410 ppm = 3200 gigatons of CO2 = 870 gigatons of carbon

408/410*870 = your number

Also, you can take out of that from LCA models.

https://en.wikipedia.org/wiki/Carbon_dioxide_in_Earth%27s_atmosphere

I am using this : 1ppm of CO2 in the atmospheric air is caused by 0.78 Gt of carbon dioxide

Thank you both Robert and Zin Eddine!

But how these two numbers given by you two are consistent with each other?

0.78 x 410 = 319.8 GtC ! Either 0.78 should be corrected to 7.8 or 3200 should be mistaken and 320 is correct. The link above (Wikipedia) says that 410 ppm equals 3200 Gt of CO2.

thank you all for your answers. I have this number in ppm 50827680ppm of CO2 emitted from industrial gas turbine operated using natural gas. I would like to convert it to [g/kg fuel].

Zin Eddine Dadach Hamed Shakouri G. Robert Istvan Radics

1 ppm = 2.124 GtC (refer to Global Carbon Budget 2018, Le Quere et al., Earth Syst. Sci. Data, 10, 2141–2194, 2018 )

So at 2017, the atmosphere holds around 860 GtC (860/2.124=404.8 ppm) of CO2, and the rate of increase is 4.47 GtC/yr (4.7/2.124 = 2.21 ppm/yr)

Zheng Rong Chong thanks for your answer .I am not a specialist in Environment or emission I am doing an economic evaluation to a power plant. so I have given this number (50827680ppm of CO2) . but I need it to be changed to [g/Kg fuel]