Atmospheric analysis

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.

NIWA's research on freshwater monitoring and reporting is one of three research areas within the 'Values, Monitoring and Outcomes' (VMO) programme led by Landcare Research.

Like the GMS satellite, the NOAA Series of polar orbiting satellites (operated by NOAA, the US National Oceanic and Atmospheric Administration) are a component of the World Weather Watch meteorological satellite network.

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.

The climate of this area is greatly dependent on its exposure to weather systems from the Tasman Sea and the lie of the Southern Alps to the east.

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

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

What are the sources of chemical contamination from wood processing?

Information about climate and weather and links to climate-related websites.

A collection of ID guides to algae. Groups include major freshwater algal groups, diatoms and blue-green (cyanobacteria), red and green algae.

The topography of the North Island has a profound effect on the weather of the Bay of Plenty region.