I followed qserasera's link to the Nature paper. The Methods [1] section says: > I also use Florida Current transport from submarine telephone cables at 27∘N b

I followed qserasera's link to the Nature paper. The Methods [1] section says: > I also use Florida Current transport from submarine telephone cables at 27∘N between West Palm Beach and Grand Bahama (Figs. 1b and 2). Using electromagnetic theory, one can estimate changes in the flow from voltages induced across the cable due to the transport of charged particles by the variable current. [1] https://www.nature.com/articles/s41467-020-17761-w#Sec8 https://www.nature.com/articles/s41467-020-17761-w#Sec8