Atmospheric analysis

Confused about El Niño, or can't tell the difference between an Anticyclone and an Isobar? Let us help.

Temperature trends from 1930s to present day

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

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.

Monthly climate summaries from December 2001 to the present.

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

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.

NIWA's research on freshwater monitoring and reporting is one of three research areas within the 'Values, Monitoring and Outcomes' (VMO) programme led by Landcare Research.