Seven weeks of clearing the air provides huge benefits

Seven weeks of clearing the air provides huge benefits

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.

Scientists seek smoke sniffers

Scientists seek smoke sniffers

After almost six weeks of monitoring air quality during Level 3 and 4 lockdown restrictions, scientist Dr Ian Longley is now asking people to record where and when woodsmoke is affecting their health and lives.

Pollution levels soar in Level 3, says NIWA

Pollution levels soar in Level 3, says NIWA

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.

Lockdown air quality keeps getting better

Lockdown air quality keeps getting better

Air quality scientist Dr Ian Longley has analysed data from the third week of lockdown and found levels of nitrogen oxides, mostly caused by vehicle exhaust, have fallen between 83 and 91% of normal at most sites.

Steep improvements seen in Auckland air quality, says NIWA

Steep improvements seen in Auckland air quality, says NIWA

NIWA air quality scientist Dr Ian Longley says nitrogen oxide is found in pollutants from vehicle exhausts.Dr Longley says reductions in levels of airborne particulate matter have been more modest—for example a 20 per cent drop in fine particles (PM2.5) at Takapuna during daylight hours.

Unprecedented carbon monoxide readings measured in Central Otago

Unprecedented carbon monoxide readings measured in Central Otago

Dr Longley said concentrations started rising last Tuesday and Wednesday and by Thursday they were three to four times higher than normal across Auckland, Northland, Waikato, Manawatu and Hawke’s Bay. In summer particulate matter levels in New Zealand towns and cities are typically 10-20 micrograms per cubic metre.

NIWA reveals Arrowtown air quality standards breached every time temperature plummets

NIWA reveals Arrowtown air quality standards breached every time temperature plummets

That’s more than double the national standard of 50, with hourly concentrations peaking at 314 micrograms per cubic metre,” says project leader NIWA air quality scientist Dr Ian Longley.

Students, scientists, citizens study Arrowtown’s ailing air

Students, scientists, citizens study Arrowtown’s ailing air

Recent analysis by NIWA has shown that about 800,000 New Zealanders are exposed to fine particles in the air that exceed World Health Organisation guidelines every winter, the majority of which is due to home heating emissions.