Atmospheric analysis

The New Zealand Drought Monitor is a system for keeping track of drought conditions across New Zealand based on a standardised climate index.

More information about NIWA's UV Atlas

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

Nutrients in waterways are essential for the growth of algae and aquatic plants but too much can destroy an ecosystem.

NIWA's mission is to conduct leading environmental science to enable the sustainable management of natural resources for New Zealand and the planet.

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

Monthly climate summaries from December 2001 to the present.

These datasets are available in a range of formats.

To prepare for changes in climate, our freshwater and oceans decision-makers need information on species vulnerability to climate change.

Technical information about our datasets and methodology along with related resources.

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

When soils erode, sediments are washed into waterways.