Sentences with phrase «northern tree ring density»
Not exact matches
Briffa, K.R., Osborn T. J., Schweingruber F. H., Harris I. C., Jones P. D., Shiyatov S. G., and Vaganov E. A. (2001) Low - frequency Temperature Variations from a Northern Tree - ring Density Network, Journal of Geophysical Research, 106, 2929 - 2941.
https://mpra.ub.uni-muenchen.de/
Briffa K.R., Jones P.D. and Schweingruber F.H. (1994) Summer Temperatures across Northern North America: Regional Reconstructions from 1760 Using Tree - ring Densities, Journal of Geophysical Research, 99, 835 - 25.
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).
Up until the 1960s, there is a very close correlation between the density of growth rings in trees in northern latitudes and summer temperatures, but after this it starts to break down.
In the northern Boreal zone, tree growth indicators (ring width, maximum density, annual height increment, minimum blue reflectance) suggest that growth during the 11th Century was almost as high as, and statistically indistinguishable from, tree growth during the 20th Century.
«new maximum - latewood - density (MXD) and tree - ring width (TRW) data from the Torneträsk region of northern Sweden»
This paper presents updated tree - ring width (TRW) and maximum density (MXD) from Torneträsk in northern Sweden, now covering the period ad 500 — 2004.
Instrumental temperatures (1871 - 1997) are in black, circum - Arctic temperature proxies [1600 - 1990, from (2 — Overpeck)-RSB- are in yellow, northern NH tree - ring densities [1550 - 1960, from (3 — Briffa et al 1998 (Nature); Briffa et al 1998 (Proc Roy Soc London)-RRB-, processed to retain low - frequency signals] are in pale blue, NH temperature proxies [1000 - 1992, from (4 — Jones et al 1998)-RSB- are in red, global climate proxies [1000 - 1980, from (5, 6 — MBH99)-RSB- are in purple, and an average of three northern Eurasian tree - ring width chronologies [1 - 1993, from (10 — Briffa et al 2000)-RSB- is in green.