What is the concentration of CO2 in the atmosphere over the oceans compared to over land?



  1. 0 Votes

    Based on a map from July 2003, the concentration varied between 365 and 382 ppm. As far as I can see, there is no pattern of land getting different concentrations the ocean. The spots with the highest levels are in Atlantic off US East Coast, over Western and Central US, over Mediterranean and Middle East and Central Asia. All of those, together with pretty high concentration in the Pacific at those latitudes, form a band. There is an almost symmetrical band in the Southern Hemisphere, although with lower levels (with a high spot in Argentina). A map from 2009, from a similar survey by NASA, reveals only minor changes in the distribution of carbon dioxide (a much more prominent high spot in North Pacific, and a new spot over South Africa), and the levels are now at 382-390 ppm.

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