Atmospheric analysis

Information about past climate is obtained from piecing evidence together from various sources.

Temperature affects the number and type of animals and plants that live in a waterway.

How do nutrients from wastewater treatment enter waterways?

If you list all the historic rainfall totals for a particular month and for a specific location, rank these from lowest to highest, then divide the list into ten equal parts, you have identified the ten rainfall deciles for that month and for that location.

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Dissolved oxygen (DO) is a relative measure of the amount of oxygen (O2) dissolved in water.

Northland, with its northern location, low elevation and close proximity to the sea is characterised by a mild, humid, and rather windy climate.

NIWA has recently created synthetic, multi-year, 10-minute wind datasets at 15 wind farm sites across New Zealand. These will be used by the Electricity Commission to model the impact of wind farms on the national grid.

Dry stock farming consists predominantly of pasture grazing beef cattle, sheep, and deer for meat, wool, and velvet production.