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Scientists Warn Major Ocean Current System Could Collapse

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An important system of ocean currents that circulates water around the planet could significantly slow down or even stop completely in just a few decades, according to a shocking new study released Tuesday.

The network is called the Atlantic Meridional Overturning Circulation, or AMOC, which includes the Gulf Stream. It’s a series of ocean currents that brings warm water north, and cold water south across the Atlantic Ocean, part of a “global conveyor belt” that impacts weather patterns across North America, Europe, Asia and Africa, according to NOAA.

Researchers in Denmark analyzed sea surface temperatures to determine the strength of the AMOC, using data from 1870 to 2020. The pair, Susanne Ditlevsen of the University of Copenhagen, and her brother, Peter Ditlevsen of the university’s Niels Bohr Institute, then created a statistical model to analyze early-warning signals that there are problems with the current network.

The authors concluded the AMOC could collapse at any point between now and 2095, even as early as 2025.

Their models rely on “the current scenario of future emissions,” assuming that greenhouse gases would continue to be released into the atmosphere without dramatic steps to reduce them. The new research was published Tuesday in the journal Nature Communications.

The global conveyor belt, shown in part here, circulates cool subsurface water and warm surface water throughout the world. The Atlantic Meridional Overturning Circulation, or AMOC, is part of this complex system of global ocean currents.

The global conveyor belt, shown in part here, circulates cool subsurface water and warm surface water throughout the world. The Atlantic Meridional Overturning Circulation, or AMOC, is part of this complex system of global ocean currents.

A collapse “would have severe impacts on the climate in the North Atlantic region,” the authors wrote, and represent one of the most important “tipping points” as the planet’s climate changes. Other tipping points — which represent irreversible shifts to the planet — include the melting of the Greenland ice sheet, the destruction of the Amazon rainforest and the thawing of the permafrost.

The Washington Post notes the analysis is different from that in the most recent climate report by the United Nations Intergovernmental Panel on Climate Change. The ICCC concluded at the time it had “medium confidence” the AMOC would not fully collapse this century.

Projects to monitor the health of the AMOC have been gathering data since 2004, but some scientists also say that the short time frame isn’t long enough to extrapolate predictions about how the ocean could change over the coming decades.

The authors of the paper also acknowledged that they could not rule out “other mechanisms are at play” in the changes to the AMOC.

Still, Michael Mann, a climate scientist at the University of Pennsylvania, told Axios that while there were some questions about the study’s results, they only added to growing concern about the state of the planet amid uncontrolled climate change.

“I think the authors in this case are on to something real,” Mann told the outlet.

The sudden shutdown of the AMOC was the key element in the 2004 disaster movie, “The Day After Tomorrow.” While the actual collapse of the current system is unlikely to produce immediate catastrophic weather changes, it could cause colder temperatures in northern Europe and warming in tropical zones, Peter Ditlevsen told the Post.

“This is a really worrying result,” he said, adding to the publication that the evidence demonstrated further need for a “hard foot on the break” of carbon emissions.

The authors said the results should call for “fast and effective measures to reduce global greenhouse gas emissions.”

 

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The body of a Ugandan Olympic athlete who was set on fire by her partner is received by family

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NAIROBI, Kenya (AP) — The body of Ugandan Olympic athlete Rebecca Cheptegei — who died after being set on fire by her partner in Kenya — was received Friday by family and anti-femicide crusaders, ahead of her burial a day later.

Cheptegei’s family met with dozens of activists Friday who had marched to the Moi Teaching and Referral Hospital’s morgue in the western city of Eldoret while chanting anti-femicide slogans.

She is the fourth female athlete to have been killed by her partner in Kenya in yet another case of gender-based violence in recent years.

Viola Cheptoo, the founder of Tirop Angels – an organization that was formed in honor of athlete Agnes Tirop, who was stabbed to death in 2021, said stakeholders need to ensure this is the last death of an athlete due to gender-based violence.

“We are here to say that enough is enough, we are tired of burying our sisters due to GBV,” she said.

It was a somber mood at the morgue as athletes and family members viewed Cheptegei’s body which sustained 80% of burns after she was doused with gasoline by her partner Dickson Ndiema. Ndiema sustained 30% burns on his body and later succumbed.

Ndiema and Cheptegei were said to have quarreled over a piece of land that the athlete bought in Kenya, according to a report filed by the local chief.

Cheptegei competed in the women’s marathon at the Paris Olympics less than a month before the attack. She finished in 44th place.

Cheptegei’s father, Joseph, said that the body will make a brief stop at their home in the Endebess area before proceeding to Bukwo in eastern Uganda for a night vigil and burial on Saturday.

“We are in the final part of giving my daughter the last respect,” a visibly distraught Joseph said.

He told reporters last week that Ndiema was stalking and threatening Cheptegei and the family had informed police.

Kenya’s high rates of violence against women have prompted marches by ordinary citizens in towns and cities this year.

Four in 10 women or an estimated 41% of dating or married Kenyan women have experienced physical or sexual violence perpetrated by their current or most recent partner, according to the Kenya Demographic and Health Survey 2022.

The Canadian Press. All rights reserved.

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The ancient jar smashed by a 4-year-old is back on display at an Israeli museum after repair

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TEL AVIV, Israel (AP) — A rare Bronze-Era jar accidentally smashed by a 4-year-old visiting a museum was back on display Wednesday after restoration experts were able to carefully piece the artifact back together.

Last month, a family from northern Israel was visiting the museum when their youngest son tipped over the jar, which smashed into pieces.

Alex Geller, the boy’s father, said his son — the youngest of three — is exceptionally curious, and that the moment he heard the crash, “please let that not be my child” was the first thought that raced through his head.

The jar has been on display at the Hecht Museum in Haifa for 35 years. It was one of the only containers of its size and from that period still complete when it was discovered.

The Bronze Age jar is one of many artifacts exhibited out in the open, part of the Hecht Museum’s vision of letting visitors explore history without glass barriers, said Inbal Rivlin, the director of the museum, which is associated with Haifa University in northern Israel.

It was likely used to hold wine or oil, and dates back to between 2200 and 1500 B.C.

Rivlin and the museum decided to turn the moment, which captured international attention, into a teaching moment, inviting the Geller family back for a special visit and hands-on activity to illustrate the restoration process.

Rivlin added that the incident provided a welcome distraction from the ongoing war in Gaza. “Well, he’s just a kid. So I think that somehow it touches the heart of the people in Israel and around the world,“ said Rivlin.

Roee Shafir, a restoration expert at the museum, said the repairs would be fairly simple, as the pieces were from a single, complete jar. Archaeologists often face the more daunting task of sifting through piles of shards from multiple objects and trying to piece them together.

Experts used 3D technology, hi-resolution videos, and special glue to painstakingly reconstruct the large jar.

Less than two weeks after it broke, the jar went back on display at the museum. The gluing process left small hairline cracks, and a few pieces are missing, but the jar’s impressive size remains.

The only noticeable difference in the exhibit was a new sign reading “please don’t touch.”

The Canadian Press. All rights reserved.

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B.C. sets up a panel on bear deaths, will review conservation officer training

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VICTORIA – The British Columbia government is partnering with a bear welfare group to reduce the number of bears being euthanized in the province.

Nicholas Scapillati, executive director of Grizzly Bear Foundation, said Monday that it comes after months-long discussions with the province on how to protect bears, with the goal to give the animals a “better and second chance at life in the wild.”

Scapillati said what’s exciting about the project is that the government is open to working with outside experts and the public.

“So, they’ll be working through Indigenous knowledge and scientific understanding, bringing in the latest techniques and training expertise from leading experts,” he said in an interview.

B.C. government data show conservation officers destroyed 603 black bears and 23 grizzly bears in 2023, while 154 black bears were killed by officers in the first six months of this year.

Scapillati said the group will publish a report with recommendations by next spring, while an independent oversight committee will be set up to review all bear encounters with conservation officers to provide advice to the government.

Environment Minister George Heyman said in a statement that they are looking for new ways to ensure conservation officers “have the trust of the communities they serve,” and the panel will make recommendations to enhance officer training and improve policies.

Lesley Fox, with the wildlife protection group The Fur-Bearers, said they’ve been calling for such a committee for decades.

“This move demonstrates the government is listening,” said Fox. “I suspect, because of the impending election, their listening skills are potentially a little sharper than they normally are.”

Fox said the partnership came from “a place of long frustration” as provincial conservation officers kill more than 500 black bears every year on average, and the public is “no longer tolerating this kind of approach.”

“I think that the conservation officer service and the B.C. government are aware they need to change, and certainly the public has been asking for it,” said Fox.

Fox said there’s a lot of optimism about the new partnership, but, as with any government, there will likely be a lot of red tape to get through.

“I think speed is going to be important, whether or not the committee has the ability to make change and make change relatively quickly without having to study an issue to death, ” said Fox.

This report by The Canadian Press was first published Sept. 9, 2024.

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