As weather systems tracked toward New Zealand from the west and north, they lacked moisture because of cooler eastern Indian Ocean seas caused by the IOD.NIWA’s climate change expectations suggest spring average rainfall decreases for northern New Zealand, including Auckland.
Dr Longley has been monitoring air quality in Auckland, Wellington and Christchurch since Level 4 restrictions were implemented and says working from home did not only cut emissions but could also reduce health risks.
And while conditions have improved in most regions, NIWA meteorologist Ben Noll says river flows and soil moisture levels remain below normal for large parts of the North Island and upper South Island while before last weekend drought still persisted in the Coromandel Peninsula.
Traffic pollution measurements in Auckland since Level 4 restrictions were eased on Tuesday have shown levels soaring even higher than those before lockdown, NIWA air quality scientists say.Nitrogen oxides have also returned to pre-lockdown levels in Christchurch but not as dramatically as Auckland.
Everything from eating brownies made with bugs to a substitute for stickers on fruit has had a scientific eye cast over it ahead of this year’s NIWA Auckland Science and Technology Fair.
A 12-year-old has taken on the most damaging honey bee parasite in the world to win the NIWA Waikato Science and Technology Fair.He compared the use of oxalic acid via cardboard strips and vaporisation on several beehives to determine which method was the most effective.