Atmospheric analysis

Under the light of the moon where the river meets the sea, NIWA researchers are planning to catch tiny fish that are all but invisible to the naked eye.

NIWA has established a network of high elevation electronic weather stations to provide a solid basis to understand seasonal patterns and long-term changes to seasonal snow and ice in alpine regions of New Zealand.

Daily CO2 measurements from NIWA’s atmospheric monitoring station at Baring Head.

The alp-fed braided rivers of Canterbury are treasured for their landscape, recreational amenities, salmon- and trout-fishing, and unique riverine environments – which provide habitat to a host of endangered birds – but they are under threat from land-use intensification and a growing demand for irrigation water.

Of the more than 70 aquatic plant species naturalised in New Zealand, more than 75% have become problem weeds or have been assessed as having the potential to become future problem weeds. Most of our lakes, rivers and streams are affected by at least one of these species.

RV Tangaroa Summary Voyages 2018 -2019

The first month of data from NIWA’s air quality monitoring project in Arrowtown reveals that air quality has already breached the national standard eight times this winter, including six times in the week from 19 to 26 June – in fact every time the air temperature dropped below freezing.

Impacts of catchment characteristics on the timing of sediment delivery during runoff events.

Braided rivers are an arena where woody weeds and floods are in constant competition with each other.
Braided rivers naturally flood frequently, repeatedly mobilising their bed sediments and shifting their multiple channels.

We’re now halfway through 2019 and NIWA climate data from the first six months tell a dramatic story of weather and climate extremes.

Read NIWA's 2018 Half Year Report.

We’re here already – the shortest day is tomorrow (Saturday) and after this, it gets progressively lighter out to the longest day of the year in December.