Atmospheric analysis

Reports produced by NIWA’s air quality research.

Once eels become migrants (also known as tuna heke or tuna whakaheke) they stop feeding, and progressively develop the external features that clearly distinguish them from 'feeders'.

Common questions about clouds, how they are formed and how they behave.

New Zealand’s forests and other land areas may be absorbing up to 60% more carbon dioxide than has been calculated, with much of this uptake likely occurring in native forests, NIWA scientists have discovered.

Pauanui North station

NIWA maintains the national climate database for New Zealand, and can supply data in a variety of ways.

The Intergovernmental Panel on Climate Change (IPCC) is charged with assessing the most up to date scientific, technical and socio-economic research on climate change.

How do nutrients from wastewater treatment enter waterways?

How may agricultural activities increase sediments in 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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