Sentences with phrase «tree ring density at»

While tree - ring width in some places stops correlating with temperature after 1950, possibly due to moisture stress or changes in seasonality due to warming, tree ring density at the site studied continues to track temperature.

Not exact matches

As we shall examine shortly, the source of «the decline» come from temperature reconstructions calculated from tree - ring density at high northern latitudes (Briffa 1998).

The decline actually refers to a decline in tree - ring density at certain high - latitude locations since 1960.

Indeed, if we had two pools of tree rings / densities, from tree grown at two different altitudes, we could test the correlation of growth w.r.t. temperature.

For example, Schweingruber et al. (1993) showed that maximum density values were strongly correlated with April - August mean temperature in trees across the entire boreal forest, from Alaska to Labrador, whereas minimum and mean density values and ring widths had a much less consistent relationship with summer temperature at the sites sampled (D'Arrigo et al., 1992).