Strange Atlantic cold spot traced to ocean slowdown 🌊❄️🌀
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#AtlanticColdSpot #OceanSlowdown #ClimateChange #EnvironmentalScience #Oceanography
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#AtlanticColdSpot #OceanSlowdown #ClimateChange #EnvironmentalScience #Oceanography
University of California, Riverside
Strange Atlantic cold spot traced to ocean slowdown
For more than a century, a patch of cold water south of Greenland has resisted the Atlantic Ocean’s overall warming, fueling debate amongst scientists. A new study identifies the cause as the long-term weakening of a major ocean circulation system.
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Direct ocean measurements confirm a consistent decline in the Atlantic Meridional Overturning Circulation (AMOC) over 20 years. Sensors from the Caribbean to Canada reveal a weakening trend in deep currents that regulate European and North American climates.
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#AMOC #Oceanography #ClimateChange
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#AMOC #Oceanography #ClimateChange
Science Advances
Meridionally consistent decline in the observed western boundary contribution to the Atlantic Meridional Overturning Circulation
Western boundary observations in the Atlantic suggest a meridionally consistent decline in the ocean overturning circulation.
Science News
Antarctica has flipped from a climate stabilizer to a driver of global warming. A new study reveals a "triple-whammy" of deep-sea heat and winds caused ice loss the size of Greenland, trapping the ocean in a cycle of record lows that threatens global ocean…
📉 Antarctic sea ice hit its lowest point since the 1970s in 2023, showing a decline that began in 2015.
💨 Analysis of 2013-2023 data points to three key phases: increased westerly winds preconditioned the ocean with warm deep water, strong winds in 2015-2016 mixed this warm water into the upper ocean initiating ice loss, and sustained mixing along with reduced freshwater export locked in the low ice state.
🌊 East Antarctic sea ice loss was mainly driven by subsurface warming, while West Antarctic loss was also influenced by cloud effects on heat radiation.
#AntarcticSeaIce #ClimateScience #Oceanography
💨 Analysis of 2013-2023 data points to three key phases: increased westerly winds preconditioned the ocean with warm deep water, strong winds in 2015-2016 mixed this warm water into the upper ocean initiating ice loss, and sustained mixing along with reduced freshwater export locked in the low ice state.
🌊 East Antarctic sea ice loss was mainly driven by subsurface warming, while West Antarctic loss was also influenced by cloud effects on heat radiation.
#AntarcticSeaIce #ClimateScience #Oceanography
Science News
Galápagos corals show El Niño events are more extreme in the last 40 years than in any time in the past millennium, according to analysis of growth pattern, suggesting influence of climate change Read Full Article #ElNino #ClimateChange #GalapagosCoral
🌡️ Recent El Niño events have been the strongest in the past millennium, with higher ocean temperatures causing more extreme weather globally.
🐠 Studies using ancient and living corals in the Galápagos reveal that El Niños in the past 40 years are stronger than any time in the last 1,000 years.
📈 This intensification of El Niño events coincides with human-caused global warming, suggesting a link between rising temperatures and more destructive climate patterns.
🌍 Past strong El Niños, like the 1982-83 event, caused global climate extremes, including flooding and drought, with the 1982-83 event costing up to US$4 trillion globally.
#ElNino #ClimateChange #Oceanography
🐠 Studies using ancient and living corals in the Galápagos reveal that El Niños in the past 40 years are stronger than any time in the last 1,000 years.
📈 This intensification of El Niño events coincides with human-caused global warming, suggesting a link between rising temperatures and more destructive climate patterns.
🌍 Past strong El Niños, like the 1982-83 event, caused global climate extremes, including flooding and drought, with the 1982-83 event costing up to US$4 trillion globally.
#ElNino #ClimateChange #Oceanography
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Science News
Earth's mysterious 'hum' points to the sound of waves crashing across the world. Scientists first recorded Earth's low-frequency "hum" in the 1960s, but its origin was a mystery. It is now believed the hum is caused by ocean swells in the Southern Ocean, the…
🌍 Scientists believe Earth's mysterious low-frequency "hum," first detected in the 1960s, is caused by ocean swells generated in the Southern Ocean.
🌊 These swells create tiny vibrations that travel through the planet, amplified by interactions with the Earth's crust.
🎤 Melbourne scientist Rohan Byrne recorded the hum and coincidentally captured the rumble of a distant earthquake, highlighting ongoing discoveries about Earth's workings.
#EarthScience #Oceanography #ScienceNews
🌊 These swells create tiny vibrations that travel through the planet, amplified by interactions with the Earth's crust.
🎤 Melbourne scientist Rohan Byrne recorded the hum and coincidentally captured the rumble of a distant earthquake, highlighting ongoing discoveries about Earth's workings.
#EarthScience #Oceanography #ScienceNews
Science News
A research team discovered that a massive hole the size of Portugal in Antarctica's winter sea ice was caused by a combination of intense atmospheric rivers and marine heatwaves. Read Full Article #Antarctica #SeaIce #ClimateChange
🧊 August 2024 saw an unprecedented open water area (polynya) of 89,121 sq km in Breid Bay, East Antarctica, larger than Portugal, during a time it's usually frozen solid.
💨 This massive hole was caused by extreme weather: six intense atmospheric rivers ("rivers in the sky") and marine heatwaves brought warm, moist air and ocean water, suppressing sea ice growth and bringing warmer subsurface water to the surface.
📉 Antarctica recorded its third-lowest winter sea ice extent this year, with the four lowest records occurring in the past four years, highlighting a concerning trend driven by human-caused climate change.
#Antarctica #ClimateChange #Oceanography
💨 This massive hole was caused by extreme weather: six intense atmospheric rivers ("rivers in the sky") and marine heatwaves brought warm, moist air and ocean water, suppressing sea ice growth and bringing warmer subsurface water to the surface.
📉 Antarctica recorded its third-lowest winter sea ice extent this year, with the four lowest records occurring in the past four years, highlighting a concerning trend driven by human-caused climate change.
#Antarctica #ClimateChange #Oceanography
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