The drought forecasting tool uses innovative climate modelling, the latest in machine learning and other data-driven techniques to predict rainfall 35 days ahead. Helping farmers and growers better ...

This five-year NIWA-led research programme is developing a system to map flood hazard consistently across the whole country. It will reveal how our flood risk might change over the next 100 years ...

The Global Warming Potential (GWP) of a greenhouse gas is its ability to trap extra heat in the atmosphere over time relative to carbon dioxide (CO 2). This is most often calculated over 100 years, ...

The Climate Changes, Impacts & Implications project ran from 2012 to 2016 and aimed to update and improve projections of climate trends, variability and extremes across New Zealand out to 2100.

Measured in Auckland (Leigh Marine Observatory), Paraparaumu, Christchurch, Lauder, Invercargill. Click on the thumbnail to see a larger version of each of these graphs. Time series of these UV data ...

These guidelines have been developed to assist infrastructure designers and managers, waterway managers, environmental officers, iwi and local communities with understanding and promoting better ...

Data stored in each record include the location of the sample site, sampling method and the fish species present, with many records also containing information on fish abundance and size, and a ...

Te Kūwaha, NIWA’s National Centre for Māori Environmental Research is a dedicated Māori research team, with a vision to work in partnership with others to enable complementary knowledge systems to ...

A summary of up-coming tropical cyclone seasons, issued annually.

NIWA's High Intensity Rainfall Design System (HIRDS) offers planners and engineers more certainty about the frequency of high-intensity rainfall events, enabling them to better design stormwater ...

We know that our people are everything, and to produce top-quality science we need to attract, develop and retain the very best people. The National Institute of Water and Atmospheric Research Ltd ...

This work is licensed under a Creative Commons Attribution 4.0 International License. These maps (click for full sized versions) are updated daily and are based on data from our National Climate ...