Tag Archives: darrigo_2006

Rob Wilson and the Yamal Divergence

Apr 21, 2008 – 9:19 AM

The archived information for Wilson et al 2007 contains interesting new information on an unpublished West Siberian series (Putorama, 70 31 N, 92 57E). In this case, I was actually able to obtain a better correlation to gridcell temperature than the one reported by Rob by using a gridcell closer to the actual location. This […]

By Stephen McIntyre | Posted in Briffa, D'Arrigo 2006, Yamal and Urals | Also tagged , , , , , | Comments (27)

Wilson on Yamal Substitution

Feb 22, 2006 – 8:50 AM

Rob Wilson has written in sharply criticizing me (Yamal Substitution #3) for a lack of a balanced presentation on the Yamal substitution, and, in particular, for not acknowledging the "clear statistical reasons (related to variance changes through time)" that he had provided me offline for why D’Arrigo et al 2006 made the Yamal substitution. Also […]

By Stephen McIntyre | Posted in Briffa, Jacoby, Multiproxy Studies, Yamal and Urals | Also tagged , , , , , | Comments (40)

The Yamal Substitution

Feb 12, 2006 – 5:20 PM

The Polar Urals temperature reconstruction (Briffa et al, 1995) has been a mainstay of multiproxy studies. More data was collected at this site in 1998 (russ176), but in the two new studies (Osborn and Briffa, 2006; D’Arrigo et al., 2006), they relate their site selection to the Polar Urals, but substitute the Yamal RCS series […]

By Stephen McIntyre | Posted in Briffa, D'Arrigo 2006, Multiproxy Studies | Also tagged , | Comments (4)

D’Arrigo et al. on Bristlecone Calibration

Feb 11, 2006 – 8:23 AM

D’Arrigo, Wilson and Jacoby [2006] represents state-of-the-art in dendrochronology and is hot off the press. It is unique among such studies in using a considerable amount of up-to-date data and is relatively candid about its results. I’ll try to discuss it in more detail. Here I want to pick up on one issue that featured […]

By Stephen McIntyre | Posted in Briffa, bristlecones, D'Arrigo 2006, Multiproxy Studies | Comments (9)