Greenhouse gases are atmospheric gases that intercept long-wave (mainly infrared) radiation emitted from the Earth's surface.

Last Updated: July 2025

El Niño accounts for less than 25 percent of the year-to year variance in seasonal rainfall and temperature at most locations in New Zealand.

Find out how you can have access to Earth Science NZ's research vessels to carry out marine research voyages.

Impacts of mining on water quality and mahinga kai.

NIWA has working relationships with hundreds of organisations in New Zealand and overseas.

Within a range of meaningful contexts students will be able to make statements about implications and possible actions consistent with the results of a statistical investigation and to find and authenticate data measures such as mean, median, mode, inter-quartile range, and range.

The seafood counter at your local supermarket has changed.

What are the potential sources of chemical contamination from mining activities?

We are currently steaming out towards our survey area, the Louisville Seamount Chain, which is about 1500 km from Wellington.

The climate of the Manawatu-Wanganui region is a reflection of the generally disturbed westerly air flow with interspersed anticyclones, modified in specific places by the local topography.

References, further reading, and links to useful websites.