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En-en adult card 11 concentration of co2: Difference between revisions
En-en adult card 11 concentration of co2 (view source)
Revision as of 22:56, 27 October 2022
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== Card #11: Concentration of CO<sub>2</sub> == | |||
| | <center> | ||
[[File:En-en_adult_card_11_front.png|400px]] | |||
About half of CO<sub>2</sub> emissions are captured by natural carbon sinks. The other half remains in the atmosphere. The concentration of CO<sub>2</sub> | |||
in the air has increased from 280 to 415 ppm (parts per million) over the past 150 years. This is higher than at any point over the last three million years. | |||
</center> | |||
== Explanation== | == Explanation== | ||
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===CO<sub>2</sub> elimination=== | ===CO<sub>2</sub> elimination=== | ||
The surplus CO<sub>2</sub> is permanently stored in the atmosphere (no chemical degradation process). There are only 2 physical processes: dissolution of CO<sub>2</sub> in the oceans, and synthesis of | The surplus CO<sub>2</sub> is permanently stored in the atmosphere (no chemical degradation process). There are only 2 physical processes: dissolution of CO<sub>2</sub> in the oceans, and synthesis of O<sub>2</sub> via photosynthesis (in the presence of photons). | ||
Therefore<ref>[https://www.ipcc.ch/site/assets/uploads/2018/02/WG1AR5_all_final.pdf#page=489 IPCC Climate Change 2013 Report]</ref>: | Therefore<ref>[https://www.ipcc.ch/site/assets/uploads/2018/02/WG1AR5_all_final.pdf#page=489 IPCC Climate Change 2013 Report]</ref>: | ||