AMOC: Could changing ocean currents affect weather? - What in the World podcast, BBC World Service

Disaster movie The Day After Tomorrow showed the world hit by extreme weather events caused by disruption to the Atlantic Meridional Overturning Circulation (AMOC).

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Today, even though the events of the film are highly unlikely to happen, scientists are concerned by changes to the AMOC.

The AMOC is a massive north-south system of currents in the Atlantic Ocean that carries warm surface water towards the Arctic and returns colder water thousands of miles south through the deep ocean. It impacts weather patterns across the world from north-west Europe, to west Africa and all the way to India. However, scientists are worried that climate change is weakening the system which could lead to dramatic changes in weather around the world.

BBC Weather presenter Sarah Keith-Lucas explains what the AMOC is, what exactly scientists are worried about and what the potential impacts could be if the AMOC is weakened or collapses entirely.

00:00 Introduction
00:27 What is the Atlantic Meridional Overturning Circulation?
02:53 Why does it exist?
03:26 What does the AMOC impact around the world?
05:05 What are the jet stream and Gulf stream?
06:26 Why some scientists about worried about climate change impacting the AMOC
08:25 What is the ‘cold blob’ in the North Atlantic Ocean?
09:37 What would happen if the AMOC weakens or collapses?
11:33 Could ‘The Day After Tomorrow’ happen in real life?
12:55 What can we do to prevent damage to the AMOC?

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Presenter: William Lee Adams
Producers: Adam Chowdhury
Video Producer: Adam Chowdhury
Editors: Emily Horler & Verity Wilde
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