The great ocean conveyor belt is a colloquial term that is used to refer to the loosely organised band of currents that circulate around the world’s oceans.  In the Atlantic sector, we’ve taken to calling this the ‘Atlantic meridional overturning circulation’ (aka AMOC) where near surface waters (top 1km) move northwards and deep currents (between 1km and 4km depth) move southwards.  What is this system of currents?  What has it been doing lately?  Read on to find out more…