Atmospheric analysis

Temperature trends from 1930s to present day

Ocean acidification is the name given to the lowering of pH of the oceans as a result of increasing carbon dioxide (CO2) in the atmosphere.

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

NIWA's High Intensity Rainfall Design System (HIRDS) offers planners and engineers more certainty about the frequency of high-intensity rainfall events, enabling them to better design stormwater drainage, flood defence systems and other vital structures.

There are two methods to determine visual clarity in SHMAK; the clarity tube (or SHMAK tube) and the black disc method.

We recognise that there's so much more to life than just work!

Presented papers, arranged by workshop programme.

Up-to-date drought indicator maps are shown here.

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