Michael Mann cherry picked his dendrochronological data. So do others. Such studies conflate temperatures with moisture and are unreliable. Then there is the effect of aboriginal fire, and there isn't a single tree ring study out there that accounts for it.
Sorry. We were neighbors of Professor Douglass. We grew up in the shadow of his tree slices.
What makes you think there is no causal correlation between teperature and moisture? Have you not been reading about Patricia?