This summer has seen very low sea surface temperature anomalies in the North Atlantic.
Using animations of these over the last year I feel the runoff of freshwater from Hudson Bay, into the Labrador current, and in turn into the Gulf Stream component of the AMOC, has been a cause of the disruption of heat transfer to the North Atlantic Drift.
Would this be correct? Has the runoff into Hudson Bay increased since September last year compared to a 10 year average?