Atmospheric analysis

NIWA has working relationships with hundreds of organisations in New Zealand and overseas.

These datasets are available in a range of formats.

Glass eels (about 5.5 to 7.0 cm) arrive in fresh water during spring, especially during September and October, although they may be present from July to December.

This weekly update helps assess likelihood of extremely dry weather preceding a drought.

References, further reading, and links to useful websites.

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

When soils erode, sediments are washed into waterways.

Tornadoes, like the one that hit Auckland's western suburbs today, are relatively rare events in New Zealand.

The climate of this area is greatly dependent on its exposure to weather systems from the Tasman Sea and the lie of the Southern Alps to the east.

What are the sources of chemical contamination from wood processing?

A collection of ID guides to algae. Groups include major freshwater algal groups, diatoms and blue-green (cyanobacteria), red and green algae.