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6 Answers
- Anonymous1 decade agoFavorite Answer
Just to add to what's already been said- about 0.038%, give or take. See also reference 1, a graphical depiction of measurements taken at Mauna Loa. The regular variation is due to seasons, i.e.: reduced CO2 from spring/summer growth of plants, and an increase in the winter.
- 1 decade ago
0,035 % of the volume of the atmosphere is CO2. And it increases every year with 4% due to burning of fossil fuels.
Edit: The information was 10 years old so today it is 0,035 * 1,04^10 % (I don't have a calculator right now so you have to work it out by yourself)
- Anonymous1 decade ago
The average concentration as measured at Mauna Loa in 2000 was 369 parts per million by volume, or 560 parts per million by weight.
Source(s): Handbook of Chemistry and Physics, 2005 - How do you think about the answers? You can sign in to vote the answer.
- 1 decade ago
It is exactly 0.04%...I just measured it.
It actually varies depending on where you are, since we add to it based on population and industry.
