youre not reading what Im writing
I posted 3 article sources for the 4% number
see next post
Again, you're talking about
annual emissions, not actual percentage of man-made CO2 in the atmosphere.
Your first link is a letter to the editor, by a person of unknown background and credibility. He claims it's 3.2% of CO2 in the atmosphere, citing some DOE 2000 report I can't find via google. However, given the closeness of the number to the estimates of man-made
annual emissions, I see no reason to believe that it's not an error that he has made that is identical to the one you have made.
Your second link is to Quora, which is a question-and-answer site not terribly unlike a message board. The first answer by Windell Driskell (retired USAF and not climate scientist) repeats that about 97% is produced by nature. The use of the word "produced" would be consistent with an understanding of
annual emissions. He does not claim it's 97% of the atmospheric CO2 level. A second answer by George Dowson (byline says he's a researcher in CCUS, aka carbon capture, utilization, and storage) reiterates the claim I've made that it's about 5% of
annual emissons but a major driver of atmospheric CO2 rise. A third response by Cristian Bellafonte (entrepreneur) reiterates the idea that 3.2% is produced or by-produced by man, which again points to
annual emissions. He never claims that it is 3.2% or 4% of the current atmosphere. A fourth response by Edward Measure (retired physicist) doesn't use any percentage claim, but says burning fossil fuels, and manufacture of cement and steel is a smaller contribution than natural sources. However he claims that because this additional CO2 is unbalanced, it drives the increase in atmospheric CO2. Beyond that there are some older answers, which range from "less than 10%" to around 33% of atmospheric CO2 is man made. Either way, I'd suggest that Quora is a poor source for, well, anything.
Your third link is again a question and answer site. However, the only posted answer to the question clearly explains that the idea of 3% of emissions (referring to
annual emissions) being man-made, it leads to a much higher total atmospheric concentration because the carbon cycle cannot sink the extra emissions.
So your links don't actually prove anything. They're not from reputable sources, and two of the three don't even claim what you say they're claiming.
Have you read any of the links I've provided? If not, I highly recommend these:
https://www.realclimate.org/index.php/archives/2018/01/the-global-co2-rise-the-facts-exxon-and-the-favorite-denial-tricks/https://history.aip.org/climate/co2.htm
