
A Bayesian Analysis of the Solar Cycle Using Multiple Proxy Variables 595
0 50 100 150 200 250
0 1000 3000 5000
SSNs
sunspot areas
0 50 100 150 200 250
1000 2000
Observed Proxy Data
SSNs
10.7cm flux
0 1000 3000 5000
1000 2000
sunspot areas
10.7cm flux
−1 0 1 2 3
−1 0 1 2 3
y
~
1
: SSNs
y
~
2
: sunspot areas
−1 0 1 2 3
−2 −1 0 1 2
Transformed Proxy Data
y
~
1
: SSNs
y
~
3
: 10.7cm flux
−1 0 1 2 3
−2 −1 0 1 2
y
~
2
: sunspot areas
y
~
3
: 10.7cm flux
−1 0 1 2 3
−2 0 2 4
y
~
1
:
SSNs
G(Y)
−1 0 1 2 3
−2 0 2 4
G(Y) vs. Transformed Proxy Data
y
~
2
: sunspot areas
G(Y)
−2 −1 0 1 2
−2 0 2 4
y
~
3
: 10.7cm flux
G(Y)
FIGURE 28.4
Transforming the proxies. The top row displays the two-dimensional scat-
terplots ...