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Marine Science

Open ocean waves

The Atlantic Meridional Overturning Circulation is weakening in the deep sea of the North Atlantic Ocean, Study Finds

The AMOC consists of an upper cell and a deep sea or abyssal cell that sits underneath. The upper cell transports warm water from the subtropical South Atlantic Ocean across the equator northward toward high latitudes in the North Atlantic, where it cools, sinks, and flows equatorward as cold deep water. It sits atop a cell of colder, denser water at the ice edge of Antarctica known as the abyssal cell. These waters flow north along the seafloor into the North Atlantic where they slowly rise and mix with other waters that flow back to the south. Together, these cells carry a maximum of 25% of the net global ocean and atmosphere energy (heat) transport.

The Atlantic Meridional Overturning Circulation is weakening in the deep sea of the North Atlantic Ocean, Study Finds Read More >

Recent “Triple-Dip” La Niña upends current understanding of ENSO 

With the current El Niño in full force, researchers are still puzzling over the 2020–2023 La Niña that upended current understanding of El Niño Southern Oscillation (ENSO) dynamics. The three consecutive years of La Niña conditions – a rare “triple-dip” phenomenon – had widespread impacts on the ocean and climate across the globe. While triple-dip La Niñas have happened before, this one was notable in that it did not conform to conventional theories on how these extended La Niñas develop, leaving scientists searching for clues to explain what caused it.

Recent “Triple-Dip” La Niña upends current understanding of ENSO  Read More >

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