Is the negative gmean for the tyre wear emissions flow in ecoinvent v3.6 lorry freight transport datasets correct?

Question

This also applies to the brake and road wear emission flows.

This seems to be a relic of the modeling of waste flows as negative inputs in previous versions of ecoinvent. These negative value generate negative results during Monte-Carlo simulations.

Comments

I am referring to the ecoinvent v3.6 cut-off database.
In fact, this seems to be the case for the waste flows of all the datasets I have checked.

Answer 1

The issue with the negative uncertainty values for the waste flows has now been resolved. The updated databases are available for download from https://nexus.openlca.org/database/ecoinvent

Answer 2

Yes, you are right, and this is indeed incorrect, and happened when we created the waste flows instead of products. We will fix this with a new version.

Thank you for spotting it!