This indicator shows the level of acidification of New Zealand subantarctic waters within its exclusive economic zone.

Ocean acidification

This indicator shows the level of acidification of New Zealand subantarctic waters within its exclusive economic zone. The indicator measures the pH levels of the surface water. A decreasing pH represents increasing acidification of the oceans.

New Zealand’s subantarctic waters have become more acidic. The pH levels decreased by

0.0015
units per year between 1998 and 2016.

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