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.

  • Development of sustainable water supply and treatment systems for a coastal Fijian village

    Research Project
    This collaborative NZaid project worked with coastal Fijian villagers at Votua on the Coral Coast of Viti Levu to develop pragmatic water supply and waste treatment solutions to protect public health and reduce contamination of coastal waters.
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    Tuna - elvers and recruitment

    Once in freshwater, glass eels develop into darker pigmented juvenile eels known as elvers.
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    What do 'carbon neutral' and 'carbon footprint' mean?

    A carbon neutral activity is one that has a carbon footprint of zero.
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    Summer Series 10: Super snapper! Delicious!

    News article
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    Tornadoes - how frequently do they hit New Zealand?

    News article
    Tornadoes, like the one that hit Auckland's western suburbs today, are relatively rare events in New Zealand.
  • Special Climate Statement 2017-18 Summer

    Sea surface temperatures in the southern Tasman Sea rose to exceptionally high levels in late 2017 and early 2018. These temperatures were far above any others previously observed at that time of year in the region, and extended west from New Zealand to Tasmania and mainland southeast Australia.
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    New Zealand bathymetry - Further information

    Technical information about our datasets and methodology along with related resources.
  • Wastewater Treatment

    Wastewater treatment is the separation and extraction of solid waste from liquid waste, and the removal of nutrients and pathogens.
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    Chemical contamination and aquaculture

    What are the potential sources of chemical contamination from aquaculture activities?
  • Wairarapa drought

    Drought

    Education Resource
    Defining drought and identifying its causes and impacts on humans.