Dear EEA,<br />I am very interested in ammonia emission factors. And in EMEP/EEA air pollutant emission inventory guidebook 2016, there are many sectors in the 'Inorganic N-fertilizers' category. I know that many things were used to calculate the emission factors, and I think the application rate of fertilizers was considered to make emission factors of inorganic N-fertilizers. How do you get the application rate data? Using the sales volume or survey? And how do you solve the problem that the variety properties of fertilizers(ex. different N, P, K rate by fertilizers...)?
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