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.

  • Urbanisation

    Aotearoa’s main urban areas cover approximately 2% of total available land.
  • Education and information

    Education Resource
    Explore our education and information section to find out about climate and climate change, weather, our atmosphere, estuaries and more.
  • Products

    Service
    Here is our complete range of products.
  • QGIS

    QGIS is a free, open source, desktop mapping tool, widely used in New Zealand in government, research, commercial and NGO arenas.
  • Wood processing

    Trees are grown and converted into a range of useful timber and paper products.
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    Lake Ōmāpere and the Utakura River

    Tuna harvested from Lake Ōmāpere and Utakura River catchment have long comprised an important fishery for tangata whenua.
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    CASAL

    CASAL is an advanced software package developed by NIWA for fish stock assessment.
  • Huka Falls

    Our mission

    NIWA's mission is to conduct leading environmental science to enable the sustainable management of natural resources for New Zealand and the planet.
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    Mean monthly temperatures (°C)

    These datasets are available in a range of formats.
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    Tuna - identification

    There are several ways to tell the three New Zealand eel species apart.
  • Scientists explore deepest parts of the Kermadec Trench

    Media release
    Scientists exploring the Kermadec Trench believe they have retrieved the deepest ever sediment sample from the bottom of the ocean using a wire-deployed corer.