Atmospheric analysis

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.

Tuna or freshwater eels are a very significant, widely-valued, heavily-exploited, culturally iconic mahinga kai resource.

Find out more about emergent aquatic plants.

The need to provide upstream passage facilities for ensuring the long term sustainability of migratory freshwater fish populations is now well recognised.

Stormwater poses risks to NZ’s urban streams & coastal waters, affecting ecological health & the cultural, social, & economic value of these environments.

If you're collecting sea shells at the beach this summer and wondering what they are, NIWA is here to help.

Ideas for projects using climate data

To prepare for changes in climate, our freshwater and oceans decision-makers need information on species vulnerability to climate change.

CFCs have damaged the ozone layer and led to higher UV levels and increased health risks. Our role is to understand the causes and effects of ozone depletion, to inform the public of the risk.

All species of freshwater tuna spawn at sea, although the spawning grounds of only four species are known with certainty worldwide.

Monthly climate summaries from December 2001 to the present.