Difference between revisions of "En-en adult card 41 permafrost"

From Climate Fresk
Jump to navigation Jump to search
m (Minor corrections)
Line 6: Line 6:


== Explanation ==
== Explanation ==
Permafrost is a soil whose temperature remains below or equal to 0°C for at least two consecutive years<ref>[https://www.ipcc.ch/site/assets/uploads/2018/03/WG1AR5_SummaryVolume_FINAL_FRENCH.pdf#page=212 Glossary, Report 5, Working Group 1 (French)]</ref>.
Permafrost is a soil that is permanently frozen for at least two consecutive years<ref>[https://www.ipcc.ch/site/assets/uploads/2018/03/WG1AR5_SummaryVolume_FINAL_FRENCH.pdf#page=212 Glossary, Report 5, Working Group 1 (French)]</ref>.


Two cards were added after card 40: they are loops of potential violent [[wikipedia:Climate_change_feedback|feedback]], "climate bombs", which if triggered, make us lose control over the climate for good.
The two last cards to be added to the Collage after card 40 are potentially violent [[wikipedia:Climate_change_feedback|feedback]] loops or "climate bombs" which, if triggered, would cause us to lose control over the climate for good.


Thermokarst are veritable bioreactors at the heart of the process of releasing frozen carbon: when the permafrost thaws, pieces of soil detach and fall into the water, bringing nutrients and carbon to the bacteria and plankton present in the sea, which degrade them into CO<sub>2</sub> (in the water layers near the surface) and methane or CH<sub>4</sub> (in the oxygen-deprived bottom)<ref>[https://lejournal.cnrs.fr/articles/pergelisol-le-piege-climatique CNRS The newspaper Permafrost, the climate trap (French)]</ref>.
Thermokarst are veritable bioreactors at the heart of the process of releasing frozen carbon: when the permafrost thaws, pieces of soil detach and fall into the water, bringing nutrients and carbon to the bacteria and plankton present in the sea, which degrade them into CO<sub>2</sub> (in the water layers near the surface) and methane or CH<sub>4</sub> (in the oxygen-deprived bottom)<ref>[https://lejournal.cnrs.fr/articles/pergelisol-le-piege-climatique CNRS The newspaper Permafrost, the climate trap (French)]</ref>.


== Facilitation tips ==
== Facilitation advice ==
For online murals, you can show this [https://youtu.be/YegdEOSQotE?t=82 video] from the University of Alaska Fairbanks showing the flammable methane stored in the permafrost.
For online murals, you can show this [https://youtu.be/YegdEOSQotE?t=82 video] from the University of Alaska Fairbanks showing the flammable methane stored in the permafrost.



Revision as of 20:34, 23 March 2021

Card #41: Permafrost

Causes Consequences
Front of the card "Permafrost"


Permafrost is permanently frozen ground.
Permafrost thawing leads to the decomposition of organic matter previously frozen underground, a phenomenon that releases methane and CO2 into the atmosphere.
Beyond +2°C, it is almost certain this phenomenon will accelerate and make the climate spiral out of control.

Explanation

Permafrost is a soil that is permanently frozen for at least two consecutive years[1].

The two last cards to be added to the Collage after card 40 are potentially violent feedback loops or "climate bombs" which, if triggered, would cause us to lose control over the climate for good.

Thermokarst are veritable bioreactors at the heart of the process of releasing frozen carbon: when the permafrost thaws, pieces of soil detach and fall into the water, bringing nutrients and carbon to the bacteria and plankton present in the sea, which degrade them into CO2 (in the water layers near the surface) and methane or CH4 (in the oxygen-deprived bottom)[2].

Facilitation advice

For online murals, you can show this video from the University of Alaska Fairbanks showing the flammable methane stored in the permafrost.

Other possible links

Causes

Energy budget If we want to stay within the same logic of energy conservation, the thawing of the permafrost should be linked to the energy budget.

To go further

Climate Action Network France: Thawing permafrost carbon will increase global warming, 2018 (French)

RT France documentary: The mystery of permafrost (French)

References