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EcoSpold 2 · Calculation comparison

ecoinvent 3.9.1 cut-off, eutrophication: marine

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
Comparison measurements and reference
Databaseecoinvent 3.9.1 cut-off
Source formatEcoSpold 2
Impact method collectionEF v3.1
Impact categoryeutrophication: marine
Unitkg N-Eq
Activities compared17,180
Median ratio (VoLCA / published)1.0064
Comparison band1%
Activities outside the band6,849
Share outside the band39.87%
VerdictDisagrees: misses the agreement a release is held to
Points drawn2,086
Largest relative deviation+866.27%
Activity with largest deviationtrout, production in semi-intensive system, in lake
Published referenceecoinvent 3.9.1_cutoff_cumulative_lcia_xlsx.7z
ecoinvent 3.9.1 cut-off, eutrophication: marine
Each point is one activity: what ecoinvent 3.9.1 cut-off published for eutrophication: marine (kg N-Eq), against what VoLCA computes from the same EcoSpold 2 source under the publisher's own EF v3.1 factors. The black line is equality and the grey band is 1%. 17,180 activities were compared; 6,849 fall outside the band, more than a picture can hold, so 1,909 of the 17,180 are drawn, evenly spaced over the published value whichever side of the band they fall, and the 177 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 1.0064, 39.87% 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.