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

Combustible” and “Other not Combustible” and that C is “Waste food”. And we calculated a
mean fraction of those categories to be used in the default methodology.
Table 8.10. IPCC default methodology for CH 4 emissions from SWDS for 1990-2003
Parameter Reference 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003
Population 1000 cap 5140 5153 5170 5188 5208 5228 5248 5268 5287 5305 5322 5338 5351 5384
MSW Waste generation rate Table 6-1 kg/cap/year 1,26 1,26 1,26 1,26 1,26 1,26 1,26 1,26 1,26 1,26 1,26 1,26 1,26 1,26
MSWT Waste generation GL Table 6-1 Gg/year 2364 2370 2378 2386 2395 2404 2414 2423 2431 2440 2448 2455 2461 2476
MSWF Fract. of waste to SWDS GL Table 6-1 0,20 0,20 0,20 0,20 0,20 0,20 0,20 0,20 0,20 0,20 0,20 0,20 0,20 0,20
MCF Methan Corr Factor GPG p 5.8 1 1 1 1 1 1 1 1 1 1 1 1 1 1
DOC Degr Organic C GPG p 5.9 0,19 0,19 0,19 0,19 0,19 0,19 0,19 0,19 0,19 0,19 0,19 0,19 0,19 0,19
DOCF Fract DOC diss GPG p 5.9 0,55 0,55 0,55 0,55 0,55 0,55 0,55 0,55 0,55 0,55 0,55 0,55 0,55 0,55
F Fractio CH4 in gas GPG p5.10 0,5 0,5 0,5 0,5 0,5 0,5 0,5 0,5 0,5 0,5 0,5 0,5 0,5 0,5
Lo Methan gener. pot GPG p5.8 0,07 0,07 0,07 0,07 0,07 0,07 0,07 0,07 0,07 0,07 0,07 0,07 0,07 0,07
R Danish Energy statistics Gg CH4/year 0,5 0,7 1,4 1,7 4,6 7,4 8,2 11,1 13,2 11,5 11,0 10,0 10,0 8,3
OX Oxid. Factor GPG p5.10 0,1 0,1 0,1 0,1 0,1 0,1 0,1 0,1 0,1 0,1 0,1 0,1 0,1 0,1
CH4 emissions Gg CH4/year 29,7 29,6 29,1 28,9 26,4 24,0 23,5 20,9 19,2 20,8 21,3 22,3 22,4 24,1
The table shows that the default methodology underestimates both the amounts of deposited
waste and the CH 4 emissions by a factor 2-3. The reason is that the default methodology does not
seem to include Industrial Waste, which to a high degree is deposited in Denmark, Table 8.8.
A further option in the default methodology is to include the registered total waste amount with
the generation rate of waste for total waste and include the fraction of deposited waste to SWDS,
Table 8.11. The fraction as well as the generation rate for total waste is included in the CRF Table 6
A,C “Additional inf”.
Table 8.11. As Table 8.10 but with registered fraction of waste deposited to SWDS.
Parameter Reference 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003
Population 1000 cap 5140 5153 5170 5188 5208 5228 5248 5268 5287 5305 5322 5338 5351 5384
MSW Waste generation rate ISAG kg/cap/year 5,4 5,5 5,6 5,7 5,8 6,0 6,7 6,7 6,3 6,3 6,7 6,6 6,7 6,5
MSWT Waste generation GL Table 6-1 Gg/year 10169 10403 10637 10871 11105 11466 12912 12857 12233 12233 13031 12768 13105 12835
MSWF Fract. of waste to SWDS ISAG 0,30 0,28 0,27 0,25 0,23 0,24 0,20 0,16 0,15 0,12 0,11 0,10 0,09 0,08
MCF Methan Corr Factor GPG p 5.8 1 1 1 1 1 1 1 1 1 1 1 1 1 1
DOC Degr Organic C GPG p 5.9 0,19 0,19 0,19 0,19 0,19 0,19 0,19 0,19 0,19 0,19 0,19 0,19 0,19 0,19
DOCF Fract DOC diss GPG p 5.9 0,55 0,55 0,55 0,55 0,55 0,55 0,55 0,55 0,55 0,55 0,55 0,55 0,55 0,55
F Fractio CH4 in gas GPG p5.10 0,5 0,5 0,5 0,5 0,5 0,5 0,5 0,5 0,5 0,5 0,5 0,5 0,5 0,5
Lo Methan gener. pot GPG p5.8 0,07 0,07 0,07 0,07 0,07 0,07 0,07 0,07 0,07 0,07 0,07 0,07 0,07 0,07
R Danish Energy statistics Gg CH4/year 0,5 0,7 1,4 1,7 4,6 7,4 8,2 11,1 13,2 11,5 11,0 10,0 10,0 8,3
OX Oxid. Factor GPG p5.10 0,1 0,1 0,1 0,1 0,1 0,1 0,1 0,1 0,1 0,1 0,1 0,1 0,1 0,1
CH4 emissions Gg CH4/year 194,9 187,4 178,9 170,2 158,7 168,8 157,4 121,2 105,2 83,3 81,5 72,4 66,2 58,0
The result of this adjusted default methodology is CH 4 emissions, which in the beginning of the
time-series represent highly overestimated emissions and in the later part of the time-series represent
underestimated emissions compared to the results of the FOD model. One explanation is that
the FOD model reflects the ongoing process through the years with the generation of CH 4 from
waste deposited in previous years, while the default method only estimates emissions reflecting
the waste deposited the same year.
8.2.5 Recalculations
For the submissions in 2005 recalculations were carried out as compared to the final submission in
2004 of inventories 1990-2002. The recalculation is a minor correction and solely due to updates in
the energy statistics of the uptake of CH by installations at SWDS’ for energy production. For 1998
4
the correction of the actual CH emission is –4.8% and for the other years the numeric correction is
4
below 3%, refer to recalculation tables of the CRF submitted in parallel to this NIR.
197