WOSG! I am disapointed! You are cutting and pasting from the good old CO2Science site! I had hoped that you were doing your own research. On the other hand at least if I know that your quotes come from CO2Science I know that there is bias in them!
Good night, until tomorrow.
"WOSG! I am disapointed! You are cutting and pasting from the good old CO2Science site!"
You have a problem with science not approved by the IPCC politburo?
Note these are Russian scientists, no ax to grind.
"What was done Whereas most boreholes do not exceed 1 km depth, which limits the length of the ground surface temperature history reconstruction by this method to only the last few centuries, the authors studied a borehole extending to more than 5 km depth, allowing them to reconstruct an 80,000-year history of ground surface temperature. This borehole was located in the Middle Urals within the western rim of the Tagil subsidence (58°24' N, 59°44'E)."
I'll state it plainly. A simple, single temperature timeline reconstruction over 80,000 years puts Mann's work and his easy-to-munge-into-your-preconceived-conclusions-PCA to shame. This is good work. If you reject it because your biases are not in accord with the views of those who point it out, well, there's not much for us to discuss.
There is plenty of climate data to keep you thinking whatever preconceived notion you want to think - as long as you ignore the 'other stuff' from those 'bad scientists' and 'bad websites'.