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HIRDSv4 Usage
NIWA's High Intensity Rainfall Design System (HIRDS) offers planners and engineers more certainty about the frequency of high-intensity rainfall events, enabling them to better design stormwater drainage, flood defence systems and other vital structures. -
Waikato
Waikato exhibits a range of climates due to the variety of landscapes in the region. -
Ideas for projects using climate data
Education ResourceIdeas for projects using climate data -
Native forests absorbing more carbon dioxide
Media release06 June 2017New 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. -
Bay of Plenty
The topography of the North Island has a profound effect on the weather of the Bay of Plenty region. -
Climate change, global warming and greenhouse gases
Climate data and common terms explaining the causes and effects of climate change. -
Understanding and predicting floods and their impacts
Feature story06 June 2017Floods are not unusual in New Zealand, but those that hit us early this winter broke records. Why did they occur? Should we expect more? Can we predict future floods? -
'Eleven-station' series temperature data
Research ProjectTemperature trends from 1930s to present day -
Winter 2020 – NZ’s warmest winter on record
Media release06 June 2017New Zealand has just experienced its warmest winter on record, according to official NIWA climate data.