‘We don’t know where the tipping point is’: climate expert on potential collapse of Atlantic circulation

Oceanographer Stefan Rahmstorf explains why Amoc breakdown could be catastrophic for both humans and marine life

The Guardian

Via #CTV

Vital system of #AtlanticOcean currents that influences #weather across world could collapse as soon as the late 2030s, scientists have suggested in new study, a planetary-scale disaster that would transform weather & climate

Several studies in recent yrs have suggested crucial system, the #AtlanticMeridionalOverturningCirculation, #AMOC, could b on course 4 collapse, weakened by warmer ocean temps & disrupted saltiness caused by human-induced #ClimateChange

https://www.ctvnews.ca/climate-and-environment/a-critical-system-of-atlantic-ocean-currents-could-collapse-as-early-as-the-2030s-new-research-suggests-1.6988430

A critical system of Atlantic Ocean currents could collapse as early as the 2030s, new research suggests

A vital system of Atlantic Ocean currents that influences weather across the world could collapse as soon as the late 2030s, scientists have suggested in a new study — a planetary-scale disaster that would transform weather and climate.

CTVNews

7/

Presentation (~34 min) by @rahmstorf on #ClimateChange and the changing #AtlanticMeridionalOverturningCirculation (#AMOC) [3]

(archived version:
https://web.archive.org/web/20240609131436oe_/https://rr2---sn-o097znze.googlevideo.com/videoplayback?expire=1717960420&ei=hKplZpOlLpjpsfIPzb6C-A4&ip=185.211.32.223&id=o-AEgBQJiDB9vxpw_xzVsT3vtAyfOz8ehnm9zSMAHkJkW4&itag=22&source=youtube&requiressl=yes&xpc=EgVo2aDSNQ%3D%3D&bui=AbKP-1Pvuwmy7q_nLtFbJQyvJrT5UZy17XA4Zns6XGMiQZnqUn3T4K_ZWjLfb_D_Zb5MHcjxWQwyYGQE&spc=UWF9f5oipEP70CZRBB_JwR0s5-Xn3knCim0pPaBWG3GhOqFkGMxq7g3veyLb&vprv=1&svpuc=1&mime=video%2Fmp4&ns=yi-fnGdTO4mfZI-IbExbRQ8Q&rqh=1&cnr=14&ratebypass=yes&dur=2094.509&lmt=1717763238771231&c=WEB&sefc=1&txp=6318224&n=8Cbapj7jUpTJ7Q&sparams=expire%2Cei%2Cip%2Cid%2Citag%2Csource%2Crequiressl%2Cxpc%2Cbui%2Cspc%2Cvprv%2Csvpuc%2Cmime%2Cns%2Crqh%2Ccnr%2Cratebypass%2Cdur%2Clmt&sig=AJfQdSswRgIhAO8M4g8Q38xYZhy1C3mhzeC6E7VQdjqumQITygvltqJFAiEAzip08kSsceJgKal7o-rptBznwWD2RkbCNxwbAl8KBNg%3D&video_id=ZHNNW8c_FaA&redirect_counter=1&rm=sn-a5meee7l&fexp=24350485&req_id=d19d5cfcdb46a3ee&cms_redirect=yes&cmsv=e&ipbypass=yes&mh=Ha&mip=207.241.236.85&mm=31&mn=sn-o097znze&ms=au&mt=1717938525&mv=m&mvi=2&pl=20&lsparams=ipbypass,mh,mip,mm,mn,ms,mv,mvi,pl&lsig=AHlkHjAwQwIgGRbw1aJPD-yQceJkU9l-y7NNwY4mgQ5avd98ZIYcOwQCH1P_gGhiKPYfPg5Bo4xwt1GMsy7SI-5RRZY3Zgk9BUk%3D )

concludes corroborating some key points (min. 33):

"The #AMOC is weakening

The AMOC has a #TippingPoint"

while noting on this tipping point how "it is still uncertain how close it is" and how recent studies suggest that the "risk is larger than we thought"

This recommends that a "precautionary principle should apply"

19-APR-2024
Warming of Antarctic deep-sea waters contribute to sea level rise in North Atlantic, study finds

Analysis of mooring observations and hydrographic data suggest the #AtlanticMeridionalOverturningCirculation deep water limb in the #NorthAtlantic has weakened. Two decades of continual observations provide a greater understanding of the #Earth’s #climate regulating system.

https://www.eurekalert.org/news-releases/1041643 #science #ClimateCatastrophe #AMOC

Warming of Antarctic deep-sea waters contribute to sea level rise in North Atlantic, study finds

<p><em>Analysis of mooring observations and hydrographic data suggest the Atlantic Meridional Overturning Circulation deep water limb in the North Atlantic has weakened. Two decades of continual observations provide a greater understanding of the Earth’s climate regulating system.</em></p>

EurekAlert!
Simple Predictions Were Wrong: New Research Shatters Old Climate Change Assumptions

New mathematical modeling of the Atlantic Meridional Overturning – a system of ocean currents – shows greater complexity than previously thought. An international team of scientists has warned against relying on nature providing straightforward ‘early warning’ indicators of a climate disaster, as n

SciTechDaily

This one's been on my radar screen for 30+ years. Nice to see it getting a little attention. Consequences unknown but most likely to be BIG trouble. (Gifted)
https://wapo.st/48ozyWR

#TippingPoints #OceanCirculation #Greenland #MeltingIce #Thermohaline #AtlanticOcean #WaterDensity #Climate #ClimateCollapse #AtlanticMeridionalOverturningCirculation #AMOC

Why this is one of the planetary shifts scientists are most worried about

Research shows that the Atlantic Ocean’s sensitive circulation system is in danger, but scientists still don’t know how close it is to collapse.

Washington Post

James Burke did a show in 1990 about climate change aka global warming called After the Warming. Stuff in the news today always make me wonder how prescient this video was decades ago.

https://americanarchive.org/catalog/cpb-aacip_394-65h9wd4r

#ClimateChange #globalwarming #AMOC #AtlanticMeridionalOverturningCirculation #JamesBurke #Connections

Is the Gulf Stream slowing? UM scientists aim to find out :

"Beal rejected the notion of collapse because the current is wind-powered. But she said it can be affected by man-made climate change."

#AtlanticMeridionalOverturningCirculation #current #GulfStream #LisaBeal #Ocean #RosenstielSchool #sealevelrise #UniversityofMiami
#Miami #news

https://kbindependent.org/2023/08/24/is-the-gulf-stream-slowing-um-scientists-aim-to-find-out/

Is the Gulf Stream slowing? UM scientists aim to find out

Beal rejected the notion of collapse because the current is wind-powered. But she said it can be affected by man-made climate change.

Hi #mastodon #planetearth

I am here to find Peace & Beauty with the help of #nature #photography
Particularly #trees #forests and all the wonderful living things that live there
I also love looking at #birds and #flowers

I am also here to educate myself & to keep myself informed
Particularly about #ClimateScience #ClimateBreakdown #GlobalWarming #ElNino #AtlanticMeridionalOverturningCirculation #AMOC #oceans and our changing #GlobalClimate

We must #EndFossilFuels NOW

#GreenEconomy #Vegan

Scientists detect sign that a crucial ocean current is near collapse

A new analysis suggests climate change could shut down the circulation of Atlantic Ocean currents by 2050. But outside researchers say more data is needed.

The Washington Post