Atmospheric analysis

The atmosphere is comprised of layers based on temperature. These layers are the troposphere, stratosphere, mesosphere and thermosphere.

We have prepared a breakdown of the different guidelines that are available for sampling freshwater fisheries. The overview provides links to key documents that explain what should be considered when designing fish monitoring studies and how to implement the various sampling techniques.

NIWA discusses, in depth, this year's most asked question—what is happening to our fresh waterways?

An interactive guide to the sponges of New Zealand.

Monthly climate summaries from December 2001 to the present.

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

Climate data and common terms explaining the causes and effects of climate change.

This is the standard precision instrument NIWA uses throughout New Zealand in the National Climate Network, and elsewhere, for rainfall measurement.

A handful of species we work on

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.

We sponsor regional science and technology fairs around New Zealand and support learning programmes that bring science into the classroom.