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

  • Otago

    The climate of Otago is perhaps the most diverse of any region in New Zealand.
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    Tuna - diet

    Longfin eels are the largest and longest-lived fish in New Zealand's freshwaters, and where they are present they are the top predator.
  • Generating synthetic wind data

    Research Project
    NIWA has recently created synthetic, multi-year, 10-minute wind datasets at 15 wind farm sites across New Zealand. These will be used by the Electricity Commission to model the impact of wind farms on the national grid.
  • Carbon dioxide

    Facility
    Atmospheric carbon dioxide (CO2) is measured continuously at Baring Head, providing the longest running record of this type in the Southern hemisphere.
  • Dry stock

    Dry stock farming consists predominantly of pasture grazing beef cattle, sheep, and deer for meat, wool, and velvet production.
  • Lauder Atmospheric Research Station

    UVI forecast for Specific Sites

    Check out UV index forecasts for locations in New Zealand (including ski fields), Australia, the Pacific and Antarctica.
  • Questions and answers about oyster disease Bonamia ostreae

    Media release
    NIWA is today issuing some scientific information on the parasite Bonamia ostreae, recently discovered in Big Glory Bay, Stewart Island, and the risk it poses to the Bluff oyster fishery.
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    Riparian management classification

    Management of stream riparian areas - including vegetation and stock access - influences the health of streams and downstream water bodies.
  • 2012-2013 Drought

    The 2012-2013 drought affected the entire North Island plus the west coast of the South Island.
  • NZ temperature record

    Research Project
    There are many lines of evidence showing that NZ has warmed during the past century.
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    Kanae

    Grey mullet have a worldwide distribution and Aotearoa is at the southern limit of their range.