Changes

Personally, I think that the tree ring records should be able to reproduce the instrumental record, as a first test of the validity of this proxy. To me it casts doubt on the integrity of this proxy that it fails this test.

Personally, I think that the tree ring records should be able to reproduce the instrumental record, as a first test of the validity of this proxy. To me it casts doubt on the integrity of this proxy that it fails this test.

Sincerely, Jeff [Severinghaus]}}

Sincerely, Jeff [Severinghaus][http://tomnelson.blogspot.com/2012/01/why-did-trees-allegedly-stop.html]}}

==Ice Cores==

==Ice Cores==