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

creases, their contributions in 2003 are 0.9% and 0.8% respectively. It is also new to
this analysis that CO 2 from mobile combustion navigation is a key source according to
level, it contributes with 0.8% in 2003.
In the Industrial Sector, 3 sources are in 2003 - as in 2002 - keys with respect to both
level and trend. The 3 keys in 2003 and in 2002 are CO 2 emissions from cement production,
emission from substitutes for ozone depleting substances (HFCs and PFCs)
and N 2 O emission from nitric acid production. The latter source was new in 2002. The
trends from year 1990 to 2003 for these sources are increasing emissions from the cement
production and from substitutes for the ozone depleting substances (HFCs and
PFCs) (trend from 1995), while N 2 O emissions from nitric acid production decrease.
As regards the level assessment the cement production contributes with 1.9% (2.1% in
2002), nitric acid production with 1.0% (1.1% in 2002) and substitutes for ozone depleting
substances (HFCs and PFCs) with 1% (as in 2002).
In the Agricultural Sector, 5 sources, which includes all sources in the categorisation
used, are keys with respect both to level and trend. In 2002, 2001 and 2000 only 3
sources of those sources were keys. These 3 key categories are direct N 2 O emissions
from agriculture soils, indirect N 2 O emissions from nitrogen used in agriculture and
CH 4 from enteric fermentation. The emission estimates for these 3 sources represent a
reduced emission from 1990 to 2003. According to level assessment these sources are
among the 7 most contributing sources, with direct N 2 O emissions from agriculture
soils contributing with 3.9% (in 2002 4.3% and in 2001 6.5%), indirect N 2 O emissions
from nitrogen used in agriculture contributing with 3.7% (in 2002 4.1% and in 2001
4.3%) and CH 4 from enteric fermentation with 3.7% (in 2002 4.1% and in 2001 4.0%).
The sources CH 4 emission from manure management and N 2 O from manure management
has in this analyses also become key sources for level and trend, in 2002 they
were key sources for level only. The emission estimates of CH 4 from manure management
represent an increasing trend in 1990-2003 and the emission estimates of
N 2 O from manure management represents a decreasing trend in 1990-2003. According
to the level assessment the contribution in 2003 from these two sources is 1.3%
and 0.8%, respectively.
In the Waste Sector, 1 source - CH 4 emissions from solid disposal of waste – is a key
source both with respect to level and trend. The contribution from 1990 to 2003 is decreasing,
the level in 2003 being 1.6%. The other sources, which are new to this submission
- CH 4 and N 2 O from wastewater handling - are not key sources.
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