2005 email from warmist Overpeck to warmist Briffa: "am worried about the late 20th century "coolness" in the proxy recon that's not in the instrumental"

ClimateGate email

I'm still not convinced about the AO recon, and am worried about the
late 20th century "coolness" in the proxy recon that's not in the
instrumental, but it's a nice piece of work in any case.