NIWA develops and supplies custom software for environmental analysis and modelling.

This is a sub-tropical climate zone, with warm humid summers and mild winters.

Currently, the most reliable method to estimate the age of tuna is by examination of their otoliths or "ear bones"

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

This system combines daily sea-level data from NIWA, regional councils, port companies, Antarctica NZ, Bureau of Meteorology and territorial authorities.

Blooms of hazardous cyanobacteria (blue-green algae) in rivers, lakes and reservoirs can cause problems for both animal and human health.

The greenhouse effect is a warming of the earth's surface and lower atmosphere caused by substances which let the sun's energy through to the ground but impede the passage of energy from the earth back into space.

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 run a computer model which simulates wave heights across the Canterbury continental shelf and along the coast.

NIWA makes available and regularly updates results from several greenhouse gas measurement projects.

Submerged plants have a number of advantages that favour their use as indicators of lake ecological condition.