Emissions factors for the calculation of GHG emissions, including the uncertainty estimates of the factors (DISER 2020a)
| Emission source | Key parameters/model | Uncertainty |
|---|---|---|
| Enteric CH4 - sheep (pastured) | Intake (kg DM / head/day) × 0.0188 + 0.00158 | ± 25% |
| Enteric CH4 - cattle (pastured) | Intake (kg DM / head) × 20.7/1000 | ± 25% |
| Manure CH4 (temperate climate) | 0.003 kg CH4 / kg dry matter manure | ± 55% |
| Manure N2O | 0.004 kg N2O-N / kg N in urine and faeces | ± 55% |
| Synthetic Fertiliser N2O | 0.002 kg N2O-N / kg N applied | ± 56% |
| Organic Fertiliser N2O | 0.01 kg N2O-N / kg N applied | ± 56% |
| Atmospheric deposition (Synthetic Fertiliser) N2O | 0.11 kg N / kg N applied | ± 56% |
| Atmospheric deposition (Organic Fertiliser) N2O | 0.21 kg N / kg N applied | ± 56% |
| Atmospheric deposition (manure, urine, faeces) N2O | 0.21 N / kg N applied | ± 56% |
| Indirect nitrous oxide from leaching and runoff | 0.24 kg N leached / kg N applied | ± 56% |
| 0.011 kg N2O-N / kg N leached or in runoff | ± 56% | |
| Lime application CO2 | 0.12 * 0.9 kg CO2 / kg limestone applied | ± 54% |
| Urea application CO2 | 0.2 kgCO2/kg urea applied | ± 51% |
| Emission source | Key parameters/model | Uncertainty |
|---|---|---|
| Enteric CH4 - sheep (pastured) | Intake (kg DM / head/day) × 0.0188 + 0.00158 | ± 25% |
| Enteric CH4 - cattle (pastured) | Intake (kg DM / head) × 20.7/1000 | ± 25% |
| Manure CH4 (temperate climate) | 0.003 kg CH4 / kg dry matter manure | ± 55% |
| Manure N2O | 0.004 kg N2O-N / kg N in urine and faeces | ± 55% |
| Synthetic Fertiliser N2O | 0.002 kg N2O-N / kg N applied | ± 56% |
| Organic Fertiliser N2O | 0.01 kg N2O-N / kg N applied | ± 56% |
| Atmospheric deposition (Synthetic Fertiliser) N2O | 0.11 kg N / kg N applied | ± 56% |
| Atmospheric deposition (Organic Fertiliser) N2O | 0.21 kg N / kg N applied | ± 56% |
| Atmospheric deposition (manure, urine, faeces) N2O | 0.21 N / kg N applied | ± 56% |
| Indirect nitrous oxide from leaching and runoff | 0.24 kg N leached / kg N applied | ± 56% |
| 0.011 kg N2O-N / kg N leached or in runoff | ± 56% | |
| Lime application CO2 | 0.12 * 0.9 kg CO2 / kg limestone applied | ± 54% |
| Urea application CO2 | 0.2 kgCO2/kg urea applied | ± 51% |
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