Report - DCE - Nationalt Center for Miljø og Energi

estimated emissions in the subsectors are considerable, but the total emissions
in sector 1A2 are relatively low.
The emissions from residential wood combustion have been recalculated
based on improved technology disaggregation data. In addition the
NMVOC emission factor has been improved for new stoves resulting in a
decreased emission from this sector.
The NOx emission factor for natural gas consumption in large power plants
has been updated according to Danish legislation 1 .
The NMVOC emission factor for refineries have been included or revised for
several years. This results in improved time series but also in large relative
changes for some years.
The PM10 and PM2.5 emission factors for wood and straw have been recalculated
to improve consistency with the TSP emission factor.
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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 air-
1 However, in general plant specific emission data are available.