Table 3: Six, nine and twelve month correlation coefficients for an 96 case sub-sample from each prediction system. The sub-sample is for forecasts initialized each month of each year 1982, 1983, 1984, 1986, 1987, 1988, 1989 and 1991. The 99% confidence interval is shown in bold.
Forecast System 6 Month CC 9 Month CC 12 Month CC
Consensus 0.874 ± 0.09 0.815 ± 0.13 0.725 ± 0.17
LDEO1 0.656 ± 0.20 0.610 ± 0.21 0.473 ± 0.26
LDEO2 0.792 ± 0.14 0.701 ± 0.18 0.661 ± 0.20
UOX 0.744 ± 0.16 0.597 ± 0.22 0.451 ± 0.26
SIO 0.695 ± 0.18 0.664 ± 0.20 0.638 ± 0.20
COLA 0.696 ± 0.18 0.660 ± 0.20 0.551 ± 0.24
NCEP 0.787 ± 0.14 0.688 ± 0.19 0.475 ± 0.26
LIM 0.711 ± 0.17 0.596 ± 0.22 0.464 ± 0.26