Methane (CH₄) is New Zealand’s most significant greenhouse gas, making up over 50% of the country’s emissions, primarily from farmed livestock and waste facilities. Unlike CO₂, methane is more potent ...

June 2025 mean sea level air pressure was higher than normal to the south of Aotearoa New Zealand, and mostly near normal over the country. This was associated with more easterly winds than normal for ...

Forecasting future weather starts by knowing what the weather is doing right now – everywhere in the world!

This research project is developing an energy-efficient, net-zero-emission process for wastewater denitrification.

Weather tells you what to wear each day, while climate tells you what types of clothes to have in your closet.

NIWA’s annual end-of-summer snowline survey has revealed continued loss of snow and ice for New Zealand’s famous glaciers.

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 ...

Scientists have found a new ghost shark that lives exclusively in the deep waters of Australia and New Zealand. The Australasian Narrow-nosed Spookfish was described by NIWA Fisheries Scientist Dr ...

NIWA is part of a multi-agency biosecurity response to an invasive seaweed discovered at Aotea Great Barrier Island and subsequently at Ahuahu Great Mercury Island.

New maps from NIWA and the Deep South National Science Challenge show areas across Aotearoa New Zealand that could be inundated by extreme coastal flooding. They show a large storm-tide with the ...

NIWA has developed a Photarium using the latest 3D printing technology to more safely identify and measure fish species that live in our waterways. According to Statistics NZ, 76 percent of the 51 ...

Cyclone Gabrielle - Hawkes Bay. NIWA's Jochen Bind surveying stop banks to assess flood water levels and stop bank breaches. The team also looked at what may have happened if the world was even hotter ...