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

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    Privacy Policy

    Last Updated: July 2025
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    Impacts of mining

    Impacts of mining on water quality and mahinga kai.
  • RV Tangaroa in Antarctica

    Our partners & funders

    NIWA has working relationships with hundreds of organisations in New Zealand and overseas.
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    Mean monthly rainfall (mm)

    These datasets are available in a range of formats.
  • Rig shark

    Research Project
    Rig shark is an important inshore commercial fish species in New Zealand, and we need to understand more about their habitats, movements, nursery grounds and vulnerability to human impacts to ensure they are managed sustainably and their productivity is enhanced.
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    What are greenhouse gases?

    Greenhouse gases are atmospheric gases that intercept long-wave (mainly infrared) radiation emitted from the Earth's surface.
  • The impact of El Niño and La Niña on New Zealand's climate

    El Niño accounts for less than 25 percent of the year-to year variance in seasonal rainfall and temperature at most locations in New Zealand.
  • Applying for vessel time

    Find out how you can have access to Earth Science NZ's research vessels to carry out marine research voyages.
  • NOAA Satellite data

    Like the GMS satellite, the NOAA Series of polar orbiting satellites (operated by NOAA, the US National Oceanic and Atmospheric Administration) are a component of the World Weather Watch meteorological satellite network.
  • Chemical contamination and wastewater

    What are the potential sources of chemical contaminants in wastewaters?
  • Coldest seawater discovered

    Feature story
    The coldest seawater on earth could help scientists understand why Antarctic sea ice is growing in a warming world
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    Map Sw North

    Education Resource
    Because of its exposure to disturbed weather systems from the Tasman Sea, this climate zone is often quite windy, but has few climate extremes.