amoc collapse is not about if, but about when:
https://www.youtube.com/watch?v=GDy7Q8iAtFg (30:45)
-- geminiGPT: --
This video from Astrum Earth explores the Atlantic Meridional
Overturning Circulation (AMOC), a vital system of ocean currents often called the "conveyor belt" of our planet. The narrator, James Stewart, explains that the AMOC is essential for regulating the global climate by moving heat, nutrients, and carbon throughout the Atlantic (0:00 - 8:05).
Key takeaways from the video:
The System's Function: The AMOC acts as a massive heat pump. It carries
warm surface water from the tropics toward the North Atlantic and
returns cold, dense, salty water to the deep ocean, which is crucial for maintaining temperate climates in Europe (6:11 - 8:05, 8:44 - 9:17).
Evidence of Weakening: Scientists have observed a "cold blob" in the
North AtlanticrCothe only region cooling while the rest of the world warms rCoand record-low salinity levels, suggesting the AMOC has slowed by
roughly 15% since 1950 (2:16 - 3:00, 10:14 - 11:10).
Climate Change Impact: Melting ice, particularly from Greenland, adds
fresh water to the ocean. This reduces water density, making it harder
for the current to sink and continue its cycle, potentially pushing the system toward a "tipping point" (11:01 - 13:42).
Consequences of Collapse: If the AMOC were to collapse, Europe could see temperature drops of 3-#C to 10-#C, a massive increase in winter storms, disrupted rainfall patterns impacting agriculture (such as in the
Amazon), and rising sea levels along the Atlantic coast (21:24 - 23:18).
When Could It Happen? While some recent studies have sparked headlines suggesting a collapse as early as 2025, the video notes these models are heavily debated and potentially unreliable. The scientific consensus,
while shifting toward higher concern, generally looks toward the mid- century or later for critical thresholds (17:27 - 21:00, 28:22 - 28:44).
The video concludes that while the AMOC has collapsed geologically in
the past, a collapse today would be a humanitarian crisis for our
modern, interconnected civilization. The primary solution is to
aggressively mitigate the global warming driving these changes (28:47 - 29:53).
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when do u think amoc collapse will be:
by 2050? by 2100? by 2150? or by 2200?
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