Atmospheric analysis

Maps of the average first and last dates of soil moisture deficit are shown here.

Instrument Systems is a specialised technology-focused consulting group within NIWA.

Because of its exposure to disturbed weather systems from the Tasman Sea, this climate zone is often quite windy, but has few climate extremes.

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.

What are the potential sources of chemical contaminants in wastewaters?

The current method for calculating wind speed-up is inadequate, and can grossly under-predict correct design wind speeds in NZ's complex terrain.

Dry stock farms can cover large areas of hill-country grassland that may be steep and prone to erosion.

This Statement of Corporate Intent (SCI) sets out NIWA's strategy for delivering against its core purpose over the next five years.

This identification guide covers the common crustose coralline algae found in central New Zealand.

Monthly climate summaries from December 2001 to the present.

NIWA operates about 30 other Maritime New Zealand-certified vessels based at Bream Bay, Auckland, Hamilton, Rotorua, Turangi, Wellington, Nelson, Greymouth, Tekapo, Christchurch, and Dunedin.