Only
the longest measurement intervals include a major equity bear market.
Not exact matches
it seems to me that
measurement error on the left side of the graph (the
long interval) should have variance in error that reflects the residual error in each grid.
The accessibility of deep ocean heat to the climate system tells us that the equilibration time relevant to multidecadal climate sensitivity estimates is
longer than an
interval based on upper ocean
measurements, and so sensitivity will be underestimated if only the shorter
interval is used.
Leif: yes one can extend the solar cycles backwards BUT as you try to get data to compare it to you are stuck with data taken at
long intervals (like very 100 yrs), dating errors,
measurement problems, sedimentation discontinuities (the lake dries out or sediment slumps or is dug by an animal) and proxies of unknown validity (like tree rings which I do not believe are valid).