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Characterisation Method Information
Characterisation Method Name:
N2O impact on wood
Version:
1999
Date Completed:
1999
Principal Method Name:
EPS: global warming pathway and NOx-transformation pathway
Method Description:
Model 1, global warming pathway

The characterisation factor is determined by an equivalency method using CO2 as a reference.

The global warming potential for N2O on a 100 years basis is 320 (IPCC 1995).

The global warming pathway specific characterisation factor of CO2 for wood loss is determined in "CO2 impact on wood" to - 1.16E-03 kg wood DS(Dry Substance)/kg CO2. Therefore the characterisation factor of N2O for wood is -320*1.16E-03 = - 0.371 kg wood (DS)/kg N2O.

Model 2, NOx-transformation pathway
The characterisation factor is determined by an equivalency method using NOx as a reference.

In "N2O impact on YOLL", the equivalency factor was determined to 1.35 kg NOx (NO2).

The characterisation factor of NOx for wood is determined in "NOx impact on wood" to -2.74 kg wood /kg NOx. Therefore the characterisation factor of N2O for morbidity is 1.35*(-2.74) = -3.69 kg wood/kg N2O.

Calculation of characterisation factor

The total characterisation factor is thus (0.371+3.69) = 4.06 kg wood/kg N2O.
Literature Reference:
Houghton, J.T Jenkins, G.J. and Ephraums, J.J., (Ed.) (1990) Climate change The IPCC scientific assessment. Cambridge University Press
Methodological Range:
The impact is of global character. The modelled system is therefore global. The temporal system borders are 100 years (1990-2090). The society effected is the one described in IPCC scenario IS92A. (IPCC, 1990).
Notes:

Existing Characterisation Factors of N2O impact on wood
Characterisation Parameter Category Indicator Impact Indication Principle Aspect Substance Quantity Unit Notes
CFactor Wood EPS/2000
Type = Emission
Direction = Output
Media = Air
Geography = *
N2O -4.06 kg/kg 2 pathways