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Table 1.
Mean squared error of northern and southern polar field strength in cycles 21–24 in a simulation without additional active regions, a simulation including additional active regions with a lifetime limit of four days, and a simulation including additional active regions with a lifetime limit of seven days.
| 21N | 21S | 22N | 22S | 23N | 23S | 24N | 24S | |
|---|---|---|---|---|---|---|---|---|
| No additional AR | 12.6G2 | 11.0G2 | 22.6G2 | 29.6G2 | 6.3G2 | 7.6G2 | 0.7G2 | 2.1G2 |
| Lifetime limit 4 days | 13.2G2 | 12.2G2 | 18.7G2 | 20.1G2 | 4.0G2 | 5.0G2 | 0.5G2 | 1.0G2 |
| Lifetime limit 7 days | 15.2G2 | 13.0G2 | 16.7G2 | 15.7G2 | 3.1G2 | 3.7G2 | 1.1G2 | 1.0G2 |
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