A recurring question which was asked again on at Eurotrib: in the Wikipedia spaghetti graph, how many of the spaghetti strands are from the Hockey Team? I guess it depends how you define the "Hockey Team". Almost exactly one year ago, I posted up the following listing http://www.climate2003.com/blog/hockey_team.htm of who I thought was on the Hockey Team (without prior reference to the Wikipedia spaghetti graph) and virtually every spaghetti strand is from authors who appeared to me as part of the Hockey Team. My perception was based on direct connections through coauthorship with the strongest weight being given to coauthorship of a multiproxy study and secondary weight to coauthorship of other articles (without attempting to make an exact formula).
Here is a listing of Wikipedia reconstructions with comments.
|1. (dark blue 1000-1991): P.D. Jones, K.R. Briffa, T.P. Barnett, and S.F.B. Tett (1998). The Holocene 8: 455-471.||Jones and Briffa are core Hockey Team|
|2. (blue 1000-1980): M.E. Mann, R.S. Bradley, and M.K. Hughes (1999). Geophysical Research Letters 26 (6): 759-762.||obvious|
|3. (light blue 1000-1965): Crowley and Lowery (2000). Ambio 29: 51-54. Modified as published in Crowley (2000). Science 289: 270-277.||Crowley is core Hockey Team and used data supplied by Jones (not independently selected)|
|4. (lightest blue 1402-1960): K.R. Briffa, T.J. Osborn, F.H.
Schweingruber, I.C. Harris, P.D. Jones, S.G. Shiyatov, S.G. and E.A. Vaganov (2001). J. Geophys. Res. 106: 2929-2941.
|Briffa, Jones, Osborn, Schweingruber are core Hockey Team|
|5. (light green 831-1992): J. Esper, E.R. Cook, and F.H. Schweingruber (2002). Science 295 (5563): 2250-2253.||Cook, Schweingruber are core Hockey Team. Cook has also published articles with Jones and Briffa|
|6. (yellow 200-1980): M.E. Mann and P.D. Jones (2003). Geophysical Research Letters 30 (15): 1820. DOI:10.1029/2003GL017814 .||duh|
|7. (orange 200-1995): P.D. Jones and M.E. Mann (2004). Reviews of Geophysics 42: RG2002. DOI:10.1029/2003RG000143||duh|
|8. (red-orange 1500-1980): S. Huang (2004). Geophys. Res. Lett. 31: L13205. DOI:10.1029/2004GL019781||Huang was not in my listing. This goes back only to 1500; other borehole data shows an MWP|
|9. (red 1-1979): A. Moberg, D.M. Sonechkin, K. Holmgren, N.M. Datsenko and W. Karlén (2005). Nature 443: 613-617. DOI:10.1038/nature03265||Moberg was not in my list, but has co-authored with Jones. Moberg and Jones  is the reference for HadCRU2, the most recent CRU temperature compilation.|
|10. (dark red 1600-1990): J.H. Oerlemans (2005). Science 308: 675-677.
|Oerlemanns was not in my list, but this only goes back to 1600.|
I’ve discussed most of these studies in various posts – see Categories in right frame. Aside from the overlap of authorship, there is the important overlap of critical proxies: bristlecones, Polar Urals, Dunde – which often contribute the entire MWP-modern difference in a given Hockey Team reconstruction. . For example, bristlecone/foxtails, an obviously compromised proxy, are used in MBH, Esper et al 2002, Mann and Jones 2003, Jones and Mann 2004, Crowley and Lowery and Moberg et al . Polar Urals, another compromised proxy, is used in Jones et al , MBH, Crowley and Lowery , probably Briffa et al  (the sites remain unlisted), Esper et al , Jones and Mann 2004, Moberg et al 2005.
Since Moberg was not on my initial list, it’s worth noting that he would not be regarded as “independent” of Jones and Briffa, just by looking at the following overlaps in the list of articles attributed to him at the CRU listing:
Jones, P.D. and Moberg, A., 2003
“Hemispheric and large-scale surface air temperature variations: an extensive revision and an update to 2001.” Journal of Climate 16, 206-223 American Meteorological Society (R)
Jones, P.D., Moberg, A., Osborn, T.J. and Briffa, K.R., 2003
“Surface climate responses to explosive volcanic eruptions seen in long European temperature records and mid-to-high latitude tree-ring density around the Northern Hemisphere.”
In: Volcanism and the Earth’s Atmosphere (A. Robock et al., Eds.). American Geophysical Union, Washington, D.C.
Yan, Z., Jones, P.D., Davies, T.D., Moberg, A., Bergstrom, H., Camuffo, D., Cocheo, C., Maugeri, M., Demaree, G.R. and six others, 2002
“Trends of extreme temperatures in Europe and China based on daily observations.”
Climatic Change 53, 355-392 Kluwer Academic Publishers. (R)
Jones, P.D., Briffa, K.R., Osborn, T.J., Moberg, A. and Bergstrom, H., 2002
“Relationships between circulation strength and the variability of growing-season and cold-season climate in northern and central Europe.”
The Holocene 12, 643-656
Yan, Z., Jones, P.D., Moberg, A., Bergstrom, H., Davies, T.D. and Yang, C., 2001
“Recent trends in weather and seasonal cycles – an analysis of daily data for Europe and China.”
Journal of Geophysical Research 106, 5123-5138
Camuffo, D., Demaree, G., Davies, T.D., Jones, P.D., Moberg, A., Martinec, J.M., Cocheo, C., Maugeri, M., Thoen, E. and Bergstrom, H., 2000
“Improved understanding of past climatic variability from early daily European instrumental sources (IMPROVE).” In: Proceedings of the EC Climate and Environment Conference, Vienna, 19-23 October 1998. CDROM, EC Research DG, Biodiversity and Global Change Unit DI/1, Rue de la Roi, 200-B-1049 Brussels, Article No. 162, 8pp
Moberg, A., Jones, P.D., Barriendos, M., Bergstrom, H., Camuffo, D., Cocheo, C., Davies, T.D. and others., 2000
“Day-to-day temperature variability trends in 160-to-275 year long European instrumental records.”
Journal of Geophysical Research 105, 22849-22868 (R)
Moberg, A., Jones, P.D., Barriendos, M., Bergstrom, H. and 8 others including Davies, T.D., 2000
“Daily temperature variability trends in 200-year long European instrumental records.”
Journal of Geophysical Research 105 (D18), 22849-22868
From this, it loooks like Moberg is a protegé of Jones. In other circumstacnes, they might even have put Jones on the masthead of Moberg et al  (and I’ll bet there’s correspondence about this) and they decided to leave Jones off the masthead to make it look more independent. Maybe not, but Moberg doesn’t seem very “independent” to me.