«On the other hand, the long - term trend in NH is relatively robust to the inclusion of dendroclimatic indicators in the network, suggesting that potential tree growth trend biases are not influential in the multiproxy climate reconstructions.» (johnquiggin.com)
MBH98 stated that «the long - term trend in NH is relatively robust to the inclusion of dendroclimatic indicators in the network», apoint made even more forcefully in a note to Mann et al 2000, which stated:» Whether we use all data, exclude tree rings, or base a reconstruction only on tree rings, has no significant effect on the form of the reconstruction for the period in question. (climateaudit.org)