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.

  • SolarView example

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

    The kākahi or freshwater mussel was a valuable mahinga kai resource for many Māori.
  • Riparian vegetation and agriculture

    How may agricultural activities impact riparian vegetation around a waterway?
  • Library

    Service
    The NIWA library collection contains items in a range of formats, covering subjects including atmospheric and climate research, aquaculture, oceanography, fisheries and marine sciences.
  • Al Brown - How to Cook Hapuku

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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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    Mean monthly sunshine (hours)

    These datasets are available in a range of formats.
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    Map E North

    Education Resource
    Sheltered by high country to the west, the eastern zone of the North Island enjoys a dry, sunny climate.
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    What are ppm and ppb?

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

    Generally speaking, a drought is defined as a rainfall deficit which restricts or prevents a human activity – for example, farming or power generation.
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    How do we determine past climate?

    Information about past climate is obtained from piecing evidence together from various sources.
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    Temperature changes

    Temperature affects the number and type of animals and plants that live in a waterway.