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, ...

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 ...

Antarctica is the coldest place on earth. It is also the windiest, driest, and highest continent. The South Pole is not the coldest place in Antarctica. The coldest temperature recorded in Antarctica ...

Riskscape, a collaboration between NIWA and GNS Science, is a software application for analysing natural hazard consequences ...

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 ...

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 ...

Ocean acidification is the name given to the lowering of pH of the oceans as a result of increasing carbon dioxide (CO2) in the atmosphere. The pH of the ocean is determined by the level of hydrogen ...

The graph shows carbon dioxide (CO 2) levels measured at Baring Head, NIWA’s clean air station, near Wellington. This station has been running since 1972 and is home to the longest running continuous ...

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 ...

The Joint Graduate School in Coastal and Marine Science, co-managed by NIWA and the University of Auckland, is equipping and energising young scientists from New Zealand and around the world for ...

Anyone can use the tool and provide data by using the survey available in the NIWA Citizen Science app. The survey/app provides a standardized way to record data on the characteristics of instream ...

View annual, seasonal and monthly summaries of temperature, rainfall and sunshine data from across New Zealand. You might also be interested in our 'Seven-station' series temperature data. This ...