Poor air quality is a problem during winter in many New Zealand regions. Air pollution can have a significant detrimental effect on human health.
Domestic wood burners are a major source of air pollutants in urban areas during winter. However, until recently, little scientific evidence had been gathered to show how smoke levels in New Zealand towns are influenced by the weather, topography, buildings and home-heating behaviour. Regional councils need that evidence to design effective intervention strategies.
NIWA adopted small towns to test networks of new low-cost air and emission monitoring sensor technologies. Poor air quality is a problem during winter in many New Zealand regions. Air pollution can have a significant detrimental effect on human health.
NIWA participates in the Total Carbon Column Observing Network, a ground-based observing network dedicated to making precise and accurate measurements of greenhouse gas concentrations in different parts of the atmosphere.
In 2004, scientists added iron salts to surface Sub-Antarctic waters east of New Zealand's South Island to determine whether this stimulated phytoplankton growth, and to examine the exchange of carbon dioxide (CO2) and trace gases between the atmosphere and ocean.
This project aims to estimate emissions of the greenhouse gases methane (CH4) and nitrous oxide (N2O) from New Zealand's pastoral farming systems, and to estimate the effectiveness of different approaches to reducing these emissions.