Tag Archives: urals

Polar Urals #3: Crossdating

Apr 5, 2005 – 8:20 AM

The three cores which account for 1032 being the "coldest" year of the millennium are 862450, 862470 and 862030. One other core (862460) is dated to the late 10th and early 11th century and contributes to early 11th century "coldness". The placement of these 4 cores has to be interpreted from the ring width information […]

By Steve McIntyre | Posted in Jones et al 1998, Multiproxy Studies | Also tagged | Comments (18)

Polar Urals #2: Broken Core

Apr 4, 2005 – 4:53 PM

The tree ring dataset for the critical Polar Urals site has gaps of up to 59 years, has cores with as many 7 breaks in them. The problems are so pervasive that COFECHA testing simply fails – an almost unprecented occurrence in a tree ring data set.

By Steve McIntyre | Posted in Jones et al 1998, Multiproxy Studies | Comments (6)

Polar Urals #1

Apr 4, 2005 – 1:34 PM

The Polar Urals site is a staple of multi-proxy studies. The Briffa et al. [1995] version is used in Jones et al [1998], MBH98, MBH99, Briffa et al. [2001] and most recently Jones and Mann (2004). An earlier version by Graybill and Shiyatov was used in Bradley and Jones [1993], Hughes and Diaz [1994] and […]

By Steve McIntyre | Posted in Jones et al 1998, Multiproxy Studies | Also tagged | Comments (3)

Altitude at Briffa’s Polar Urals

Mar 28, 2005 – 4:42 PM

The Polar Urals tree ring site is another staple of multiproxy studies, being used in Bradley and Jones [1993], Hughes and Diaz[1994], Overpeck et al. [1997], Jones et al. [1998], MBH98, MBH99, Crowley and Lowery [2000], Esper et al. [2002], Bradley, Hughes and Diaz [2003] and Rutherford et al. [2005] (which recycles MBH98). In fact, […]

By Steve McIntyre | Posted in Briffa, Jones et al 1998, Medieval, Multiproxy Studies | Also tagged , , | Comments (2)