Funded by the Ministry of Health, NIWA air quality researchers are carrying out research to understand ventilation behaviour and examine how well spaces used by our most vulnerable populations are, and could be, ventilated.
Almost half of Aotearoa New Zealand’s CO2-equivalent greenhouse gas emissions come from agriculture. This is a much higher proportion than most other countries – globally, agricultural emissions average around 7.5% of a country’s total emissions.
Methane (CH4) is the second most important greenhouse gas after CO2 that is produced by human activities. While most of the anthropogenic emissions of CO2 are from industrial processes, most anthropogenic CH4 emissions are from agriculture.
There is a marked seasonal cycle in surface ozone (O3), with a maximum in winter and minimum in summer. There can also be significant variability from day to day caused by synoptic scale meteorological variations.
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.