1. Crop and crop residue emissions

2. Crop ammonia emissions
Methodology proposed by contractors was rejected by the ad hoc group
No methodology available
In a dialogue with EMEP (on-going project)
Challenge: methodology that is practical and scientifically defendable
Dialogue with modellers is part of Work Plan
Empirical data available?

3. Crop residue ammonia emissions
N inputs in crop residues are available (UNFCCC reporting)
Uncertainty about NH3 emission factors
Need a better review of literature?
Add to Work Plan