Figure 3.6: Annual rainfall (as a percentage of that between 1951 and 1980) for the southwest part of the South Island, 1950–2006
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Text description of figure
This figure shows the year-to-year variability of annual rainfall, as a percentage of the average of 1951 to 1980 totals, for the southwest of the South Island for the period from 1950 to 2006. In the positive phase of the IPO (1978-1999) annual rainfall increased, while in the earlier negative phase of the IPO (1944-1977) rainfalls were generally lower than normal.
