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 ...

A new NIWA-led study has found that climate change increased the amount of total rainfall during Cyclone Gabrielle by 10%. This additional rain fell during the most intense parts of the storm, ...

Stories of tremendous forest fires, huge storm events, and suffocating heatwaves have dominated headlines over the past few years. We instinctively feel that our weather is getting wilder. Are we ...

The website Ian Wishart has based his opinions on is not New Zealand’s national climate database. Wishart has conflated the Historic Weather Events website with the New Zealand National Climate ...

A four-year NIWA study has found that constructed wetlands can reliably remove more than half of the nitrate leaching from dairy farm pastures. Excess levels of pollutants, such as nitrate-nitrogen, ...

Microbes - such as those living in wetlands, landfills or the digestive tracts of livestock – are behind unprecedented spikes in methane emissions, according to new research from the University of ...

A new species has been named after favourite Wellington brewpub Fork and Brewer. NIWA Marine Biologists Rachael Peart (left) and Kareen Schnabel (right) with competition winner, Fork and Brewer's Head ...

Dr Erica Williams was hearing time and again from hapū partners about the impacts they were observing when they went to their awa to get food for the table. “For some time they were reporting that the ...

Scientists analysing end-of-summer snowline survey photos have estimated that 13 million cubic meters of ice have been lost from just one glacier from 2016 to 2019. NIWA climate scientist Dr Andrew ...

January was Auckland's wettest month since records began, according to meteorologists. The Central Auckland Rainfall series recorded a total of 539 mm of rain at Albert Park, smashing the previous ...

NIWA is using machine learning to forecast flood inundation in a fraction of the time required to run physical models. NIWA Climate, Atmosphere & Hazards platform manager Nava Fedaeff leads the ...

NIWA scientists have seen substantial changes in the ocean to the east of New Zealand, with possible impacts for important fisheries. Since 2006, strong, full-depth ocean warming has occurred south of ...