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.

  • Chemical contamination and agriculture

    What are the potential sources of chemical contamination from agricultural activities?
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    Algae ID guides

    A collection of ID guides to algae. Groups include major freshwater algal groups, diatoms and blue-green (cyanobacteria), red and green algae.
  • Bay of Plenty

    The topography of the North Island has a profound effect on the weather of the Bay of Plenty region.
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    Reports

    Reports produced by NIWA’s air quality research.
  • Clouds

    Education Resource
    Common questions about clouds, how they are formed and how they behave.
  • National and regional climate maps

    Research Project
    Maps of average annual rainfall, temperature and other climate variables have been produced for all of New Zealand, based on the period 1981–2010.
  • Raglan A, Cam-era monitoring site

    Raglan A

    This web camera is available thanks to the support of Waikato Regional Council.
  • Careers at NIWA

    Find out more about working at NIWA
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    Obtaining climate data from NIWA

    NIWA maintains the national climate database for New Zealand, and can supply data in a variety of ways.
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    The Intergovernmental Panel on Climate Change (IPCC)

    Education Resource
    The Intergovernmental Panel on Climate Change (IPCC) is charged with assessing the most up to date scientific, technical and socio-economic research on climate change.
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    Sediment and agriculture

    How may agricultural activities increase sediments in waterways?