Atmospheric analysis

An interactive guide to the sponges of New Zealand.

Climate data and common terms explaining the causes and effects of climate change.

This is the standard precision instrument NIWA uses throughout New Zealand in the National Climate Network, and elsewhere, for rainfall measurement.

This Statement of Corporate Intent (SCI) sets out NIWA's strategy for delivering against its core purpose over the next five years.

This identification guide covers the common crustose coralline algae found in central New Zealand.

Tuna or freshwater eels are a very significant, widely-valued, heavily-exploited, culturally iconic mahinga kai resource.

Station height is in metres above mean sea level. Years of data are the number of complete years of data for the 1981 – 2010 period.

Find out more about submerged aquatic plant species.

Sheltered by high country to the west, the eastern zone of the North Island enjoys a dry, sunny climate.