Folie 1

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Updating Chapter 10 09 of the Atmospheric
Emission Inventory Guidebook
Ulrich Dämmgen1 and Nicholas John Hutchings2UN
ECE Task Force on Emission Inventories and
Projections,Agriculture and Nature Panel1
Federal Agricultural Research Centre , Institute
of Agroecology, Braunschweig, Germany 2 Dept of
Agroecology, Danish Institute of Agricultural
Sciences, Research Centre Foulum, Tjele, Denmark.
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State of the present chapter The present
chapter 10 09 Manure Management Regarding
Nitrogen Compounds dates from 2002 Aims of the
new version

• Updating the data base
• Improving the calculation procedure

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• Structure of the present chapter remains
  unchanged
• Compounds considered ammonia, nitric oxide,
  nitrous oxide
• Minor changes Definitions extended
• Major change Detailed methodology revised

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Comprehensive treatment of the nitrogen flow in
animal husbandry means All N compounds in ONE
calculation procedure, which is related to energy
balance and C flow calculations Calculation
procedures shall not contradict other existing UN
ECE documents and shall be in in line with IPCC
methodologies.
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• The detailed method is a stepwise approach
  (cook book approach)
• Identification of relevant animal numbers
• (proposing relevant subcategories)
• Calculation of the amount of N excreted per
  animal or place in the house, in yards or during
  grazing and
• calculation of the TAN excreted per animal or
  place in the house, in yards or during grazing
• including inputs with bedding material and
  various housing systems for most animal
  categories

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Housing In the animal house, only NH3 emissions
are considered. Relative emission factors are
obtained from other UN ECE documents (such as the
Framework Advisory Code of Good Agricultural
Practice). Absolute figures are proposed for the
reference system
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• Storage
• Calculation of the amount of N immobilized in
  solid systems and of the N emitted as N2O, NO and
  NH3 during storage considering various storage
  types for liquid and solid systems
• N2O emissions are treated as in the IPCC
  guidelines (transformation to TAN based emission
  factors necessary)
• NO emission factors ordered (will be available
  in time)

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Application Only NH3 emissions directly related
to spreading are considered. Relative emission
factors are obtained from other UN ECE documents
(such as the Framework Advisory Code of Good
Agricultural Practice). Absolute figures are
proposed for the reference system. When the N
has passed the soil surface, subsequent emissions
are treated as emissions from plants and soil.
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Most tables in the present 10 09 are
placeholders, to be discussed between the expert
panel members in the near future (volunteers
needed!). 10 09 will contain an appendix with
national values (as before). This appendix will
also be updated in order to cover a wider
geographical area (volunteers needed).
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• What needs to be done?
• The IPCC draft version of Modul 4 of the 2006
  Guidelines is likely to be available soon. Data
  are to be compared and incorporated (N excretion
  defaults N2O emission factors)
• The chairmen will try to write a final draft in
  May 2006.
• The chapter will be circulated and discussed
  between (volunteers) and sent to the Task Force
  secretariat in July/August.

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• Promised in the Guidelines
• Technical support
• A worked example of the use of these steps is
  provided at the TFEIP web-site

• Questions likely to remain open
• Treatment of poultry in the detailed methodology

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