1. Indirect emissions

2. Indirect emissions
Nitric oxide (NO) emissions resulting from deposition of N in the atmosphere
Agriculture (mainly ammonia)
Transport and industry (various compounds)
Ammonia emissions from marine areas
N input from rivers, runoff from land and atmospheric deposition

3. Status and how to proceed
No funding = no progress
Nitric oxide (NO)
Make emission factor % of N deposited? (≡ N2O reporting under IPCC)
Activity data?
Ammonia emissions from marine areas
Make emission factor % of N input from land
Activity data from EMEP and ??