Denmark's National Inventory Report 2005 - Submitted under the ...

When new data are introduced they can be implemented in accordance with the QA/QC structure
of the inventory
Level 2, compilation of external data
Preparation of input data for the emission inventory based on the external data sources. Some external
data may be used directly as input while others need to be interpreted using more or less
complicated models. The interpretation of activity data is to be seen in connection to availability of
emission factors. These models are compiled and processed as an integrated part of the inventory
work.
Level 3, Handling of data directly usable for the inventory
Level 3 represents data that have been prepared and compiled in a form that is directly applicable
for calculation of emissions. The compiled data is structured in a database for internal use as a link
between more or less raw data and data that is ready for reporting.
The data is compiled in a way that elucidates the different approaches in emission assessment:
(1) Some parts of the inventory especially larger point sources is based directly on emission
sources as:
(a) 6Q as the number of source units having the uncertainty
∆6Q
(b) 6V as the strength (release rate) for a single source unit having the uncertainty ∆
(2) Other inventory data is based on activities and emission factors as:
(a)
(b)
$Q as the number of activity units having the uncertainty
∆ $Q .
$V as the strength (release rate) of every activity unit having the uncertainty
Level 4, Calculation of inventory figures
6V
∆ $V .
The emission for a sub category j (E j
) is calculated including the uncertainty (∆E j
) from all sectors
and activities. The summation of all contributions from sub sources makes the inventory at level 4
as
( ∆ ( = ( ± ∆
± ∑
(
where E j is the total emission for a specific greenhouse gas and a specific sub category, ∆E j is the
total related uncertainty. The emission is calculated for each type of release using either a source or
activity based approach as described as described at level 3 and by the following two equations:
Based directly on known emission sources :
( ) ( )
6Q ± ∆6Q
⋅ 6V ± 6V
( ± ∆(
=
∆
Based on activity estimates:
( ) ( )
$Q ± ∆$Q
⋅ $V ± $V
( ±
∆(
=
∆
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