TATION AARHUS UNIVERSITY Agriculture and Nature Panel Stockholm 2011 Nick Hutchings, Barbara Amon and Rainer Steinbrecher 1

AARHUS UNIVERSITY Agriculture and Nature Panel agenda  Workplan  Revisit NH 3 emissions from crops  Information on other relevant activities  Workplan

AARHUS UNIVERSITY Workplan  Review of non-methane volatile organic compounds (NMVOC) emissions from manure management systems (4B).  Review of ammonia emissions from fertilisers (4D).  Update information on NMVOC emissions from natural vegetation – No progress  Develop methodology for ammonia emissions from biogas production (4B)

AARHUS UNIVERSITY NMVOC emissions from manure management – last year  Guidebook recognizes existence of emissions but provides no methodology  Previous attempt – unrealistically high emission factors  Were aware of ongoing measurement program in the USA  Postponed decision until this year

AARHUS UNIVERSITY NMVOC emissions from manure management – current status  Measurements in US are completed but not available  Options:  Use the US approach  Use modified US approach  Wait until next year to decide

AARHUS UNIVERSITY NMVOC emissions from manure management – conclusion  Wait until next year  US results available  Establish a methodology and default emission factors (no more excuses!)  New source?  NMVOC emissions from silage  10 times greater than from manure management  One study

AARHUS UNIVERSITY Ammonia emission from fertilisers  Current section is out of date  No progress to report  Insufficient resources  Suggest carrying item over to Work Plan

AARHUS UNIVERSITY Emissions from biogas production  Increasing biogas production  Originally a means to manage animal manure  Increasingly used to generate biogas from energy crops

AARHUS UNIVERSITY Emissions from biogas production  Nitrous oxide, NMVOC, ammonia, nitric oxide  Include nitrous oxide in Guidebook method – maintain nitrogen budget  Agreed:  Structure of adapted Tier 2 4B methodology  Partition emissions between NFR codes 4B, 1A1 and 6C  Circulate revised text prior to TFEIP 2012

AARHUS UNIVERSITY Ammonia emission from crops  Guidebook recognized existence of emissions but provides no methodology  Agreed last year to a default Tier 1 emission factor  Temporary value until better data becomes available  Suggest no change  Continue to monitor the literature  Denmark to provide documentation of default emission factor

AARHUS UNIVERSITY Information on related activities  Diredate project  Data collection to support agri-environmental indicators (incl. NH 3 )  New Swiss NH 3 inventory model  Comparison of national NH 3 emission factors  Activities of Task Force on Reactive Nitrogen (TFRN)  European Nitrogen Assessment

AARHUS UNIVERSITY Working practices in Panel  Mainly inventory compilers  Research scientists go to TFRN meetings  Better communication with scientific community  Closer co-operation with TFRN Expert Panel on Mitigation of Agricultural Nitrogen

AARHUS UNIVERSITY Workplan  Review of non-methane volatile organic compounds (NMVOC) emissions from manure management systems (4B). Integrate US results when available.  Review of ammonia emissions from fertilisers (4D).  Update information on NMVOC emissions from natural vegetation  Finalise methodology for emissions from biogas production (4B)