Carbon sequestration Carbon sequestration is the removal from CO2 from the atmosphere or in its dissolved form in the Ocean and store it in a fixed or liquid form outside reach of both the atmosphere and the ocean. CO2 in the atmosphere is currently at a level of 400 parts per million (ppm) parts of molecules in a piece of atmosphere. Before the industrial revolution, around the year 1820, the amount of CO2 in the atmosphere was 280 ppm. We therefore provoked an excess of 130 ppm in the atmosphere. This 130 ppm excess is equal to 277 Gigatons of CO2. Our Fossil fuel based society put even more CO2 into the atmosphere, since part of the excess CO2 is absorbed by the Ocean, Soils and the vegetation during these past 200 years. Every year our Fossil fuel based economy adds another 5 Gigaton to the atmosphere. Again a part of this is absorbed by the Oceans, Soils and Vegetation. Having these numbers of 5 Gigaton and 277 Gigaton allows us to compute how much CO2 we need to sequester