co2 emissions of foods and diets
DESCRIPTION
CO2 Emissions of various foods and diets. Based on this report: http://geosci.uchicago.edu/~gidon/papers/nutri/nutriEI.pdfTRANSCRIPT
CO2 Emissions by Diet
avg american vegan lacto-ovo mad meat eater
chicken 0.12 5.2% 0.12milk 0.44 11.4% 0.92 23.6% 0.19eggs 0.06 1.4% 0.17 4.2%beef (grain fed) 0.61 3.2% 3.81pork 0.70 5.6% 2.49lamb 0.06 0.2%fish (avg value) 0.06 0.8%animal total 2.05 27.7% 0.00 0.0% 1.08 27.7% 6.60
veg (avg value) 0.14 72.3% 0.19 100% 0.14 72.3% 0.10
total 2.19 100% 0.19 100% 1.22 100% 6.70
Assumptions 3,774 Kcal a day 1,377,510 Kcal a year
CO2 Emissions by Food Type
chicken 15.9 34.5% 5.52 1.53 0.14 1.67 0.0000017milk 18.9 25.6% 4.85 1.35 1.47 2.82 0.0000028eggs 27.8 32.3% 8.93 2.48 0.45 2.93 0.0000029beef (grain fed) 34.5 43.5% 15.63 4.34 9.48 13.82 0.0000138pork 66.7 40.0% 27.03 7.51 1.52 9.03 0.0000090lamb 200.0 43.5% 83.33 23.15 2.82 25.97 0.0000260
fish (avg value) 21.74 6.04 6.04 0.0000060herring 2.0 45.5% 0.91 0.25 0.25 0.0000003tuna 20.0 83.3% 17.24 4.79 4.79 0.0000048salmon (farmed) 40.0 43.5% 17.54 4.87 4.87 0.0000049shrimp 142.9 76.9% 111.11 30.86 30.86 0.0000309
veg (avg value) 0.50 0.14 0.14 0.0000001corn 0.40 0.11 0.11 0.0000001soy 0.24 0.07 0.07 0.0000001apple 0.91 0.25 0.25 0.0000003potatoes 0.81 0.23 0.23 0.0000002
FF = Fossil Fuels gr CO2 = grams CO2 equivalence
tonnes CO2/yr
% of calories
tonnes CO2/yr
% of calories
tonnes CO2/yr
% of calories
tonnes CO2/yr
Kcal FF/Kcal protein
Kcal protein/Kcal food(% protein)
Kcal FF/Kcal food
gr CO2 (FF)/Kcal food
gr CO2 (methane) /Kcal food
gr CO2 (total)/Kcal food
tonnes CO2/Kcal food
Assumptions + Conversions3.96825396825 btu/kcal 1000000 gr/ton
0.00000007 ton co2/btu ff 0.277777778 gr co2/kcal ff2.7777778E-07 ton co2/kcal ff
Table 2 from Report (underlying values from Pimentel)
chicken 6.3 2.9 18.1milk 5.3 3.9 20.6eggs 3.6 3.1 11.2beef (grain fed) 2.9 2.3 6.4pork 1.5 2.5 3.7lamb 0.5 2.3 1.2fish (avg) 4.6 (table 3)herring 50 2.2 110tuna 5 1.2 5.8salmon (farmed) 2.5 2.3 5.7shrimp 0.7 1.3 0.9veg (avg) 200 (figure 3)corn 250soy 415apple 110potatoes 123
http://www.epa.gov/climatechange/emissions/downloads/emissionsfactorsbrochure2004.pdf
natural gas 116.39 0.0528 0.0004536 lbs to tonnesfuel oil 159.66 0.0724motor gasoline 154.91 0.0703diesel 160.3 0.0727bituminous coal 203.99 0.0925
http://www.epa.gov/climatechange/emissions/ind_assumptions.htmlNational average emissions factor for electricity is 1.37 pounds CO2 per kilowatt-hour
100 x Kcal protein/Kcal input
Kcal protein/Kcal total
100 x Kcal output/Kcal input
lbs co2/mmBtu
tons co2/mmBtu
mad meat eater avg american on diet chicken lover
5.0% 0.080 5.2% 0.64 0.285.0% 0.291 11.4%
0.037 1.4%20.0% 0.402 3.2%20.0% 0.462 5.6%
0.038 0.2%0.042 0.8%
50.0% 1.35 27.7% 0.64 27.7%
50.0% 0.091 72.3% 0.14 72.3%
100% 1.44 100% 0.78 100%
0.167 0.3680.282 0.6200.293 0.6451.382 3.0400.903 1.9862.597 5.713
0.604 1.3290.025 0.0560.479 1.0540.487 1.0723.086 6.790
0.014 0.0310.011 0.0240.007 0.0150.025 0.0560.023 0.050
% of calories
tonnes CO2/yr
% of calories
tonnes CO2/yr
% of calories
kg CO2 (total)/100 Kcal food
lbs CO2 (total)/100 Kcal food