How much atmosphere (%) is burned out at the rate of 80 million barrels (current world use) of oil each day?

Question

How much atmosphere (%) is burned out at the rate of 80 million barrels (current world use) of oil each day?

Answer 1

Well, you have to consider also to consider coal...  oil alone is surprisingly not a lot.

On the top of that you have to consider the deforestation where the carbon previously in the trees is changed to CO2 by combustion or decays to methane which itself decays to CO2.

Currently, the human activity increases the quantity of CO2 in the atmosphere by around 30 Gt CO2/year.

This correspond to the addition of 8.2 Gt carbon combining with 21.8 Gt O2

The mass of the atmosphere is:

5.1352 ×10^15 t or 5.1352 x 10^6 Gt out of which 21% O2 in mass so:

The atmosphere contains 1078000 Gt O2

So the share of O2 burned per year is: 1078000/21.8 or 0.00202%

Rate of combustion by anthropogenic carbon of our atmospheric oxygen = 0.055 PPM (part per million) per day

Answer 2

None.  oil burns removing o2 and creates co2, plants use co2 to create o2.

It's a great cycle no matter how many million barrels of oil we burn.

Answer 3

Most of the populated area has started keeping the record so in few years we will know for sure.

The last time I saw any thing on this subject, noted that it takes 10 mature trees to replenish the oxygen  that a one mature human being uses.