Figure A2.7: Relative sea-level trend (linear) for Auckland since 1899 (red), superimposed on the annual variability in the mean level of the sea (black), spliced with the predicted IPCC (2001) projections for global sea-level rise from 1990 up to 2100
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Text description of figure
This figure shows a comparison of measured sea-level for Auckland over the past 100 years, compared to the IPCC (2001) predictions for sea-level rise for the next 100 years (until 2100). Levels are normalised to the 1990 level.
The measured record shows a trend of sea level increasing about 0.16 metres over 100 years.
The IPCC projections are represented as a continuing, and accelerating, increase in level but showing diverging bands of uncertainty fanning out over the next 100 years.
The "most likely" mid-range band covers a range of 0.3 to nearly 0.5 metres sea-level rise above the 1990 sea level by 2100.
The "least likely" estimates for sea-level rise in the low band are 0.1 to 0.2 metres higher by 2100, and in the high band, 0.7 to 0.88 metres higher by 2100.
