Tuesday, 9 August 2011

Causes of Brown Haze

Scientists believe that brown haze is caused by Nitrogen Dioxide and Particulate matter. But the key factors in causing Auckland's haze, both chemical and meteorological are currently a subject of research.

The 11,000 litres of air we breathe per day is the determining factory in many respiratory and cardiac illnesses in Auckland. There are approximately 15-30 days a year when pollutant levels in Auckland's air exceed our National Environmental standards.

Nick Talbot at NIWA is currently engaged in a research project to determine the weather conditions that cause 'brown haze' using air quality instruments. Detailed information and fact sheets about haze and air quality are available on the Auckland Council website.


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