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

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    What are ppm and ppb?

    PPM and PPB are units used in atmospheric chemistry to describe the concentration of gases.
  • Atmosphere data

    Data from our research which we make publicly available.
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    Fisheries stock assessments

    To get the most benefit from a fish stock in the long term, we need to maximise our yield without damaging the fish population we rely on.
  • Kaitiaki Tools

    Service
    Easing the resource consent process
  • Mahinga kai - what species interests you?

    In Kaitiaki Tools the term mahinga kai generally refers to indigenous freshwater species that have traditionally been used as food, tools, or other resources.
  • Chemical contamination and mining

    What are the potential sources of chemical contamination from mining activities?
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    Meteorologist for a day

    Within a range of meaningful contexts students will be able to make statements about implications and possible actions consistent with the results of a statistical investigation and to find and authenticate data measures such as mean, median, mode, inter-quartile range, and range.
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    Mountains in the Sea: the Louisville Seamount Chain

    We are currently steaming out towards our survey area, the Louisville Seamount Chain, which is about 1500 km from Wellington.
  • Manawatu-Wanganui

    The climate of the Manawatu-Wanganui region is a reflection of the generally disturbed westerly air flow with interspersed anticyclones, modified in specific places by the local topography.
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    Further reading

    References, further reading, and links to useful websites.
  • Sediment

    When soils erode, sediments are washed into waterways.
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    Bay of Plenty