Report - DCE - Nationalt Center for Miljø og Energi

The time series of emissions for mobile machinery in the agriculture, forestry,
industry, household and gardening (residential), and inland waterways
(part of navigation) sectors are less certain than time series for other
sectors, since DEA statistical figures do not explicitly provide fuel consumption
information for working equipment and machinery.
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It is the intention to publish every second year a sector report for road transport
and other mobile sources. The last sector report concerned the 2006 inventory
(Winther, 2008b).
The QA/QC descriptions of the Danish emission inventories for transport
are given in Nielsen et al. (2011).
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The following recalculations and improvements of the emission inventories
have been made since the emission reporting in 2011.
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The total mileage per vehicle category from 1985-2009 have been updated
based on new data prepared by DTU Transport. Important changes are a different
split of total mileage between gasoline and diesel passenger cars
based on data for the year 2008 from the Danish vehicle inspection and
maintenance programme. Also updated mileage for foreign vehicles driven
on Danish roads has been included.
The percentage emission change interval and year of largest percentage differences
(low %; high %, year) for the different emission components are:
SO2 (0 %; 0.2 %, 2009), NOx (-3.5 %; -1.1 %, 2000), NMVOC (-0.2 %; 0.5 %,
2009), CO (0.2 %; 2.6 %, 2009), NH3 (-0.2 %; 1.0 %, 1990) and Particulates (-0.9
%; 4.6 %, 2009).
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The sales distribution into engine sizes for harvesters has been updated for
the years 2002, 2003 and 2009. The following largest percentage differences
(in brackets) for agriculture/forestry/fisheries are noted for: SO2 (-0.1 %),
NOx (-0.1 %), NH3 (-0.3 %) and Particulates (0.1 %).
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Emission factors derived from the new road transport simulations have
caused some emission changes from 1985-2009. The following largest percentage
differences (in brackets) are noted for: SO2 (0 %), NOx (-3.7 %),
NMVOC (-2 %,), CO (5.8 %), NH3 (2.9 %) and Particulates (4.3 %,).
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Emission changes occur for the years 2007-2009, due to a correction in the
representative aircraft type for new aircraft used for flying in Denmark. Due
to an error F28 was previously used as a representative aircraft type for the
new aircraft types CRJ9, E70, E170 and E175. However, F28 is a very old aircraft
which cannot represent these new aircraft types. Instead new fuel consumption
and emission factors have been calculated for the CRJ9, E70, E170
and E175 jets.