Climate & Weather

Due to its position in the 'Roaring Forties', a belt of strong winds in the Southern Hemisphere which generally occur between the latitudes of 40 and 49 degrees, as well as its small size, New Zealand is a windy country.

This lesson will explore the use of Māori environmental indicators [tohu] to anticipate local weather and climate conditions.

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.

Defining drought and identifying its causes and impacts on humans.

NIWA oceanographer Dr Cliff Law explains the impacts of ocean acidification on organisms that use carbonates to build their shells, and on bacteria.

The world’s oceans are acidifying as a result of the carbon dioxide (CO2) generated by humanity.

These datasets are available in a range of formats.

This project demonstrates how to assess high value alternative land-use options by means of a quantitative analysis of the growing potential of selected niche crops and tree species.

NIWA collects wave data, develops and verifies wave forecasting systems, and is developing and producing wave projections.

There are several definitions of drought, depending upon whether it is viewed as a hazard or a risk.

Sea surface temperatures in the southern Tasman Sea rose to exceptionally high levels in late 2017 and early 2018. These temperatures were far above any others previously observed at that time of year in the region, and extended west from New Zealand to Tasmania and mainland southeast Australia.