Thanks for the extra knowledge

From the video we can conclude that variations in growth for trees growing at lower altitude respond to variations in rain-fall. Prior to the period which can be checked by the instrumental record are low altitude trees the only method by which the growth behavior of high altitude trees, which is used as a proxy for temperature, can be evaluated?

thanx for posting so informative video. great work.

Thanks for the post does the tree that is being compared need to be from the same variety or does it matter. Also how far can the trees used in comparison be from each other miles or feet or further?

Thanks you sooooo much. This will really help me with my history project (i know, its meant to be science but i just go with the flow). :)

Genius! Thank you sir.

@Lordofultramar I agree, same here

Dendrochronology is pseudo-science. Tree-rings are also determined by microclimates, pests, rainfall, disease, and canopy cover - they are useless at determining temperature and climate. In addition, a single tree can have dramatically different ring-thicknesses in one section of trunk. The left side may have thick rings in a certain decade, while the right side has thin rings. So if you core the tree from the left the climate was warm, and if you core it from the right the climate was cold. Same goes for dendrochronology. If tree-rings are highly variable in one tree, and stands of trees are effected by local conditions, then how can you compare a ship’s timber with a reference bog-oak in Ireland, or a bristlecone in America? As I say - it is all bogus pseudo-science. It’s a joke. See my recent paleoclimate paper: Modulation of Ice Ages by Dust and Albedo. Ralph.