Tag

Amoc

All articles tagged with #amoc

earth-science1 day ago•17 min saved

Atlantic Conveyor at Risk: New Analysis Suggests AMOC Collapse Could Be Locked In by 2100

A climate-model study, using Greenland ice melt scenarios, suggests the Atlantic Meridional Overturning Circulation (AMOC) may already be locked in toward collapse, with a 10% chance under peak 2025 emissions, rising to 23% in harsher melt scenarios—and potentially 100% by 2100 in the worst case. A collapse would trigger dramatic regional impacts, including sea-level rise along the U.S. East Coast, cooler temperatures for parts of Europe, and more extreme weather. The work is a preprint and debated, but it underscores the urgency of rapid emissions reductions to avert severe climate outcomes.

via Gizmodo|

#amoc #atlantic-ocean #climate-change

science4 days ago•17 min saved

The North Atlantic 'cold blob' could reshape Europe’s weather, scientists warn

Ongoing heatwaves are shadowed by a large cool patch in the North Atlantic known as the “cold blob,” which scientists think may signal changes in the Atlantic Meridional Overturning Circulation (AMOC). Fresh Greenland meltwater and altered heat exchange could slow the sinking of warm water, weakening AMOC and nudging the jet stream, potentially bringing more European heatwaves in the near term while raising the possibility of colder European conditions if the current weakens further. The science is still debated on exact causes and timing, but climate models generally project some AMOC weakening this century, underscoring the need to cut greenhouse gas emissions to mitigate risk.

via The Independent|

#amoc #climate-change #heatwave

science9 days ago•2 min saved

Deep Atlantic Cold Blob Signals a Slowing Ocean Conveyor and Looming Climate Shifts

A new climate reanalysis-backed study links a persistent cold patch southeast of Greenland to a weakening Atlantic Meridional Overturning Circulation (AMOC). While surface heat loss has declined since 1955, deep-water temperatures drop as much as 1,000 meters below the surface, suggesting less warm water entering the region. If AMOC continues to weaken or collapses, Europe could cool, tropical rainfall patterns could be disrupted, and sea levels near the US East Coast could rise; however, scientists caution that the debate over the cold blob and AMOC's status is not yet settled.

via Futurism|

#amoc #climate-change #cold-blob

science15 days ago•49 min saved

Cold Atlantic blob may fuel Europe’s heatwave, scientists say

A patch of unusually cold water in the subpolar North Atlantic, nicknamed the cold blob, has been linked to Europe’s heatwaves by influencing atmospheric circulation and the jet stream. While global temperatures rise, this region remains cooler due to ocean currents delivering less heat and Greenland meltwater adding freshwater, which may weaken the Atlantic Meridional Overturning Circulation (AMOC). Scientists warn that a further slowdown or collapse of the AMOC could bring harsher European winters, droughts elsewhere, and higher sea levels, though a cold Atlantic patch does not erase warming and extreme heat can persist under certain jet-stream patterns.

via Yahoo|

#amoc #cold-blob #europe-heatwave

environment25 days ago•1 min saved

Cold Atlantic Patch Signals Potential Weakening of Ocean Conveyor

A large cold patch nicknamed the 'cold blob' south of Greenland is cooling the North Atlantic by about 2°F since 1900, suggesting the Atlantic Meridional Overturning Circulation (AMOC) is weakening due to warming and fresh water from melting ice; a significant slowdown or collapse could raise U.S. East Coast sea levels, bring colder European winters, and trigger droughts in Africa.

via WDBJ7|

#amoc #climate-change #cold-blob

environment25 days ago•2 min saved

North Atlantic Cold Blob Signals Slower Ocean Conveyor

Scientists link a persistent cooling anomaly south of Greenland—the North Atlantic 'cold blob'—to a slowdown in the Atlantic Meridional Overturning Circulation (AMOC). A weaker AMOC could reduce the ocean's heat transport, shifting weather, storm tracks, and potentially accelerating sea-level rise along the U.S. East Coast, with the strongest impacts near Greenland, Iceland, and northern Europe.

via USA Today|

#amoc #cold-blob #environment

science29 days ago•12 min saved

Ancient Gulf Stream migration flags caution for a warming Atlantic

A sediment core off Nova Scotia shows the Gulf Stream migrated north during the Younger Dryas, warming Atlantic Canada by up to 4–5°C and triggering changes in deep water circulation. This offers direct geological evidence that major Atlantic circulation reorganizations can occur during abrupt climate shifts, supporting models that a weakened AMOC under modern warming could reshape global ocean temperatures and weather patterns in coming decades.

via The Conversation|

#amoc #climate-change #gulf-stream

science1 month ago•2 min saved

Ocean Conveyor Slowing Could Spark Global Weather Shifts

Evidence cited by New Scientist shows the Atlantic Meridional Overturning Circulation is weakening, allowing cold Greenland waters to pool in the North Atlantic and form a 'cold blob' that can disrupt the jet stream and drive extreme weather; some models warn of a potential climate tipping point by around 2040, though scientists debate whether the slowdown is driven more by oceanic processes or atmospheric forces.

via Futurism|

#amoc #climate-change #extreme-weather

science1 month ago•5 min saved

Cold Atlantic Patch Signals a Possible AMOC Tipping Point

A new analysis ties the North Atlantic 'cold blob' to a weakening Atlantic Meridional Overturning Circulation (AMOC), showing reduced heat transport into the region rather than increased surface heat loss. The finding suggests the AMOC is near a dangerous tipping point with wide climate implications, including potential changes to European winters and global weather, aligning with CMIP6 projections and recent studies indicating a possible slowdown or collapse mid-century.

via ScienceAlert|

#amoc #climate-change #cold-blob

science1 month ago•81 min saved

Cold Atlantic Patch Signals Gulf Stream Slowdown and East Coast Risks

New study links the Atlantic's cooling 'cold blob' south of Greenland to a weakening Atlantic Meridional Overturning Circulation (AMOC), implying reduced heat transport and a sign of a climate tipping point. If AMOC collapses, Northern Hemisphere temperatures could drop dramatically (10–15°C in parts of the north), with heat and drought disruptions across Europe and rising sea levels along the US East Coast. Yet the exact rate of AMOC weakening is uncertain, and some researchers attribute the blob to surface heat loss rather than interior transport. The findings come as policy moves to remove deep-sea monitoring instruments could hamper tracking of this critical system.

via Live Science|

#amoc #climate-tipping-point #gulf-stream

weather1 month ago•20 min saved

Cold North Atlantic Blob Signals Possible Shifts in Ocean Circulation

An unusually cool patch in the North Atlantic east of Newfoundland has persisted for about a year, potentially signaling a weakening Atlantic Meridional Overturning Circulation (AMOC) that could eventually cool climates around Greenland, Iceland, and northern Europe if it lasts; however, scientists say a total AMOC collapse is unlikely before 2100 and the blob’s long‑term impact remains uncertain.

via The Washington Post|

#amoc #climate-change #greenland

science1 month ago•5 min saved

Cold North Atlantic Patch Signals Potentially Colder European Winters as AMOC Weakens

A cooling patch southeast of Greenland, nicknamed the cold blob or warming hole, is linked to a weakening Atlantic Meridional Overturning Circulation (AMOC). New work suggests freshwater from melting Greenland ice is driving the cooling, and a weaker AMOC could reduce heat transport to Europe, potentially sparking colder, longer winters—though the data are not yet conclusive and other factors may also be involved.

via Metro.co.uk|

#amoc #cold-blob #europe-weather

rivers-and-oceans1 month ago•55 min saved

Trump administration moves to pull 900 deep-sea sensors, risking Atlantic current data

The Trump administration plans to remove over 900 deep-sea instruments from the Ocean Observatories Initiative, dismantling four arrays in the Atlantic and Pacific as part of a shift to a leaner lifecycle approach. NSF says it is not canceling ocean science, but prioritizing evolving priorities and technologies, with only the Regional Cabled Array remaining. The cut threatens long-running, real-time data on ocean conditions and the Atlantic meridional overturning circulation (AMOC), potentially hindering climate research and monitoring, even as a substantial 2026 funding cut was proposed elsewhere in the NSF budget.

via Live Science|

#amoc #nsf #ocean

climate1 month ago•185 min saved

Trump Admin Dismantles Vital Deep-Ocean Monitoring Network

The Trump administration will dismantle the Ocean Observatories Initiative, a $368 million deep-ocean monitoring network with about 900 instruments across the Pacific and Atlantic, removing in-water infrastructure over 15 months. Scientists warn the move could hamper fisheries management, weather forecasting, and understanding the Atlantic Meridional Overturning Circulation amid record ocean warming and an impending El Niño.

via CNN|

#amoc #climate #nsf

science2 months ago•5 min saved

Arctic Ocean’s Hidden Waterfall Is Earth’s Largest by Volume

NOAA-backed research reveals the Denmark Strait cataract, an underwater waterfall beneath the Arctic between Iceland and Greenland, draining cold Nordic Sea water downward at about 3.2 million cubic meters per second (≈123 million cubic feet per second). It’s the world’s largest waterfall by volume, though invisible to ships, and it helps drive the Atlantic Meridional Overturning Circulation, influencing Europe’s climate and marine ecosystems. Warming could weaken or alter this flow, with potential global climate implications.

via Indian Defence Review|

#amoc #arctic #climate