Atmospheric analysis

Each waterway has its own particular characteristics relating to water flow, velocity, and quantity.

These datasets are available in a range of formats.

Our southwest Pacific research focuses on recent and historic climate and weather activity, including our involvement in ACRE Pacific data rescue.

The UV Index is a measure of the intensity of UV radiation. The UV Index supersedes the idea of "Time to Burn" or "Burn Time", which has been used previously in New Zealand.

This national GIS ‘layer’ enables reconnaissance-scale estimation of suspended-sediment yields from New Zealand’s rivers and streams. It has been developed by NIWA in collaboration with Landcare Research.

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

The sex of tuna is not determined genetically, as in some other organisms.

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

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.

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