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

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    Whitianga Wharf

    Whitianga Wharf sea levels
  • Tangaroa new logo

    RV Tangaroa

    Facility
    RV Tangaroa is New Zealand’s only ice strengthened and dynamically positioned deep-water research vessel.
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    Ways to improve stream water quality

  • 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.
  • Altered water flow (hydrology)

    Each waterway has its own particular characteristics relating to water flow, velocity, and quantity.
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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.
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    Mean number of days of ground frost

    These datasets are available in a range of formats.
  • 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.
  • Coldest seawater discovered

    Feature story
    The coldest seawater on earth could help scientists understand why Antarctic sea ice is growing in a warming world
  • UV index signage at Lauder

    UV Index Information

    Education Resource
    The UV Index is a measure of the intensity of UV radiation. The UV Index supersedes the idea of "Time to Burn" or "Burn Time", which has been used previously in New Zealand.
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    Suspended-sediment yield estimator

    This national GIS ‘layer’ enables reconnaissance-scale estimation of suspended-sediment yields from New Zealand’s rivers and streams. It has been developed by NIWA in collaboration with Landcare Research.