In NAHosMIP we designed and conducted a set of experiments to explore hysteresis and sensitivity to additional freshwater of the Atlantic Meridional Overturning Circulation (AMOC). These experiments include adding additional freshwater (hosing) for a fixed length of time to examine the rate and mechanisms of AMOC weakening and whether the AMOC subsequently recovers once hosing stops. The main aims of this project are to understand feedbacks contributing to AMOC collapse and recovery.