robust methods to account for the benefits, if any, of sequestration and temporary storage and release of biogenic carbon. However, there is still no overall consensus on the most appropriate ways of considering and quantifying it.
Method: This paper reviews and discusses six available methods for accounting for the potential climate impacts of carbon sequestration and temporary storage or release of biogenic carbon in LCA and CF. Several viewpoints and approaches are presented in a structured manner to help decision-makers in their selection of an option from competing approaches for dealing with timing issues, including
delayed emissions of fossil carbon.
Results: Key issues identified are that the benefits of temporary carbon removals depend on the time horizon adopted when assessing climate change impacts and are therefore not purely science-based but include value judgments. We therefore did not recommend a preferred option out of the six alternatives presented here.
Conclusions: Further work is needed to combine aspects of scientific and socio-economic understanding with value judgements and ethical considerations.
- Climate change
- Carbon footprint
- Carbon cycle
- Carbon stocks
- Carbon sinks
- Global warming potential (GWP)
- Time preferences