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

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    Map I South

    Education Resource
    The climate of this zone is largely dependent on the lie of the Southern Alps to the west, but many areas are also sheltered by high country to the south and east.
  • Tornado damage Whenuapai.

    Extreme weather - winds and tornadoes

    Education Resource
    Due to its position in the 'Roaring Forties', a belt of strong winds in the Southern Hemisphere which generally occur between the latitudes of 40 and 49 degrees, as well as its small size, New Zealand is a windy country.
  • Southland

    Southland is both the most southerly and most westerly part of New Zealand and generally is the first to be influenced by weather systems moving onto the country from the west or south.
  • Shifting Sands – the end of a Kiwi dream

    Feature story
    The Kiwi dream of owning a beachfront property with panoramic views of the ocean is under threat—and not just for financial reasons.
  • Other vessels

    Facility
    NIWA operates about 30 other Maritime New Zealand-certified vessels based at Bream Bay, Auckland, Hamilton, Rotorua, Turangi, Wellington, Nelson, Greymouth, Tekapo, Christchurch, and Dunedin.
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    Tuna - maturation and identifying sex

    The sex of tuna is not determined genetically, as in some other organisms.
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    Water temperature and hydro

    How do hydro-electricity activities potentially influence waterway temperatures?
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    Nelson-Marlborough

  • Methane

    Facility
    Methane (CH4) is the second most important greenhouse gas after CO2 that is produced by human activities.
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    Causes of sedimentation

    What are the potential sources of sediments from land use activities?
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    Soil Moisture Deficit (SMD)

    The 3-panel Soil Moisture Deficit (SMD) map shows the historical soil moisture deficit at the date shown (left), the soil moisture deficit at the same time last year (middle) and the current soil moisture deficit (right).