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Beef produces 85 kg CO2e per kg of food. Tofu produces 2.9 kg CO2e per kg of food.
(ourworldindata.org)
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this post was submitted on 16 Apr 2024
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The original paper says that they weighted each measure to the country's national production and then weighted those by the country's share of global production. They didn't just average each result they got for beef with no regard for location.
I think their point is that scaling to the volume of beef production of other countries isn't correct because the methods of production vary widely enough to produce much different results. As in, some countries likely produce more or less CO2/kg of beef so it makes no sense to simply scale the number they got from a single county to global scales.
Not the guy you're replying too though, so I'm not certain.
Right, but they didn't do that. It's a meta-analysis, so they took the value that each study got for a given crop in a specific country and then weighted all of the values by the share of global production that that country is responsible for. So if we pretend that the only three countries are Estonia, Latvia, and Lithuania, they did the following:
The dataset was 1530 studies across 39,000 farms in 119 countries
Yes I was wildly oversimplifying the methodology using a hypothetical intended to help people who might not have a background in either research or beef production understand.