Section 3.3

Baseline Emissions Calculation

This section outlines the methodology for calculating baseline emissions, based on historical data related to synthetic fertilizer use. The formula used is shown below and entails project-specific data, such as the type and quantity of fertilizer applied, alongside default emission values for estimating associated emissions. Table 1 provides a description of the parameters used in the formula. This methodology establishes the baseline emissions, which serves as the reference point for measuring future emission reductions resulting from the project.

E_{baseline} = \sum_{n=i} \left( N_{base,a,i} \times EF_{base,d,i} + N_{base,v,i} \times EF_{base,v,i} + N_{base,l,i} \times EF_{base,l,i} \right) \times \text{N to N}_2\text{O} \times \text{N}_2\text{O to CO}_2

(3.3)

Where $i$ is the type of synthetic fertilizer.

Parameter	Description	(Default) Value	Source
$N_{base,a,i}$	Amount of synthetic fertilizer applied in the baseline year (t N/ha)	Variable (project-specific)	Farm records, receipts
$EF_{base,d,i}$	Direct emission factor for synthetic fertilizers	Derive from Table 11.1	IPCC Volume 4, Chapter 11 (2006, updated 2019)
$N_{base,v,i}$	Amount of nitrogen volatilized (fraction of applied nitrogen)	Variable (project-specific)	IPCC Volume 4, Chapter 11 (2006, updated 2019)
$EF_{base,v,i}$	Emission factor for volatilized nitrogen	Derive from Table 11.3	IPCC Volume 4, Chapter 11 (2006, updated 2019)
$N_{base,l,i}$	Amount of nitrogen leached (fraction of applied nitrogen)	Variable (project-specific)	IPCC Volume 4, Chapter 11 (2006, updated 2019)
$EF_{base,l,i}$	Emission factor for leached nitrogen	Derive from Table 11.3	IPCC Volume 4, Chapter 11 (2006, updated 2019)
N to N₂O	Molecular weight ratio to convert N₂O-N to N₂O	1.57	IPCC Volume 4, Chapter 11 (2006)
N₂O to CO₂	N₂O to CO₂ conversion factor	310	IPCC Volume 4, Chapter 11 (2006)

Table 1: Parameters for Baseline Emissions Calculation

Total Emission Reduction Project Emissions Calculation