Sentences with phrase «ring response to climate»

I do not see the algorithms ordinarily used to extract the growth curve including any paramter that would account for the tree ring response to climate changing as the tree rings age..

They note, quite correctly, that the tree - ring response to climate changes much more dramatically between the two time periods than the density response.

Not exact matches

[Response: Since you mention Buntgen et al 2014 and the AD 774 event, I would also refer readers to our piece last year in Nature Climate Change, «Missing tree rings and the AD 774 — 775 radiocarbon event».

With respect to tree ring analysis, which is the basis for the vast majority of terrestrial reconstructions, the two most primary issues are (1) whether linear relationships between driver (climate) and response (ring characteristic) can in fact be assumed monotonic (usually, linearly so).

Climate response to the De Vries solar cycle in tree - ring chronologies over the past 2000 years.

[Joana Vieira, Filipe Campelo, Cristina Nabais (2008) Age - dependent responses of tree - ring growth and intra-annual density fluctuations of Pinus pinaster to Mediterranean climate.

Tree - ring information is available only in terrestrial regions, so is not available over substantial regions of the globe, and the climate signals contained in tree - ring density or width data reflect a complex biological response to climate forcing.

Although the existence of an upside down quadratic response to temperature has been known for a long time (e.g., Fritts 1976), current tree ring - based reconstructions universally assume that a linear approximation is not problematic, which is equivalent to the assumption that past climates do not deviate far from those in the calibration period, as will be shown.

A number of tree - ring chronologies have displayed anomalous growth or changed responses to climate forcing on different time scales in very recent decades (3 — Briffa et al 1998 (Nature), 9 — Jacoby and D'Arrigo 1995).