Fascinating and important for our future: the European Space Agency ESA plans to monitor changes in the Atlantic Ocean Circulation #AMOC from satellite with a new gravity mission.
That is important since the AMOC may be approaching a #tippingpoint.

https://www.esa.int/Applications/Observing_the_Earth/FutureEO/New_ESA_gravity_mission_to_detect_weakening_ocean_conveyor