Atmospheric analysis

NIWA run a computer model which simulates wave heights across the Canterbury continental shelf and along the coast.

NIWA makes available and regularly updates results from several greenhouse gas measurement projects.

Dataset available for download

NIWA has developed a powerful software tool for the analysis of water quality data.

Glass eels (about 5.5 to 7.0 cm) arrive in fresh water during spring, especially during September and October, although they may be present from July to December.

NIWA develops and supplies custom software for environmental analysis and modelling.

NIWA’s climate scientists can now confirm what you may have suspected. After carefully poring through more than a century’s worth of data, it has been officially determined that winter 2022 was Aotearoa New Zealand’s warmest and wettest on record.

This is a sub-tropical climate zone, with warm humid summers and mild winters.

Monthly climate summaries from December 2001 to the present.

This weekly update helps assess likelihood of extremely dry weather preceding a drought.

New Zealand rushes (Juncus): species-level factsheets.