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.

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    What are whitebait?

    Whitebait are the juveniles of five species of galaxiidae, a family of fish confined to the Southern Hemisphere.
  • Blue Lake, St Bathans

    Seasonal

    Publication series
    Seasonal climate summaries from summer 2001 to the present.
  • Chemical contamination

    Chemical contaminants are chemicals toxic to plants and animals in waterways.
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    NIWA Hydro Web Portal

    NIWA's Hydro Web Portal provides river flow and water quality monitoring data from NIWA’s Benchmark river monitoring network.
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    Virtual Climate Station data and products

    Virtual climate station estimates are produced every day, based on the spatial interpolation of actual data observations made at climate stations located around the country.
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    New Zealand's Marine Realm

    News article
    NIWA has transformed 1.5 million square kilometres of data into the most accurate and detailed map yet of the land underneath the sea around New Zealand.
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    Water resources and mining

    How may the activities of the mining industry influence water resources?
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    Mean 10cm earth temperature (°C)

    These datasets are available in a range of formats.
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    The formation of the Antarctic bottom water

    Blog
  • Freshwater monitoring and reporting

    Research Project
    NIWA's research on freshwater monitoring and reporting is one of three research areas within the 'Values, Monitoring and Outcomes' (VMO) programme led by Landcare Research.
  • SolarView example

    An illustrated example, showing how to input data and interpret SolarView results.