Cold blob

They published their findings, and concluded that the AMOC circulation shows exceptional slowdown in the last century, and that Greenland melt is a possible contributor.

A 2014 study by Jon Robson et al. from the University of Reading concluded about the anomaly, "...suggest that a substantial change in the AMOC is unfolding now.

[7] A study published in 2016, by researchers from the University of South Florida, Canada and the Netherlands, used GRACE satellite data to estimate freshwater flux from Greenland.

They concluded that freshwater runoff is accelerating, and could eventually cause a disruption of AMOC in the future, which would affect Europe and North America.

Additionally, the study noted: "Our results suggest that higher carbon emission rates also contribute to increased [sea level rise] in this region compared to the global average".

The cold blob visible on NASA's global mean temperatures for 2015, then the warmest year in NASA's temperature series – colors indicate temperature anomalies ( NASA / NOAA ; 20 January 2016). [ 1 ]
AMOC-Index since 900 CE with pronounced slowdown since ~1850; Rahmstorf et al. (2015) [ 5 ]