Atmospheric analysis

Scientists mapping the Hauraki Gulf seafloor have discovered huge colonies of tubeworms up to 1.5 metres high and collectively covering hundreds of metres providing vital habitats for plants and animals.

NIWA climate scientists are asking for volunteers to help give its historic weather project a quick, sharp boost.

Across the North Island, rainfall during the past week was quite variable. Moderate rainfall occurred in the West Coast and Southland. However, rainfall was generally meagre from Marlborough to southern Canterbury.

Sedimentation effects from human activities are poorly known, but an important concern for environmental sustainability of activities in the deep sea.

Across the North Island, rainfall during the past week was generally higher than several previous weeks, with many locations receiving 10-20 mm and isolated pockets of 30 mm or more.

Scientists have recorded more snow on the South Island glaciers this year, but they warn it is simply a temporary break rather than any good news on the climate change front.

Scientists know so little about how storms affect the delicate balance of lake ecosystems that we may be unable to protect them from the effects of climate change, says a NIWA scientist.

One of the top questions NIWA receives about its Seasonal Climate Outlook is: what is below normal / near normal / above average in my region?

Scientists undertaking the annual Southern Alps end-of-summer snowline survey this week will be using advanced photographic technology to help clarify obscure snowlines due to ash and dust from the Australian bushfires.

Across the North Island, slight soil moisture increases were observed during the past week as a front brought much needed rain to drought affected areas. However, soil moisture levels continue to be well below normal across the vast majority of the island. Across the South Island, soil moisture levels generally increased in the north and decreased in the south during the past week.