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Cold Blob

All articles tagged with #cold blob

Deep Atlantic Cold Blob Signals a Slowing Ocean Conveyor and Looming Climate Shifts
science1 month ago

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.

Cold Atlantic blob may fuel Europe’s heatwave, scientists say
science2 months ago

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.

Cold Atlantic Patch Signals Potential Weakening of Ocean Conveyor
environment2 months ago

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.

North Atlantic Cold Blob Signals Slower Ocean Conveyor
environment2 months ago

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.

Cold Atlantic Patch Signals a Possible AMOC Tipping Point
science2 months ago

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.

Cold North Atlantic Patch Signals Potentially Colder European Winters as AMOC Weakens
science2 months ago

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.