|Characterisation Method Name:|
|N2O impact on NEX|
|Principal Method Name:|
|EPS: global warming pathway and NOx-transformation pathway|
|NEX is Normalised EXtinction of species.|
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 characterisation factor of CO2 for NEX is determined in "CO2 impact on NEX" to 1.26E–14 /kg CO2. Therefore the characterisation factor of N2O for NEX is 320*1.26E–14 = 4.03E–12 /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 NEX is determined in "NOx impact on NEX" to 7.50E-14 per kg NOx. Therefore the characterisation factor of N2O for NEX is 1.35*7.50E-14 = 1.01E-13 /kg N2O.
Calculation of characterisation factor
The total characterisation factor is therefore estimated to 4.03E–12 +1.01E-13 = 4.13E-12 /kg N2O.
|Houghton, J.T Jenkins, G.J. and Ephraums, J.J., (Ed.) (1990) Climate change – The IPCC scientific assessment. Cambridge University Press|
|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).|
|Characterisation Parameter||Category Indicator||Impact Indication Principle||Aspect||Substance||Quantity||Unit||Notes|