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.

  • Regional climatologies

    A regional climatology is a summary of the typical weather and climate of a region, based on historical data observations made at climate stations located within the region.
  • Resources for teachers

    NIWA's educational resources and scientific data are tools for young people to learn about science.
  • Atlantis ecosystem model

    Atlantis is a 3D, spatially-explicit, trophodynamic ecosystem model that integrates biology, physics, chemistry and human impacts to provide a synoptic view of marine ecosystem function.
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    Mitigation and best practice options

    Some simple steps to minimise the effects of aquaculture activities on water quality and mahinga kai.
  • Sea level observations (near real-time)

    Service
    This system combines daily sea-level data from NIWA, regional councils, port companies, Antarctica NZ, Bureau of Meteorology and territorial authorities.
  • algal bloom

    Algal monitoring service

    Service
    Blooms of hazardous cyanobacteria (blue-green algae) in rivers, lakes and reservoirs can cause problems for both animal and human health.
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    What is the greenhouse effect?

    Education Resource
    The greenhouse effect is a warming of the earth's surface and lower atmosphere caused by substances which let the sun's energy through to the ground but impede the passage of energy from the earth back into space.
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    New map reveals New Zealand’s seafloor in stunning detail

    News article
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    Tuna - age and methods of ageing

    Currently, the most reliable method to estimate the age of tuna is by examination of their otoliths or "ear bones"
  • Canterbury Wave Conditions

    Software Tool/Resource
    NIWA run a computer model which simulates wave heights across the Canterbury continental shelf and along the coast.