Keith R. Briffa
Quaternary Science Reviews 19 (2000) 87-105
Data for Figure 1
Caption.
Northern 'high-latitude' temperature changes over the last 2000 years. The curves show selected reconstructions of summer (annual series
a + d) temperatures or temperature-sensitive tree-ring chronologies: (a) Mongolia (Jacoby et al., 1996a); (b) Eastern Siberia (Hughes et al., 1999);
(c) eastern Canada (Luckman et al., 1997); (d) North American tree line (D'Arrigo et al., 1992); (e) Northern Sweden (Grudd et al., 1999) with a shorter
density-based temperature series superimposed as thin line (Briffa et al., 1992); (f) western Siberia (Hantemirov, 1998 reprocessed) with a nearby
density-based temperature series for the northern Urals (Briffa et al., 1995); (g) Central Siberia (Naurzbaev and Vaganov, 1999). All series are plotted
as normalised values smoothed with a 50-year low-pass filter. The bottom curve is the average of the other data sets after rescaling to give equal mean
and variance (over the common period 1601-1974), also plotted as 50-year smoothed values.
Graph available as
GIF (48kb),
PostScript (122kb) and
PDF (66kb).
Data available as Excel-97 spreadsheet (708kb)
and Comma-separated values (300kb)
2003-10-28: corrected to swap chronology/reconstruction labels for E and F