AMOC

You already know abut the North American Conveyor current. Briefly: The major ocean currents happen because the equatorial ocean is warmer, and since water (unlike land) can move (though not as fast as air) the dissipation of this heat across the surface of the Earth results in warm water moving, at the surface, north or south away from the Equator, where it loses its heat and finds it way back to the equatorial regions, usually as deeper, cooler water. Conveniently, this process also involves increasing the salinity of the water far from the equator, as evaporating water becomes saltier.…
Storms like last weekend's blizzard and widespread snowfall can happen, in theory, any winter, but large snowfall storms in the US Northeast have been significantly more common in recent years than in previous recorded history. Over the last few years we've seen these large snowfalls happen farther south than usual, as was the case with the 2016 Blizzard. Climate scientists are pretty sure that this blizzard was either outright caused or significantly enhanced (you really can't tell the difference) by human caused global warming. How can a blizzard, a big cold thing, be caused by warming…
Climate scientists have noticed a disturbing pattern in the North Atlantic. This is the relative cooling of surface waters in the area fed by the Gulf Stream. This pattern has emerged over recent decades, and may portend very rapid and potentially disruptive climate change in the upcoming decades. The cooling is not subtle at all, and looks like this: Map based on NASA GISS data of warming 1901-2013 So what does this mean? A paper out just today describes, explains, and discusses this odd anomaly and its potential consequences. First, a bit of context. The Earth’s climate follows certain…