Select another Impact Assessment Method
Back to EPS default 2000

Characterisation Method Information
Characterisation Method Name:
N2O impact on morbidity
Version:
1999
Date Completed:
1999
Principal Method Name:
EPS: global warming pathway and NOx-tranformation 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 characterisation factor of CO2 for morbidity is determined in "CO2 impact on morbidity" to 6.55E07 person-years/kg CO2. Therefore the characterisation factor of N2O for severe morbidity is 320*6.55E07 = 2.10E04 person-years /kg N2O.

Model 2, NOx-tranformation 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 morbidity is determined in "NOx impact on morbidity" to 3.6110 -6 person-years/kg NOx. Therefore the characterisation factor of N2O for morbidity is 1.35*3.61E-06 = 4.87E06 person-years /kg N2O.

Calculation of characterisation factor

The total characterisation factor is thus 2.10E04 + 4.87E06 = 2.14E04 person-years /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 (Intergovernmental Panel on Climate Change)scenario IS92A. (IPCC, 1990).
Notes:

Existing Characterisation Factors of N2O impact on morbidity
Characterisation Parameter Category Indicator Impact Indication Principle Aspect Substance Quantity Unit Notes
CFactor Morbidity EPS/2000
Type = Emission
Direction = Output
Media = Air
Geography = *
N2O 2.14E-04 p yr/kg 2 pathways