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☆ Scientists warn that a key Atlantic current could collapse, among other climate tipping points
▼ + stars: | 2024-11-12 | by ( Evan Bush | Evan Bush Is A Science Reporter For Nbc News. | ) www.nbcnews.com time to read: +6 min

Among other findings, it warns that several key climate tipping points appear more likely to be reached than previously thought. Ice loss from the Thwaites Glacier, also known as the “Doomsday” glacier because its collapse could precipitate rapid Antarctic ice loss, may be unstoppable. These are just a few of the stark findings from more than 50 leading snow and ice scientists, which are detailed in a new report from the International Cryosphere Climate Initiative. The report highlights a shift in consensus: Scientists once thought tipping points — like the collapse of AMOC — were distant or remote possibilities. Even if they were on track, those commitments are insufficient to reach global climate goals, the authors say.

Persons: it’s, ”, Helen Findlay, “, AMOC, Julie Brigham, We’ve, Sean Gallup, ” Findlay, Mukhtar Babayev, Donald Trump, Trump, Joe Biden, Peter Neff, there’s, ” Neff Organizations: Initiative, Southern Hemisphere, Plymouth Marine Laboratory, Copernicus, ESA, United Nations, University of Massachusetts Amherst, Getty, ”, University of Minnesota Locations: Venezuela, Atlantic, Europe, England, Iceland, Alaska, Asia, Baku, Azerbaijan, Paris, Ilulissat, Greenland, U.S

How Close Are the Planet’s Climate Tipping Points? How close today’s ice is to suffering the same fate is something scientists are still trying to figure out. Sudden Shift in the West African Monsoon0 +3 +6 +9 +12 +16 +18˚F WE ARE HERE Degrees of warming 0 +3 +6 +9 +12 +16 +18˚F WE ARE HERE Degrees of warming 0 +3 +6 +9 +12 +16 +18˚F WE ARE HERE Degrees of warmingAround 15,000 years ago, the Sahara started turning green. When it might happen: Hard to predict. “With every gram of additional CO2 in the atmosphere, we are increasing the likelihood of tipping events,” he said.

Persons: ”, Tapio Schneider, “ It’s, David Holland, Niklas Boers, “ Organizations: California Institute of Technology, West Antarctic, New York University, Animals, Amazon, Technical University of Munich, Potsdam Institute, Climate Impact Locations: Western Canada, Alaska, Siberia, Greenland, Antarctica, Sahara, North Africa, East Africa, Africa, Caribbean, Europe

☆ Atlantic Ocean currents could collapse as early as the 2030s, new research suggests
▼ + stars: | 2024-08-02 | by ( Angela Dewan | Angela Fritz | ) edition.cnn.com time to read: +4 min

CNN —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. This research suggests it’s more likely than not to collapse by 2050. The impacts of an AMOC collapse would leave parts of the world unrecognizable. The emphasis in ocean research on the timing of the collapse is a relatively new development, said Rahmstorf. This research gap means the predictions could underestimate how soon or fast a collapse would happen, Rahmstof said.

Persons: ”, René van Westen, Stefan Rahmstorf, ” Rahmstorf, “ There’s, ” Rahmstof, “, You’re, Rahmstof Organizations: CNN, University of Utrecht, Southern, Northern, Potsdam University, “ Locations: Netherlands, England, Germany, Utrecht

☆ Mars could be driving ‘giant whirlpools’ in the Earth’s deep oceans, new study finds
▼ + stars: | 2024-03-12 | by ( Laura Paddison | ) edition.cnn.com time to read: +5 min

CNN —Mars may be around 140 million miles away from Earth, but the red planet is influencing our deep oceans by helping drive “giant whirlpools,” according to new research. The sediments revealed that deep-sea currents weakened and strengthened over 2.4 million-year climate cycles, according to the study published Tuesday in the journal Nature Communications. For the Earth, this interaction with Mars translates to periods of increased solar energy — meaning a warmer climate — and these warmer cycles correlate with more vigorous ocean currents, the report found. The authors describe these currents, or eddies, as “giant whirlpools” that can reach the bottom of the deep ocean, eroding the seafloor and causing large accumulations of sediments, like snowdrifts. Deep-sea sediments build in continuous layers during calm conditions but strong ocean currents disrupt this, leaving a visible stamp of their existence.

Persons: Adriana Dutkiewicz, sedimentologist, ”, Dietmar Müller, Müller, “, ” Müller, Joel Hirschi Organizations: CNN, Nature Communications, University of Sydney, Atlantic, National Oceanography

☆ Crucial ocean current system could be on course to collapse with catastrophic impacts on global weather
▼ + stars: | 2024-02-09 | by ( Laura Paddison | ) edition.cnn.com time to read: +6 min

This new study provides an “important breakthrough,” said René van Westen, a marine and atmospheric researcher at the University of Utrecht in the Netherlands and study co-author. It’s the first time a collapse has been detectable using these complex models, representing “bad news for the climate system and humanity,” the report says. “But we can at least say that we are heading in the direction of the tipping point under climate change,” van Westen said. The AMOC’s collapse could also cause sea levels to surge by around 1 meter (3.3 feet), van Westen said. “(It) adds significantly to the rising concern about an AMOC collapse in the not too distant future,” he said.

Persons: ”, René van Westen, van Westen, ” van Westen, Stefan Rahmstorf, Rahmstorf, Joel Hirschi, Jeffrey Kargel, Hirschi, “ Organizations: CNN, Northern, University of Utrecht, Southern, Potsdam University, National Oceanography, Planetary Science Institute Locations: Atlantic, Netherlands, Europe, Germany, Arizona

Photos You Should See View All 21 Images“It also depends on the rate of climate change we are inducing as humanity,” van Westen said. The Dutch team simulated 2,200 years of its flow, adding in what human-caused climate change does to it. They found after 1,750 years “an abrupt AMOC collapse,” but so far are unable to translate that simulated timeline to Earth's real future. "This value is getting more negative under climate change,” van Westen said. The world should pay attention to potential AMOC collapse, said Joel Hirschi, division leader at the United Kingdom's National Oceanography Centre.

Persons: ”, Rene van Westen, “, ” van Westen, it's, van Westen, Stefan Rahmstorf, ” Rahmstorf, Tim Lenton, ” Lenton, Wei Cheng, Joel Hirschi, ” Hirschi, ” ___ Read, Seth Borenstein Organizations: Southern, Utrecht University, United Nations, Earth Systems, Potsdam Institute, Climate Research, ” University of Exeter, National Oceanic, Atmospheric Administration, NASA, Pacific, U.S ., United, National Oceanography, Associated Press Locations: Europe, Netherlands, Germany, Greenland, Americas, Africa, Florida, U.S, U.S . East Coast, AP.org

☆ Atlantic Ocean currents may be on the verge of collapse, which could plunge Europe into a deep freeze, a new study shows
▼ + stars: | 2024-02-09 | by ( Seth Borenstein | Associated Press | ) www.businessinsider.com time to read: +7 min

“It also depends on the rate of climate change we are inducing as humanity,” van Westen said. AdvertisementThe Dutch team simulated 2,200 years of its flow, adding in what human-caused climate change does to it. They found after 1,750 years “an abrupt AMOC collapse,” but so far are unable to translate that simulated timeline to Earth's real future. "This value is getting more negative under climate change,” van Westen said. The world should pay attention to potential AMOC collapse, said Joel Hirschi, division leader at the United Kingdom's National Oceanography Centre.

Persons: ”, Rene van Westen, “, Bob Edme, ” van Westen, it's, van Westen, Stefan Rahmstorf, ” Rahmstorf, Tim Lenton, Thwaites, ” Lenton, Wei Cheng, Joel Hirschi, ” Hirschi, ” ___ Read Organizations: Service, Southern, Utrecht University, AP, United Nations, Earth Systems, Potsdam Institute, Climate Research, University, Exeter, NASA, National Oceanic, Atmospheric Administration, Pacific, U.S ., United, National Oceanography Locations: Europe, Northwestern, Netherlands, Germany, Greenland, Americas, Africa, Florida, U.S, U.S . East Coast

A critical system of ocean currents could collapse much sooner than expected as a result of the deepening climate emergency, according to the findings of a new study, potentially wreaking havoc across the globe. The AMOC acts like a conveyor belt of currents carrying warm waters from north to south and back in a long and relatively slow cycle within the Atlantic Ocean. The circulation also carries nutrients necessary to sustain ocean life. For one, the NOAA says England would have a "much colder climate" if not for the warm waters of the Gulf Stream. The projected collapse of the AMOC is seen as a "major concern" because it is recognized as one of the most important tipping elements in the Earth's climate system.

Organizations: Nature Communications, National Oceanic, Atmospheric Administration, NOAA Locations: Europe, Florida, England

☆ Atlantic Ocean circulation is heading for a collapse around mid-century, scientists report
▼ + stars: | 2023-07-25 | by ( Laura Paddison | ) edition.cnn.com time to read: +5 min

The AMOC is a complex tangle of currents that works like a giant global conveyor belt. It transports warm water from the tropics toward the North Atlantic, where the water cools, becomes saltier and sinks deep into the ocean, before spreading southwards. The likeliest point of collapse is somewhere between 2039 and 2070, Ditlevsen said. Warming oceans and melting ice threaten to desatbilize a crucial system of ocean currents in the Atlantic. “The key point of this study is that we don’t have much time at all to do this,” de Menocal said.

Persons: ”, Peter de Menocal, Peter Ditlevsen, Ditlevsen, “, Drew Angerer, Menocal, It’s, haven’t, ” de Menocal, Stefan Rahmstorf Organizations: CNN, Oceanographic Institution, University of Copenhagen, Atlantic, University of Potsdam Locations: Europe, Greenland, Cove, Newfoundland, Canada, Germany

☆ Qatar leads Gulf bourses higher on hopes of Fed rate pause
▼ + stars: | 2023-03-26 | by ( Md Manzer Hussain | ) www.reuters.com time to read: +2 min

March 26 (Reuters) - Qatar's stock market closed higher on Sunday, outperforming other bourses in the Gulf region, as expectations of a pause in rate hikes by the U.S. Federal Reserve lifted investor sentiment. The Fed raised its main interest rate by a quarter point on Wednesday, but signaled it would consider a pause in light of banking system stresses. The Qatari Stock index (.QSI) climbed 1.2%, extending its rally to a third straight session. The index recorded an advance in all sectors, with the Gulf's biggest lender Qatar National Bank (QNBK.QA) rising 3.1% and Qatar Islamic Bank (QISB.QA) adding 2.7%. The index was lifted up by a 15.1% jump in Sidi Kerir (SKPC.CA) and a 7% rise in Fawry Banking (FWRY.CA).

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