Atmospheric analysis

This calculator estimates the solar energy that can be collected by a solar capture device (solar panel) at a given address, panel direction and roof slope.

The current method for calculating wind speed-up is inadequate, and can grossly under-predict correct design wind speeds in NZ's complex terrain.

Scott Base, Antarctica Antarctica is the coldest, windiest and driest continent. Scott Base is New Zealand's permanent Antarctic base. Sited on the coast, temperatures, although very low, are higher than those recorded inland. Average Rainfall and Temperature Scott Base
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Information about climate and weather and links to climate-related websites.

Tuna, or freshwater eels, are the most widespread freshwater fish in New Zealand. This 'living' educational resource summarises a large amount of scientific and technical literature.

Here is our complete range of products.

The coldest seawater on earth could help scientists understand why Antarctic sea ice is growing in a warming world

Follow NIWA's scientists as they explore the natural world, make new discoveries and share how people use their science.

An interactive guide to the sponges of New Zealand.

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NZ Region Cloud Analysis Australasian Region Infrared Hemispheric Infrared NZ High-res Visible Contact
All transmissions from GMS-5 are no longer received at NIWA’s satellite reception station in Wellington. We are working on an alternative data feed and will be able to bring back these images later this year. Once we start receiving data again, it will then be calibrated, re-mapped onto standard map projections, and archived.

This manual prescribes a set of sampling and analysis protocols applicable to most of the common stream habitats in New Zealand.