EcoSpold 2 · Calculation comparison

ecoinvent 3.9.1 cut-off, climate change: fossil / global warming potential (GWP100)

A comparison of published impact results with VoLCA calculations from the same source data and the publisher’s impact factors. Points on the diagonal agree.

This page shows engine v0.13.0, which is not the newest measured. Compare the engine versions, or see the current comparisons.

Engine version: volca 0.13.0 (8c0396c, v0.13.0, linux)
Measured on: 2026-09-18

Comparison measurements and reference
Database	ecoinvent 3.9.1 cut-off
Source format	EcoSpold 2
Impact method collection	IPCC 2021
Impact category	climate change: fossil / global warming potential (GWP100)
Unit	kg CO2-Eq
Activities compared	17,184
Median ratio (VoLCA / published)	1.0354
Comparison band	1%
Activities outside the band	13,157
Share outside the band	76.57%
Verdict	Disagrees: misses the agreement a release is held to
Points drawn	2,089
Largest relative deviation	+2,192,492.28%
Activity with largest deviation	market for land tenure, arable land, measured as carbon net primary productivity, annual crop
Published reference	ecoinvent 3.9.1_cutoff_cumulative_lcia_xlsx.7z

Each point is one activity: what ecoinvent 3.9.1 cut-off published for climate change: fossil / global warming potential (GWP100) (kg CO2-Eq), against what VoLCA computes from the same EcoSpold 2 source under the publisher's own IPCC 2021 factors. The black line is equality and the grey band is 1%. 17,184 activities were compared; 13,157 fall outside the band, more than a picture can hold, so 1,910 of the 17,184 are drawn, evenly spaced over the published value whichever side of the band they fall, and the 179 of the 200 farthest from equality that this walk missed are added. Where several fall on one spot, at most three markers are drawn there, since a fourth would not darken it. Median ratio 1.0354, 76.57% outside the band. This misses the agreement a release is held to: at most 5% of activities outside the band and a median ratio inside it.