Using the EU farm sustainability data network to inform GHG and ammonia national inventory accounts

This research demonstrates how the EU Farm Accountancy Data Network (now Farm Sustainability Data Network) can be used to generate more accurate farm-level activity data to inform national inventory accounts for GHG and NH 3 at a EU member state level. In an effort to reduce gaseous emissions from agriculture, farmers are persistently encouraged to change farm practices or adopt new technologies, yet it can to difficult to capture these changes and hence claim credit for these efforts in the national inventories. Until recent times, a historic survey method was used to capture important farm-level activity manure management based data (animal housing periods, structure of management facilities, timing and method of slurry spreading) in Ireland. The FADN is now used to inform this on a temporal basis in Ireland. Results here suggest that if this transition had not occurred then NH 3 emissions could have been overestimated by up to 34% and GHG emissions by up to 7.5%, depending on the category in question. • FADN /FSDN used to inform national GHG / NH 3 inventories • Template for other EU member states to follow • Credit for farmer practice change • Significant impact on gaseous emissions modelling results