This inventory estimates the emissions to air in the Auckland region from four major sectors (transport, domestic, industry and biogenic) with emphasis on emissions of four key ambient air pollutants (PM10, NOx, CO, VOCs), assuming a base year of 2004. Emissions are broken down:
sectorally (for the four major categories) spatially (for the entire region versus the urban area only), and seasonally (for a typical winter’s day versus a typical summer’s day). An Auckland Air Emissions Inventory was first prepared in 1993.