From what I have read about dendrochronology the age of the tree is not taken into account when looking at tree rings. The assumption is that the ring size is dependant only on climate and it is valid to compare the width of a 10 year ring with that of a 100 year old ring. However, the question I am trying to answer is that given a constant climate - that is the same climate every year is there a variation of ring size throughout the lifetime of a tree? Would a ring from a 10 year old tree be the same width as one from a 100 year old tree if the trees were in identical climates and situations? Alternatively do younger trees make bigger rings than older trees?