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Hi everybody,

I have to model a simplified LCA of 1l of olive oil for my uni seminar "Environmental Impact Assessment". I want to include the CO2e fixation during the agricultural phase. My question is: Can I just use the natural flow "Carbon dioxide" (category: resource/in air) and put the value with a negative sign on the input side as CO2e is taken from the air and fixed in the trees and soil?

Thank you and kind regards,

P.S.: I am using ReCiPe 2016 Midpoint (H) for our calculations.
in openLCA by (150 points)

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by (62.2k points)
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Hi Nina,

welcome - you should use the resource CO2 in air as input

a negative emission technically works too but does not reflect the real situation.

Best wishes,


by (150 points)
Hi Andreas,

thank you very much. This is exactly what I used. :) So I just erase the minus sign and leave it as input? Did I understand you correctly?  


by (62.2k points)
indeed, put CO2 as input without minus, but in addition, use the CO2 resource flow, not a CO2 emission flow. Just as the image above shows, resource/in air/ Carbon dioxide.
by (150 points)
Thank you very much for your help! :)