Twenty -
year smoothed plots of averaged ring - width (dashed) and tree - ring density (thick line), averaged across all sites, and shown as standardized anomalies from a common base (1881 — 1940), and compared with equivalent - area averages of mean April — September temperature anomalies (thin solid line).
Figure 1: Twenty -
year smoothed plots of tree - ring width (dashed line) and tree - ring density (thick solid line), averaged across a network of mid-northern latitude boreal forest sites and compared with equivalent - area averages of mean April to September temperature anomalies (thin solid line).
Not exact matches
I
plotted the
Year 20 withdrawal amounts (in real dollars) using four year smooth
Year 20 withdrawal amounts (in real dollars) using four
year smooth
year smoothing.
They make a great deal of the fact that we only
plotted the ~ 50
year smoothed data rather than the annual means.
Because of the long time horizon, we will use cumulative
plots, which
smooth out the
year - to -
year fluctuations.
(Also suggested: Include on the
plot of the raw integral a 1
year boxcar -
smooth of the raw integral.)
When I
plotted this series
smoothing with a 30 -
year gaussian filter, I was unable to exactly replicate the uptick shown in this version.
I observed four significant peaks in the PSD of the SSN process at 10
years, 11.8
years, 10.8
years, and 131
years (unfortunately, the one at 131
years is obscured in the PSD I showed because I had to make the usual tradeoff between bias (resolution) and variance in my
plot, and I chose to present a
smoother version, the better to resolve the higher frequency peaks).