Draft script: You’ve probably heard a lot about the AMOC, which is short for the Atlantic Meridional Overturning Current. Based on my awkward pronunciation of the Atlantic Meridional Overturning Current, you can understand why I prefer the acronym, AMOC. With this video, I will provide an overview of the AMOC, including how it threatens to rapidly cool a significant portion of Earth. I will then explain why I’m skeptical of this outcome.
Hi mate, I thought you’d be interested in this paper:
“Abstract The Arctic sea ice has been rapidly dwindling over the past four decades, significantly impacting the Arctic region and beyond. During the same period, the Atlantic meridional overturning circulation (AMOC) was also found in a declining trend. Here we investigate the role of the AMOC in the recent Arctic sea ice changes by comparing simulations from the Community Climate System Model version 4 with decelerated and stationary AMOCs under anthropogenic climate change. We find that the weakened AMOC can slow down the decline rates of Arctic sea ice area and volume by 36% and 22% between 1980 and 2020, respectively. The decelerated ocean circulation causes a reduction of northward Atlantic heat transport and hence a general interior ocean cooling in the Arctic Mediterranean, which helps alleviate the Arctic sea ice loss primarily through thermodynamic processes occurring at the base of the sea ice.”
I've cross posted Guy's latest work on my website with additional information on "Tipping Points", derived from his monster climate change summary and an additional video from our previous guest on Nature Bats Last, Oceanographer Jim Massa.
Many thanks for your continued dedication, Guy. It's an honour to be facing this the perfect storm together.
The Weakened Atlantic Meridional Overturning Circulation Diminishes Recent Arctic Sea Ice Loss:
Hi mate, I thought you’d be interested in this paper:
“Abstract The Arctic sea ice has been rapidly dwindling over the past four decades, significantly impacting the Arctic region and beyond. During the same period, the Atlantic meridional overturning circulation (AMOC) was also found in a declining trend. Here we investigate the role of the AMOC in the recent Arctic sea ice changes by comparing simulations from the Community Climate System Model version 4 with decelerated and stationary AMOCs under anthropogenic climate change. We find that the weakened AMOC can slow down the decline rates of Arctic sea ice area and volume by 36% and 22% between 1980 and 2020, respectively. The decelerated ocean circulation causes a reduction of northward Atlantic heat transport and hence a general interior ocean cooling in the Arctic Mediterranean, which helps alleviate the Arctic sea ice loss primarily through thermodynamic processes occurring at the base of the sea ice.”
https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2023GL105929#:~:text=To%20summarize%2C%20our%20results%20suggest,during%20the%20past%20four%20decades
This is quite relevant to my work, Kevin. Thank you for sharing.
I've cross posted Guy's latest work on my website with additional information on "Tipping Points", derived from his monster climate change summary and an additional video from our previous guest on Nature Bats Last, Oceanographer Jim Massa.
Many thanks for your continued dedication, Guy. It's an honour to be facing this the perfect storm together.
https://kevinhester.live/2024/03/19/amoc-or-not/
The honor is all mine, Kevin. Thank you for contributing additional information, and also for restacking my post.