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Characterisation Method Information
Characterisation Method Name:
PM10 impact on morbidity
Date Completed:
Principal Method Name:
EPS: acute effects and global warming pathways
Method Description:
Model 1, acute effects

The characterisation factor is determined by an empirical method.

Category indicator value in system considered

ExternE (1995) estimate the exposure-response functions for ‘shortness in breath’ days for asthmatics to 0.14 per person-days per asthmatic per year per mg/m 3 . A rough
estimation of the number of asthmatics in the world is that 10% of the OECD (Organisation for Economic Co-operation and Development) population of 1.2 billion is asthmatics and none outside OECD. This gives 0.1*1.2E+09 *0.14/365*30 = 1.38E+06 person-years of morbidity, where 30 mg/m 3 is the estimated average PM10 concentration in the OECD countries (see "PM10 impact on YOLL").

Contribution to category indicators value from a flow unit

The same contribution apply as for model 1 in section "PM10 impact on YOLL", i.e. 2/3E-11 per kg of PM10.

Calculation of pathway specific characterisation factor

1.38E+06 *2/3E-11 = 9.20E-06 person-years/kg PM10.

Model 2, global warming pathway

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

Equivalency factor

The GWP for PM10 was determined to – 8.54 in section "PM10 impact on YOLL"

Calculation of pathway specific characterisation factor

The characterisation factor for CO2 with respect to morbidity was determined to 6.55E–07 person-years/kg CO2. Thus we obtain the characterisation factor for PM10 to –8.54*6.55E–07 = - 5.59E-06 person-years/ kg PM10.

Calculation of characterisation factor

The characterisation factor for both pathways is thus 9.20E-06 – 5.59E-06 = 3.61E-06 person-years/ kg PM10.

Literature Reference:
1. ExternE, (1995) "Externalities of Energy" European Commission, DG-XII, Vol 2, "Methodology", Brussels-Luxembourg, 1995. 2. IPPC, “The 1994 Report of the Scientific Assessment Working Group of IPCC. Summary for policymakers”, WMO and UNEP, 1994
Methodological Range:
For reasons mentioned in "PM10 impact on YOLL" global system borders are chosen. The time period investigated is the year 1990

Existing Characterisation Factors of PM10 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 = *
PM10 3.61E-06 p yr/kg 2 pathways