Abstract
It is widely recognized that LCA is in most cases relative and contains uncertainties due to choices and data. This paper analyses the combination of the two comparative uncertainties. Basic concepts: We carefully define the idea of relativity and uncertainty within LCA. We finish off by giving an example of case where inappropriate handling of comparative uncertainties will lead to a misleading result for a decision-maker. Correlations: We develop a generic framework for probabilistic comparative LCA and analyse at which places correlations may be present. We also discuss the most convenient approaches for handling such correlated uncertainties. Conclusion: We put the elements discussed in a structure that provides a research agenda for dealing with comparative uncertainties in LCA.
Original language | English |
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Pages (from-to) | 1573-1579 |
Number of pages | 7 |
Journal | International Journal of Life Cycle Assessment |
Volume | 24 |
Issue number | 9 |
DOIs |
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Publication status | Published - 1 Sept 2019 |
Funding
The main ideas have been presented at the SETAC Europe conference in Rome, Italy, and at the LCA Food conference in Bangkok. This paper was initially selected for the special issue on Sustainable Food Production and Consumption, but the editor and reviewers observed that it was more appropriately placed as a general commentary and discussion article.
Funders | Funder number |
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LCA |
Keywords
- Comparative analysis
- Correlations
- Life cycle assessment
- Uncertainty