Atmospheric analysis

Casal2 is an advanced software package developed by NIWA for modelling the population dynamics of marine species.

Links to related resources and websites

Find out more about free floating species.

River floods occur when water spills from a river channel onto land that is normally dry, and are one of New Zealand's costliest natural hazards.

New Zealand has just experienced its warmest winter on record, according to official NIWA climate data.

The main characteristic of the Marlborough climate is its dryness. Summer droughts are frequent, and the region is often swept by warm, dry northwesterlies.

How can we help you?

NIWA scientists have made the rare discovery of a days-old ghost shark during a recent survey off the east coast of the South Island.

Downloadable and printable guides on identification of common freshwater invertebrates found in New Zealand waterways and lakes.

Common questions about storms and cyclones in New Zealand.

Freshwater eels have an unusual life cycle which sees them travelling between the ocean, estuaries and freshwaters.

An unavoidable delay in a research ship’s voyage to Antarctica resulted in some surprising and important findings about the behaviour of emperor penguins.