The astronomical theory and data compared - Ice Ages and Interglacials: Measurements, Interpretation, and Models - page 280

Table 10.2 provides a summary of the relationships between trends in
temperature over this time period and trends in yearly solar input at 65 N.
Table 10.2 shows that there tends to be a correlation (with some exceptions)
between the amplitude of solar variations and temperature as measured in
Antarctica. Temperatures do not increase or decrease in proportion to solar
input. Instead, temperatures rise when solar input oscillates with high amplitude,
and temperatures drop when solar oscillations are reduced in amplitude. Most
periods with high-amplitude swings in solar input tend to be associated with
higher temperatures and vice versa, although a few transitions do not fit this
description.

Table 10.2. Comparison of Antarctic ice core data with calculated yearly solar input at 65 N
over 800,000 years based on Figure 10.3 .

Transition Antarctica Solar input trend Comments

in Figure 10.2 temperature

1 Decreasing Decreasing oscillations Agreement

2 Increasing Increasing oscillations Agreement

3 Decreasing Decreasing oscillations Agreement

4 Sharp increase Increasing oscillations Agreement

5 Double peak Several high oscillations Rough agreement

6 Decreasing Decreasing oscillations Agreement

7 Slowly rising Slowly increasing oscillations Agreement

8 Decreasing Decreasing oscillations Agreement

9 Very sharp rise Very small increase in oscillation; Disagreement

trend slightly up

10 Strong decrease Decreasing oscillations Agreement

11 Very sharp rise Increasing oscillations Agreement

12 Strong decrease Not much change Disagreement

13 Sharp increase Large increase in oscillations Agreement

14 Decreasing Decreasing oscillations Agreement

15 Sharp increase Large increase in oscillations Agreement

16 Decreasing Decreasing oscillations Agreement

17 Sharp increase Small increase in oscillations Poor agreement