Atmospheric analysis

You can download these summaries in a range of formats.

References, further reading, and links to useful websites.

When soils erode, sediments are washed into waterways.

Longfin eels are the largest and longest-lived fish in New Zealand's freshwaters, and where they are present they are the top predator.

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

All aspects of the climate of Canterbury are dominated by the influence of the Southern Alps on the prevailing westerly airflows.

How can we help you?

Biogas from pig farms

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

Where and when do white sharks occur in New Zealand waters, and how can fisheries bycatch be reduced?

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