttal of the upsidedown Tiljander proxy published is yet another black eye for pal review in climate science.