(a)
(b)
(c)
(d)
Figure 6:
Partial correlation coefficient for cyclone frequency versus ENSO (excluding IOD) for SH Winter (JAS). Correlation (shaded), 2-Tail 90% significance (hatched) for (a) NCEP1_5801, (b) ERA40_5801, (c) NCEP1_7910, and (d) NCEP1_5078.