By Ian Longley Outside our major centres, New Zealand is a country of many small towns separated by long drives. The harder somewhere is to get to, the more likely it is tucked away in a valley or basin, and the more likely it is to rely on wood for home heating. How...
PROJECTS: Ambient Air Quality
AirGrid: Sensor grids to map airborne particulate matter across towns and cities
By: Ian Longley To create a map of air quality across a town or city you used to have spend significant resources setting up and maintaining a sparse air quality monitoring network and then apply uncertain models which rely on emissions data you don’t usually have....
Go South – Finding the missing Southern Ocean Clouds
By: Guy Coulson Current climate models misrepresent cloud formation over the Southern Ocean causing mismatches between models and satellite observations. These errors are important because too much sunlight reaches the ocean surface in simulations, leading to...
Mapping traffic pollution: Using cheap samplers and semi-empirical modelling to gain insight into how urban planning and design impacts exposure
By: Ian Longley The degree to which road traffic pollutes urban air varies hugely, depending how much traffic is nearby. We’ve been mapping traffic pollution in detail across all New Zealand’s towns and cities over the last decade. In doing so we’ve been refining the...
DustGrid: Using low-cost sensors to help manage post-Cyclone dusts
By: Ian Longley In February 2023 floods following Cyclone Gabrielle dumped 20 million tonnes of silt across 4 productive farming valleys in New Zealand’s Hawkes Bay. As recovery operations disturbed the silt dense clouds of dust posed a new hazard that lingered for...
The Air We Share: Helping teachers and students to improve air quality in classrooms
Many teachers know that period 3 brain fog, when the children in front of them slump their shoulders and everything seems harder. It could be stale air. Without good ventilation contaminants can build up, including other people’s breath. And that breath could contain...






