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Methane tipping points are already met, especially from tropical wetlands and the polar regions. Add to that the conversion of past carbon sinks to carbon emitt

Methane tipping points are already met, especially from tropical wetlands and the polar regions. Add to that the conversion of past carbon sinks to carbon emitters, such as the boreal forests and the Amazon and we are looking at a continued rise of both emissions and temps for a long time.

badtension 3y ago
I know about the "flipped s-curve" that is methane emissions (inflection point in 2007) is it really considered a tipping point though? Do you have some good papers on that?
- jules-jules 3y ago
  Here's a paper from July https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2023GB007875 https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2023GB00... Key Points >The rapid growth in the atmospheric methane burden that began in late 2006 is very different from methane's past observational record >Recent studies point to strongly increased emissions from wetlands, especially in the tropics >This increase is comparable in scale and speed to glacial/interglacial terminations when the global climate system suddenly reorganized Overall, there is a growing research output although much is still unknown. See for example: https://www.nature.com/articles/d41586-023-00616-x https://www.nature.com/articles/d41586-023-00616-x https://www.nature.com/articles/s41558-023-01629-0#Sec1 https://www.nature.com/articles/s41558-023-01629-0#Sec1 https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018GB006009 https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/201... > Rising methane could be a sign that Earth’s climate is part-way through a ‘termination-level transition’ https://theconversation.com/rising-methane-could-be-a-sign-that-earths-climate-is-part-way-through-a-termination-level-transition-211211 https://theconversation.com/rising-methane-could-be-a-sign-t... >‘Exceptional’ surge in methane emissions from wetlands worries scientists https://www.carbonbrief.org/exceptional-surge-in-methane-emissions-from-wetlands-worries-scientists/ https://www.carbonbrief.org/exceptional-surge-in-methane-emi... Dr Peter Carter has a good run down of the rapid rise in methane emissions: https://www.youtube.com/watch?v=2oQNrO0fqOA https://www.youtube.com/watch?v=2oQNrO0fqOA
  - badtension 3y ago
    Thank you so much, I think I might have seen the first paper, will plow through the rest later, it will take me some time!

badtension 3y ago

I know about the "flipped s-curve" that is methane emissions (inflection point in 2007) is it really considered a tipping point though? Do you have some good papers on that?

jules-jules 3y ago
Here's a paper from July https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2023GB007875 https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2023GB00... Key Points >The rapid growth in the atmospheric methane burden that began in late 2006 is very different from methane's past observational record >Recent studies point to strongly increased emissions from wetlands, especially in the tropics >This increase is comparable in scale and speed to glacial/interglacial terminations when the global climate system suddenly reorganized Overall, there is a growing research output although much is still unknown. See for example: https://www.nature.com/articles/d41586-023-00616-x https://www.nature.com/articles/d41586-023-00616-x https://www.nature.com/articles/s41558-023-01629-0#Sec1 https://www.nature.com/articles/s41558-023-01629-0#Sec1 https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018GB006009 https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/201... > Rising methane could be a sign that Earth’s climate is part-way through a ‘termination-level transition’ https://theconversation.com/rising-methane-could-be-a-sign-that-earths-climate-is-part-way-through-a-termination-level-transition-211211 https://theconversation.com/rising-methane-could-be-a-sign-t... >‘Exceptional’ surge in methane emissions from wetlands worries scientists https://www.carbonbrief.org/exceptional-surge-in-methane-emissions-from-wetlands-worries-scientists/ https://www.carbonbrief.org/exceptional-surge-in-methane-emi... Dr Peter Carter has a good run down of the rapid rise in methane emissions: https://www.youtube.com/watch?v=2oQNrO0fqOA https://www.youtube.com/watch?v=2oQNrO0fqOA
- badtension 3y ago
  Thank you so much, I think I might have seen the first paper, will plow through the rest later, it will take me some time!