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.

  • (no image provided)

    Map North

    Education Resource
    This is a sub-tropical climate zone, with warm humid summers and mild winters.
  • (no image provided)

    Tuna - glass eels

    Glass eels (about 5.5 to 7.0 cm) arrive in fresh water during spring, especially during September and October, although they may be present from July to December.
  • (no image provided)

    Water take

    Water take (also known as water abstraction) has a range of valuable public and private uses.
  • When fresh water meets salty water

    When fresh water meets salty water - a classroom exercise that explores the physics of estuaries.
  • (no image provided)

    Summer Series 8: The forces behind beach ‘foam’

    News article
  • Landscape

    On-Site Household Sanitation Guidelines for Fiji

    Research Project
    A participatory project empowering communities with self-help tools to improve water, sanitation and hygiene.
  • Annual

    Publication series
    Annual Climate Summaries from 2000 to present.
  • Chemical contamination and agriculture

    What are the potential sources of chemical contamination from agricultural activities?
  • (no image provided)

    Dog Island

    Dog Island levels
  • White sharks

    Research Project
    Where and when do white sharks occur in New Zealand waters, and how can fisheries bycatch be reduced?
  • What is the proposed activity or industry?

    Various industries and land use activities have the potential to impact on water quality and mahinga kai unless properly managed.
  • Gisborne

    In comparison with regions exposed to the west, Gisborne experiences a greater number of weather and climatic extremes.