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Characterisation Method Information
Characterisation Method Name:
Mathane impact on morbidity
Version:
1999
Date Completed:
1999
Principal Method Name:
EPS: global warming pathway
Method Description:
Model

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

Equivalency factor

The GWP100 was estimated by IPCC (Intergovernmental Panel on Climate Change)to 24.5 (1994).

Calculation of characterisation
factor

The characterisation factor for CO2 is determined to 6.55E–07 person-years/kg,
which means that the characterisation factor of methane for morbidity is 24.5*6.55E–07 =
1.60E–05 person-years/kg.
Literature Reference:
1. IPPC, “The 1994 Report of the Scientific Assessment Working Group of IPCC. Summary for policymakers”, WMO and UNEP, 1994
Methodological Range:
Including emissions from anywhere at the globe 1990 and considering a mean residence time of around 15 years for methane (IPCC, 1994), the environmental system be global. For the global warming pathways, the same system borders as for CO2 is relevant, i.e. 100 years.
Notes:

Existing Characterisation Factors of Mathane 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 = *
CH4 1.6E-05 p yr/kg Global warming