CO₂e: Greenhouse gases like methane (CH4) have different impacts on the atmosphere than carbon dioxide (CO2). To make comparisons easier, CO2 equivalents (CO2e) are used. This converts the impact of methane into the amount of CO2 that would cause the same warming over a set time period (usually 100 years).

Pasture Methane Definition: After livestock graze, manure and urine are deposited directly onto the pasture. In these spots, organic material can break down under low-oxygen conditions, especially in wet soils. This process can produce small amounts of methane.

Effluent Pond Methane Definition: In Effluent Ponds, the organic matter within the stored manure breaks down in an environment without oxygen (anaerobic conditions). This process produces methane as a byproduct. The warmer and more nutrient-rich the pond, the more methane is generated.

Enteric Methane Definition: Enteric methane is a greenhouse gas produced during the digestion process of ruminant animals like cows and sheep. When these animals break down feed in their rumen, microbes help with fermentation, which releases methane. This methane is then mostly expelled by the animal through burping.

The methane emission values shown here are estimates based on national average data and the AIM methodology used in the New Zealand Greenhouse Gas Inventory.

They represent a typical New Zealand dairy farm and may not reflect the specific circumstances of individual farms. For a more accurate assessment, use farm-specific data.