Atmospheric analysis

There are two methods to determine visual clarity in SHMAK; the clarity tube (or SHMAK tube) and the black disc method.

Inland South Island
Lake Tekapo, Queenstown, Alexandra, Manapouri
The climate of this zone is largely dependent on the lie of the Southern Alps to the west, but many areas are also sheltered by high country to the south and east. Mean rainfall is low, and long dry spells can occur, especially in summer. Summer afternoons are very warm, with high temperatures occurring when hot dry foehn northwesterlies blow over the Alps. Typical summer daytime maximum air temperatures range from 20°C to 26°C, occasionally rising above 30°C.

Due to its position in the 'Roaring Forties', a belt of strong winds in the Southern Hemisphere which generally occur between the latitudes of 40 and 49 degrees, as well as its small size, New Zealand is a windy country.

The main characteristic of the Marlborough climate is its dryness. Summer droughts are frequent, and the region is often swept by warm, dry northwesterlies.

NIWA oceanographer Dr Cliff Law explains the impacts of ocean acidification on organisms that use carbonates to build their shells, and on bacteria.

Compound specific stable isotope analysis techniques are an increasingly useful tool to address many ecological and environmental research questions.

A list of some of the questions we get asked most frequently. If you don't see your question answered here, please get in touch.

Farmers are making business decisions everyday which are influenced by environmental factors. We can help farmers to improve decision-making, mitigate farm environment risk, and to become more productive, efficient, competitive and sustainable.

Here are some simple steps to minimise the effects of dairying on water quality and mahinga kai.

These datasets are available in a range of formats.

This calculator estimates the solar energy that can be collected by a solar capture device (solar panel) at a given address, panel direction and roof slope.