2 - Scientists post explanation, [uea.ac.uk] showing the deniers» allegations to be baseless (The «hidden» decline in tree ring growth was published a decade ago - see Nature link above; in this very
publication, it was shown to diverge from the
actual instrumental
record after 1960; so for the post-1960 period we basically replace tree rings with the
actual instrumental data, because we trust thermometers more than tree rings when the two fail to agree; we cited the relevant articles in the caption for the graph just to be sure).