Uploaded January 2026 | Updated September 2026, 2 weeks ago
Seawater Aging in the North Atlantic Ocean Confirms Ongoing AMOC Slowing and Deep Ocean De-Oxygenization
Seawater age is defined as the duration of time since a volume of seawater last reached the surface of the ocean.
A new research paper shows clearly that seawater is aging in the North Atlantic Ocean, which means that the AMOC (Atlantic Meridional Overturning Circulation) which ventilates the ocean is weakening.
This weakening has profound negative effects on our global climate system and on humanity. Profound...
References
BlueSky posting on new paper: https://bsky.app/profile/drtomharris.bsky.social/post/3mcz5byigyc2o
Nature Communications peer-reviewed paper:
North Atlantic ventilation change over the past three decades is potentially driven by climate change
Link to open-source, free paper: nature.com/articles/s41467-025-67923-x
Abstract
The North Atlantic Meridional Overturning Circulation (AMOC) ventilates a large part of the world ocean via the formation of mode waters and North Atlantic Deep Water. The extent to which human activities have impacted this ventilation system remains unclear. To assess the temporal variations of ocean ventilation in the North Atlantic, we calculated the “age" of seawater, that is, the duration since its last contact with the ocean surface, from both observed and simulated chlorofluorocarbon-12 and sulfur hexafluoride concentrations. Our results indicate that, despite fluctuations in ventilation strength in the Labrador Sea over the past decades, the North Atlantic waters are generally aging. By integrating observations with model simulations, we propose that this aging trend is indicative of a climate change signal rather than natural variability.
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Wikipedia entry on Canfield Ocean: en.wikipedia.org/wiki/Canfield_ocean
Wikipedia entry on Anoxic Event: en.wikipedia.org/wiki/Anoxic_event
From my friend Heidi:
Hello! I wanted to share something important with you. Paul Beckwith is doing incredible work to educate people about climate change and extreme weather, but he needs our support to continue this vital mission. Every donation, no matter the size, can make a difference in helping him reach more communities. Please consider clicking the link below to donate or share it with others who care about our planet. Thank you!
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Please donate to PaulBeckwith.net to support my research and videos connecting the dots on abrupt climate system mayhem.
Please subscribe to my YouTube channel. As well as my website, and YouTube, you can find me on Patreon, Facebook, Twitter/X, LinkedIn, Instagram, Reddit (multiple climate channels within), Quora, TikTok, Discord, Mastodon, Twitch, Vimeo, Bluesky, TruthSocial, Threads, Substack, Tumblr, Pinterest, etc...
Seawater Aging in the North Atlantic Ocean Confirms Ongoing AMOC Slowing and Deep Ocean De-Oxygenization
Seawater age is defined as the duration of time since a volume of seawater last reached the surface of the ocean.
A new research paper shows clearly that seawater is aging in the North Atlantic Ocean, which means that the AMOC (Atlantic Meridional Overturning Circulation) which ventilates the ocean is weakening.
This weakening has profound negative effects on our global climate system and on humanity. Profound...
References
BlueSky posting on new paper: https://bsky.app/profile/drtomharris.bsky.social/post/3mcz5byigyc2o
Nature Communications peer-reviewed paper:
North Atlantic ventilation change over the past three decades is potentially driven by climate change
Link to open-source, free paper: nature.com/articles/s41467-025-67923-x
Abstract
The North Atlantic Meridional Overturning Circulation (AMOC) ventilates a large part of the world ocean via the formation of mode waters and North Atlantic Deep Water. The extent to which human activities have impacted this ventilation system remains unclear. To assess the temporal variations of ocean ventilation in the North Atlantic, we calculated the “age" of seawater, that is, the duration since its last contact with the ocean surface, from both observed and simulated chlorofluorocarbon-12 and sulfur hexafluoride concentrations. Our results indicate that, despite fluctuations in ventilation strength in the Labrador Sea over the past decades, the North Atlantic waters are generally aging. By integrating observations with model simulations, we propose that this aging trend is indicative of a climate change signal rather than natural variability.
British Football (North American called soccer) results: Arsenal 2 - Manchester United 3
Series standings: soccerassociation.com/0/index.htm
My teams are West Ham United and Chippenham Town
Wikipedia entry on Canfield Ocean: en.wikipedia.org/wiki/Canfield_ocean
Wikipedia entry on Anoxic Event: en.wikipedia.org/wiki/Anoxic_event
From my friend Heidi:
Hello! I wanted to share something important with you. Paul Beckwith is doing incredible work to educate people about climate change and extreme weather, but he needs our support to continue this vital mission. Every donation, no matter the size, can make a difference in helping him reach more communities. Please consider clicking the link below to donate or share it with others who care about our planet. Thank you!
Year end - Year start GoFundMe: https://www.gofundme.com/f/help-paul-...
Please donate to PaulBeckwith.net to support my research and videos connecting the dots on abrupt climate system mayhem.
Please subscribe to my YouTube channel. As well as my website, and YouTube, you can find me on Patreon, Facebook, Twitter/X, LinkedIn, Instagram, Reddit (multiple climate channels within), Quora, TikTok, Discord, Mastodon, Twitch, Vimeo, Bluesky, TruthSocial, Threads, Substack, Tumblr, Pinterest, etc...
