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 ...

Pressure One of the main things we have to watch to understand the weather is the presence of low and high pressure. Areas with low pressure are usually associated with bad weather. If an area has low ...

Download a shorter version of this lesson in PowerPoint or as a PDF or continue below to see the lesson in full. The climate of New Zealand is incredibly varied for a country of its size. The warm, ...

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.

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 ...

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

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 ...

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 ...

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 ...

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 ...

Two reports released today by NIWA and the Deep South National Science Challenge reveal new information about how many New Zealanders, how many buildings and how much infrastructure could be affected ...