Hi Tom, do you think that because we have removed some of our ability to soak up our emissions and in part created a higher albedo world through land clearing this may mean that the higher co2 values we have today correlate to lower co2 conditions of the past? I would assume that a greater percentage of the overall equalization would take longer to be felt like Greenland melting and associated albedo changes so although we may be feeling some of the effects the feedback lag will be longer . Many thanks for the article.
I think it means the feedbacks will kick in faster than they would if the emissions were caused by volcanic activity. As we’ve suggested before, other human activities cause sensitivity multipliers, but the end effect will equalise out to be the same over millennia. I think our other activities will speed up Greenland melting for example since the vegetation feedbacks that took until +4ºC during the PETM will now take place at +3ºC or lower. The Amazon is a good example - tipping at +4ºC but as low as +2ºC with 20% degradation and deforestation.
I was thinking of our main ice blocks and sea level rise, You are right about the feed back and probably ocean warming it is only ice out of water that would show a lag. but again the whole process is sped up so not much of one.
All one needs to do is research "the Great Dying." The worst of the 5 previous mass extinctions. It was CO2 caused.
Hi Tom, do you think that because we have removed some of our ability to soak up our emissions and in part created a higher albedo world through land clearing this may mean that the higher co2 values we have today correlate to lower co2 conditions of the past? I would assume that a greater percentage of the overall equalization would take longer to be felt like Greenland melting and associated albedo changes so although we may be feeling some of the effects the feedback lag will be longer . Many thanks for the article.
I think it means the feedbacks will kick in faster than they would if the emissions were caused by volcanic activity. As we’ve suggested before, other human activities cause sensitivity multipliers, but the end effect will equalise out to be the same over millennia. I think our other activities will speed up Greenland melting for example since the vegetation feedbacks that took until +4ºC during the PETM will now take place at +3ºC or lower. The Amazon is a good example - tipping at +4ºC but as low as +2ºC with 20% degradation and deforestation.
Thanks.
I was thinking of our main ice blocks and sea level rise, You are right about the feed back and probably ocean warming it is only ice out of water that would show a lag. but again the whole process is sped up so not much of one.
A great article and well-evidenced, thanks for sharing. Peter Brannen's fantastic 'The Story of CO2 Is the Story of Everything' does an excellent job of breaking some of this stuff down over a longer read - https://open.spotify.com/show/3NqDhlqfVFjECAr8JHV6xz?si=tHnu7Nn8Q7uNZPn--wlItA
Thanks, I’ll check it out. His interview with @Nate Hagens on The Great Simplification is on my watch list for this afternoon.
Amazing!
As a young man I dismissed anything prefixed with 'paleo' as boring.
How wrong I was!
Thanks, I’m pleased you found it interesting.