National Institute of Water and Atmospheric Research

NIWA, the National Institute of Water and Atmospheric Research, is a New Zealand Crown research institute that conducts scientific investigation into freshwater, marine, and atmospheric systems. It provides research, data, and advisory services to government agencies, industry, iwi, and the public. The institute's work supports weather forecasting, climate change assessment, fisheries management, and natural hazard mitigation. NIWA also operates monitoring networks and delivers environmental information that underpins policy and decision‑making across the country.

NIWA maintains facilities in several New Zealand cities, including Auckland, Wellington, Christchurch, and Hamilton. It employs a multidisciplinary staff of scientists, technicians, and support personnel who work across its various sites. The organisation operates a range of specialised vessels, laboratories, and computing resources to support its field and modelling work. Through these assets, NIWA delivers services that reach from local communities to international research collaborations.

NIWA's core specialisation lies in the integrated study of water cycles, oceanography, and climate dynamics. It is recognised for its expertise in atmospheric modelling, particularly through the operation of the FitzRoy supercomputer used for weather prediction. The institute also holds a significant role in managing New Zealand's fisheries research, providing stock assessments and ecosystem advice. In 2014, NIWA's FitzRoy supercomputer experienced a reported cybersecurity incident that led to its temporary disconnection from the internet, although subsequent analysis did not confirm unauthorised access or data loss.

As a Crown research institute, NIWA is wholly owned by the New Zealand Government and operates under the auspices of the Ministry of Business, Innovation and Employment. Its governance includes a board appointed by the Minister, ensuring alignment with national science strategy and public interest objectives. NIWA reinvests its surplus into research infrastructure and capability development, maintaining independence while delivering contracted work for external clients. The institute's structure enables it to balance long‑term environmental science with responsive services to stakeholders across sectors.