Report - DCE - Nationalt Center for Miljø og Energi

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factors, 1985 - 2009. Considerable variation between years can reveal miscalculations
or changes in methods. These variations are checked and errors
have been rectified. There have been some problems related to the implementation
of the new database system IDA – especially in connection to the
data of nitrogen. Now a quality check procedure are provided which include
annually check for all activity data, emission factor and implied emission
factors.
Activity data and emission factors are collected and discussed in cooperation
with specialists and researchers at different institutes and research sections.
As a consequence, both data and methods are evaluated continuously according
to latest knowledge and information. A more detailed description of
quality assurance and quality control is given in the Denmark´s National Inventory
Report 2010 - submitted under the United Nations Framework Convention
on Climate Change. (http://www.dmu.dk/Pub/FR784.pdf).
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Compared with the previous NH3 and PM emissions inventory (submission
2011), some changes and updates have been made. These changes cause a
decrease in the NH3 emission (1985 – 2009) and a decrease in the PM emission
(2000 – 2009), see Table 6.19.
Emission of NH3 has decreased 1-3% in the period 1985-2009 compared to
the submission 2011. The main reason for the decrease is an adjustment of
emission factors for synthetic fertilisers. The emission factors have been updated
in cooperation with the Danish Plant Directorate.
The PM emission decreases because a technical error in the calculation of
PM from animal husbandry has been corrected.
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There have been no changes in the methodology.
In the following some further changes are mentioned, which has minor influence
on the total emissions:
The calculation of number of produced bulls has been changed to being
based on slaughtering data from DSt instead of annually census. An error in
the calculation of number of weaners and fattening pigs has been corrected.
Further more have the time series of the distribution of animals on deferent
housings types been reviewed by experts. These changes in activity data
have influence on both NH3 and PM emissions.