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 study from NIWA has mapped outdoor air quality for Invercargill and Alexandra in more detail than ever before. Researchers found that outdoor air in the most polluted locations contained three ...

The newly described Australasian Narrow-nosed Spookfish, Harriotta avia. The Australasian Narrow-nosed Spookfish was described by NIWA Fisheries Scientist Dr Brit Finucci. It was previously thought to ...

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 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 ...

Our assessment of tropical cyclone (TC) activity for the coming season indicates normal to below normal activity. [Tropical cyclones are categorised in strength from 1 to 5, with 5 being most intense.

A huge global study has used teabags to measure carbon storage in wetlands. Scientists, including those from NIWA, buried 19,000 bags of tea in 180 wetlands across 28 countries. This included three ...

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 ...

We’re only halfway through the year, but new NIWA analysis shows some parts of New Zealand have already recorded more than a year’s worth of rain. It was the wettest first half of the year on record ...

RiskScape has been used to assess climate-related coastal flood risk in the Pacific. The tool provides critical information to allow six Pacific nations – Cook Islands, Republic of Marshall Islands, ...

The tables below show the probabilities (or percent chances) for each of three categories: above average, near average, and below average. In the absence of any forecast guidance there would be an ...