NIWA and MPI are working together to develop a new drought forecasting tool. It uses innovative climate modelling, the latest in machine learning and other data-driven techniques to predict rainfall ...

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, ...

Please choose in which format you would like to download the dataset, below. Mean monthly sunshine (hours) 1981-2010 (CSV 3 KB) Mean monthly sunshine (hours) 1981 ...

The NIWA Biodiversity Memoir (NBM) series comprises technical works that describe New Zealand’s invertebrate marine life—sponges, corals, hydroids, worms, molluscs, crustaceans, sea stars and ...

Researchers in New Zealand, and around the world, are beginning to understand the different ways our communities will be impacted by climate change. Some of the impacts are already clear, for example, ...

Use this utility to forecast high and low tides anywhere in open coastal and ocean waters around New Zealand for up to 31 days. It also predicts historical tides back to 1830. This current version ...

NIWA maintains the national climate database for New Zealand, and can supply data in a variety of ways. The National Climate Database is an archive of climate observations which in some places extend ...

These pages provide an overview of the freshwater fish found in New Zealand, fact sheets for each individual species and links to other resources. The fact sheets provide some information on each ...

A New Zealand-led team has completed the fullest investigation to date into January’s eruption of the underwater Tongan volcano. Hunga-Tonga Hunga-Ha'apai (HT-HH) emitted the biggest atmospheric ...

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 ...

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 ...

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 ...