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Characterisation Method Information
Characterisation Method Name:
Mathane impact on NEX
Date Completed:
Principal Method Name:
EPS: global warming pathway
Method Description:
NEX is Normalised EXtinction of species.


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 of CO2 for NEX is 1.26E14 per kg CO2 . Thus the characterisation factor of NEX is 24.5*(1.26E14 ) = 3.09E13 per kg methane.
Literature Reference:
Steen B (1999b): A systematic approach to environmental priority strategies in product development (EPS). Version 2000 Models and data of the default method CPM report Chalmers University of Technology Sweden
Methodological Range:
The pathway modelled is via global warming. The same system borders as for CO2 is used i.e 100 years.

Existing Characterisation Factors of Mathane impact on NEX
Characterisation Parameter Category Indicator Impact Indication Principle Aspect Substance Quantity Unit Notes
CFactor NEX EPS/2000
Type = Emission
Direction = Output
Media = Air
Geography = *
CH4 3.09E-13 NEX/kg Global warming