Inconsistencies in dealing with carbon flows in TRACI
Posted: 30 Mar 2016 16:30
Hi,
In the openLCA LCIA method package 1.5.4, there is an assumption that life cycle models can account for all carbon sinks and sources. There is therefore a characterization factor of -1 CO2e/kg for "Carbon dioxide, in air/resources/in air" and +1 for biogenic Carbon dioxide emissions.
HOWEVER: TRACI gives a factor of +1 for "Carbon dioxide, biogenic/air/x" and "Carbon dioxide, from soil or biomass stock/air/x", but does not have a corresponding "-1" "Carbon dioxide, in air/resources/in air".
In passing, there are these weird "Carbon dioxide, in air/air/all subcomp" flows that have CFs of +1. Do these really represent emissions? The "in air" suffix really seems to indicate that we are taking about a resource that has been categorized in the "air" compartment.
Regards,
Hugues
In the openLCA LCIA method package 1.5.4, there is an assumption that life cycle models can account for all carbon sinks and sources. There is therefore a characterization factor of -1 CO2e/kg for "Carbon dioxide, in air/resources/in air" and +1 for biogenic Carbon dioxide emissions.
HOWEVER: TRACI gives a factor of +1 for "Carbon dioxide, biogenic/air/x" and "Carbon dioxide, from soil or biomass stock/air/x", but does not have a corresponding "-1" "Carbon dioxide, in air/resources/in air".
In passing, there are these weird "Carbon dioxide, in air/air/all subcomp" flows that have CFs of +1. Do these really represent emissions? The "in air" suffix really seems to indicate that we are taking about a resource that has been categorized in the "air" compartment.
Regards,
Hugues