On 1 July 2025, NIWA merged with GNS Science to become Earth Sciences New Zealand.

  • Chemical contamination and agriculture

    What are the potential sources of chemical contamination from agricultural activities?
  • Gisborne

    In comparison with regions exposed to the west, Gisborne experiences a greater number of weather and climatic extremes.
  • Blue Lake, St Bathans

    Seasonal

    Publication series
    Seasonal climate summaries from summer 2001 to the present.
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    Water clarity

    Water clarity or turbidity is the cloudiness or haziness in a fluid caused by individual small particles (suspended solids).
  • Impacts of hydro

    Impacts of hydro-electric activities on water quality and mahinga kai.
  • Layers of the atmosphere

    Education Resource
    The atmosphere is comprised of layers based on temperature. These layers are the troposphere, stratosphere, mesosphere and thermosphere.
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    National

    National climate maps
  • The process

    The process of coming to work with us has five steps: applying, a phone interview, a face to face interview, background checks, and an offer.
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    Snapper life cycle

  • Average soil moisture deficit onset and termination maps

    Maps of the average first and last dates of soil moisture deficit are shown here.
  • Tairua

    Tairua

    Tairua station
  • Atmospheric ozone, ultraviolet radiation, and stratospheric change

    Research Project
    CFCs have damaged the ozone layer and led to higher UV levels and increased health risks. Our role is to understand the causes and effects of ozone depletion, to inform the public of the risk.