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☆ Global ocean heat has been at record levels every single day for the last year
▼ + stars: | 2024-03-18 | by ( Laura Paddison | ) edition.cnn.com time to read: +3 min

But he added that the records were unsurprising, given that ocean heat is being supercharged by human-caused global warming, a series of marine heatwaves and El Niño, a natural climate pattern marked by higher-than-average ocean temperatures. Global ocean warmth can add more power to hurricanes and other extreme weather events, including scorching heat waves and intense rainfall. Ocean heat sets the stage for more ferocious hurricanes. “Measuring ocean warming allows us to track the status and evolution of planetary warming,” Schuckmann told CNN. But, she added, it’s currently impossible to predict when ocean heat will drop below record levels.

Persons: ”, Joel Hirschi, El, Karina von Schuckmann, Brian McNoldy, ” Hirschi, ” Schuckmann, it’s, Derek Van Dam Organizations: CNN, National Oceanic, Atmospheric Administration, University of Maine’s, National Oceanography, University of Miami Rosenstiel School Locations: Australia, France

☆ 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

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