On 1 July 2025, NIWA merged with GNS Science to become Earth Sciences New Zealand.

Atmospheric analysis

NIWA has been using advanced scientific instruments to measure atmospheric trace gases and isotopes for over 50 years.

  • Marlborough

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

    Software Tool/Resource
    NIWA run a computer model which simulates wave heights across the Canterbury continental shelf and along the coast.
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    Map South

    Education Resource
    Most of this climate zone is characterised by cool coastal breezes, and absence of shelter from the unsettled weather that moves over the sea from the south and southwest.
  • Common climate and weather terms

    Education Resource
    A glossary of common climate change and meteorological terms.
  • Rig shark

    Research Project
    Rig shark is an important inshore commercial fish species in New Zealand, and we need to understand more about their habitats, movements, nursery grounds and vulnerability to human impacts to ensure they are managed sustainably and their productivity is enhanced.
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    What are greenhouse gases?

    Greenhouse gases are atmospheric gases that intercept long-wave (mainly infrared) radiation emitted from the Earth's surface.
  • UV index signage at Lauder

    UV Index Information

    The UV Index is a measure of the intensity of UV radiation. The UV Index supersedes the idea of "Time to Burn" or "Burn Time", which has been used previously in New Zealand.
  • Instream barriers and altered water flow

    Instream barriers and diversions alter the natural flow of rivers, streams, and lakes.
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    Standardised Precipitation Index (SPI)

    The Standardised Precipitation Index (SPI) is a simple measure of drought (and also of very wet conditions) and is based solely on the accumulated precipitation for a given time period.
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    The formation of the Antarctic bottom water

    Blog
  • Wave action

    Feature story
    New Zealand’s coast is sculpted by ocean waves. Some wave conditions bring joy to surfers and beachgoers, but, at other times, waves can cause major hazards at sea or along the shore.
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    Inanga

    Inanga are the predominant species in the modern whitebait fishery.