Atmospheric analysis

Estuaries are at the bottom of the freshwater drainage network and, effectively, are a part of it.

There are two species of kōura or freshwater crayfish in Aotearoa.

Methane (CH4) is the second most important greenhouse gas after CO2 that is produced by human activities.

Waterways can easily become contaminated by pathogens when effluent is discharged nearby.

The Statement of Core Purpose spells out why the Government owns Crown Research Institutes and what it expects from them.

As much of this climate zone is sheltered by high country to the west, south and in some areas to the east, it is the sunniest region of New Zealand.

NIWA collects wave data, develops and verifies wave forecasting systems, and is developing and producing wave projections.

The Standardised Precipitation Index (SPI) is a simple measure of drought (and also of very wet conditions) and is based solely on the accumulated precipitation for a given time period.

NIWA's educational resources and scientific data are tools for young people to learn about science.

Seasonal climate summaries from summer 2001 to the present.