En-en adult card 11 concentration of co2: Difference between revisions
Jump to navigation
Jump to search
m (First draft of entire page) |
m (Minor corrections) |
||
Line 6: | Line 6: | ||
== Explanation == | == Explanation == | ||
CO<sub>2</sub> measurements have been taken since 1958 in Hawaii, on Big Island, on the flanks of the Mauna Loa volcano. They were initiated by Charles Keeling. In the blue scenario (2°C) they increase until 2040-2050, then they decrease because emissions will have been reduced so much that natural sinks no longer absorb them. | |||
== To go further == | == To go further == | ||
=== | === CO<sub>2</sub> elimination === | ||
The surplus | 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 CO<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>: | ||
* in 100 years' time, 40% of the surplus | * in 100 years' time, 40% of the surplus CO<sub>2</sub> released today will still remain in the atmosphere | ||
* in 1000 years' time, 20% of the surplus | * in 1000 years' time, 20% of the surplus CO<sub>2</sub> emitted today will still remain in the atmosphere | ||
* in 10,000 years' time, 10% of the surplus | * in 10,000 years' time, 10% of the surplus CO<sub>2</sub> emitted today will still remain in the atmosphere. | ||
It is an almost irreversible process. | It is an almost irreversible process. | ||
=== French emission factors === | === French emission factors === | ||
In France, the main cause of | In France, the main cause of CO<sub>2</sub> emissions has shifted from industry to transportation in 150 years. | ||
== References == | == References == | ||
<references /> | <references /> | ||
[[fr:Fr-fr_adulte_carte_11_concentration_en_co2]] |