Atmospheric analysis

Antarctica is experiencing stunning skyscapes like those recently seen in New Zealand, thanks to the afterglow effect from the Tongan volcano.

Ocean acidification is the name given to the lowering of pH of the oceans as a result of increasing carbon dioxide (CO2) in the atmosphere.

There are two methods to determine visual clarity in SHMAK; the clarity tube (or SHMAK tube) and the black disc method.

There are several ways to tell the three New Zealand eel species apart.

An overview of Science at NIWA

In this blog series, we feature a new critter from our expansive invertebrate collection including pictures of specimens in their unique habitat. The blogs also feature news, links and fun facts that showcase New Zealand’s fascinating marine fauna.

Instream barriers and diversions alter the natural flow of rivers, streams, and lakes.

Dry stock farms can cover large areas of hill-country grassland that may be steep and prone to erosion.

How do I create a graph?
Using Microsoft® Excel is easy because the Chart Wizard does all the work for you!
Simply enter the data for your data table.
Highlight the cells you want to graph.
Click on the Chart Wizard icon on the Tool Bar.
Select the chart type you want to use and click Next.
Click Next to confirm the range of cells.
Give your graph a title, label x- and y-axis and click Next.
Click on the gridlines tab to remove or add gridlines.
Click Finish and graph is complete!
Help, my graph is too small!
When the chart wizard creates your graph it will probably be too smal

Today's UV Index

The UV Index is a measure of the intensity of UV radiation. The UV Index supersedes the idea of "Time to Burn" or "Burn Time", which has been used previously in New Zealand.