# Where on Earth does the atmosphere have the most $O_2$ concentration?

Is there a map that shows the average oxygen concentration in the atmosphere? Seems to me that it would be where the most plants are but I wonder if population and industry make a difference in oxygen levels in a given area?

• You may find higger O2 levels at the upper layer of rich oceans -biologicaly talking-. There is Henry's Law, an echillibrium between gass presures/concentrations of the ocean and the atmosphere, so probably at the contact between an ocean bacterial rich system and the atmosphere, but maybe on boreal forests at ligth. Maybe someone can share a map with oxygen levels on the contact of the oceans on a worlds map. – user12525 Aug 8 '18 at 20:28
• @Universal_learner why not answer? – Muze Aug 8 '18 at 20:28
• I have no data about O2 levels at both sugestions, atmosphere/ocean contact at a rich ocean system & a very rich boreal forest on hot season. Just a caution for a possibly answer from a botanic. There may be maps about O2 levels at ocean surface but that at nasa and so and I am a student with no access to Science papers Muze and don't know how to get them. For boreal system they can give you absolute maximum O2 levels registered, and then comparisson. – user12525 Aug 8 '18 at 20:38
• Most sources and sinks of O2 at short timescales are associated respectively with sinks and sources of CO2. Therefore, you can take a map of CO2 concentrations (of which there are many) and the areas with minimum CO2 are most likely the ones with maximum O2 – Camilo Rada Aug 11 '18 at 0:57
• @CamiloRada nice to see you again – Muze Aug 11 '18 at 2:54