And what portion of this chart is instrument data? Anything you'd be interested in if you were looking at Holocene data?
As for your WUWT arrticles criticizing the work of Shakun, I strongly suggest you look up the qualifications of Willis Eschenbach, their author.
Willis Eschenbach
Credentials
- California Massage Certificate, Aames School of Massage, Oakland, CA. (1974).
- B.A., Psychology, Sonoma State University, Rohnert Park, CA. (1975).
- “Curriculum Vitæ: Willis Eschenbach” (.doc). Retrieved from apple.com MobileMe.
and
Willis Eschenbach, B.A. Psychology, Sonoma State University (1975); California Massage Certificate, Aames School of Massage (1974); Commercial Fisherman (1968, 1969, 1971, 1979, 1980, 1981, 1982, 1983, 1984, 1994, 1995); Auto Mechanic, People's Garage (1969-1970); Cabinet Maker, A.D. Gibson Co. (1972); Office Manager, Honolulu Emergency Labor Pool (1972); Construction Manager, Autogenic Systems Inc. (1973); Assistant Driller, Mirror Mountain Enterprises (1975-1976); Tax Preparer, Beneficial Financial Company (1977); Accountant, Farallones Institute (1977-1978); Peace Corps and USAID (1982, 1983, 1984, 1985, 1987, 1993, 1994); Cabinet Maker, Richard Vacha Cabinets (1986); County Director, Foundation for the People of the South Pacific (1986-1988); General Manager, Liapari Limited (1989-1992); Regional Health Coordinator, Foundation for the People of the South Pacific (1994-1995); Project Manager, Eschenbach Construction Company (1995-2003); Construction Manager, Koro Sun Limited (1999); Construction Manager, Taunovo Bay Resort (2003-2006); Accounts/IT Senior Manager, South Pacific Oil (2007-2010); House Carpenter (2012-Present)
Popular Technology.net: Who is Willis Eschenbach?
and now for Jeremy Shakun, Asst Professor of Paleoclimatology at Boston College
EDUCATION
And Shaun A Marcott, Assistant Professor of Paleoclimatology at the University of Wisconsin - Madison
Marcott's two works on Holocene temperature reconstruction have a total of 1,326 citations. Shakuns six published papers on Holocene temperature reconstructions have netted 3,666 citations. I suspect you're not familiar with a citation. These are the number of times these works have been used as references in other published papers. So, if you think Shakun and Marcott have been discredited, the science community seems to be completely unaware of it.