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.
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    Map Scott

    Education Resource
    Scott Base, Antarctica Antarctica is the coldest, windiest and driest continent.
  • 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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    Mussels: more, fresher, better

    Feature story
    The seafood counter at your local supermarket has changed.
  • Aquaculture Species

    A handful of species we work on
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    Water take

    Water take (also known as water abstraction) has a range of valuable public and private uses.
  • When fresh water meets salty water

    When fresh water meets salty water - a classroom exercise that explores the physics of estuaries.
  • 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.
  • Careers at NIWA

    Find out more about working at NIWA
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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.
  • Wood processing

    Trees are grown and converted into a range of useful timber and paper products.