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What is the chance of a warm summer in Invercargill?
In this activity you will analyse the Southern Oscillation Index and investigate the chances of getting below normal, normal or above normal summer temperatures in Invercargill. -
Generating synthetic wind data
Research ProjectNIWA has recently created synthetic, multi-year, 10-minute wind datasets at 15 wind farm sites across New Zealand. These will be used by the Electricity Commission to model the impact of wind farms on the national grid. -
Extreme weather - winds and tornadoes
Education ResourceDue 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. -
Lesson 9: Ngā Tohu o te Taiao – Māori environmental indicators
Education ResourceThis lesson will explore the use of Māori environmental indicators [tohu] to anticipate local weather and climate conditions. -
HIRDSv4 Usage
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. -
Drought
Education ResourceDefining drought and identifying its causes and impacts on humans. -
What is Ocean acidification?
NIWA oceanographer Dr Cliff Law explains the impacts of ocean acidification on organisms that use carbonates to build their shells, and on bacteria. -
Mean monthly sunshine (hours)
These datasets are available in a range of formats. -
NZ's warmest and wettest winter on record
Media release06 June 2017NIWA’s climate scientists can now confirm what you may have suspected. After carefully poring through more than a century’s worth of data, it has been officially determined that winter 2022 was Aotearoa New Zealand’s warmest and wettest on record. -
Assessment of crop and tree species growing potential using climate, soil and topographic information
Research ProjectThis 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.