Antarctic Circumpolar Current, Direction, Temperature

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Antarctic Circumpolar Current Latest News

A groundbreaking study has revealed that the Antarctic Circumpolar Current (ACC)—the world’s most powerful ocean current—is slowing down due to melting ice sheets.

About Antarctic Circumpolar Current

The Antarctic Circumpolar Current (ACC) is the strongest ocean current globally, flowing clockwise (from west to east) around Antarctica and connecting the Atlantic, Pacific, and Indian Oceans.
As the only ocean current connecting the Atlantic, Pacific, and Indian Oceans, the ACC is five times stronger than the Gulf Stream and over 100 times more powerful than the Amazon River.
- The Antarctic Circumpolar Current separates the Southern Ocean from the Atlantic, Pacific, and Indian oceans at 60° S latitude, which roughly coincides with the current’s southern boundary.
It plays a critical role in regulating Earth’s climate by distributing heat, water, and nutrients worldwide. Beyond climate regulation, the ACC acts as a natural barrier, preventing non-native marine species from reaching Antarctica.
However, the rapid melting of Antarctic ice due to rising global temperatures is introducing large volumes of freshwater into the ocean, which can disrupt the ACC’s flow.

Potential Impacts of ACC Slowdown

Climate Regulation: A slowdown of the ACC could lead to more extreme climate events and alter weather patterns globally.
Marine Ecosystems: Changes in the ACC can disrupt nutrient distribution, affecting marine biodiversity and fisheries.
Carbon Sequestration: The ocean’s ability to absorb carbon dioxide may decrease, potentially accelerating global warming.