Atmospheric analysis

Projections of how climate change is likely to affect New Zealand.

Tsunami is a Japanese word meaning great wave in harbour.

An illustrated example, showing how to input data and interpret SolarView results.

Common questions about clouds, how they are formed and how they behave.

View a collection of maps showing the impact of past El Niño and La Niña events.

Maps of average annual rainfall, temperature and other climate variables have been produced for all of New Zealand, based on the period 1981–2010.

New Zealand rushes (Juncus): species-level factsheets.

All species of freshwater tuna spawn at sea, although the spawning grounds of only four species are known with certainty worldwide.

NIWA has developed a real time UV display in consultation with the Cancer Society and Sunsmart.

Dry stock farms can cover large areas of hill-country grassland that may be steep and prone to erosion.

Grey mullet have a worldwide distribution and Aotearoa is at the southern limit of their range.