Yet another prediction of doom over Greenland ice melt and the AMOC that we can ignore

Climate science is chock full of urban legends.
World Wide Discrete Ocean Conveyor Urban Legend
There is no discrete ocean circulation system for a melt pulse to interrupt. The silly picture drawing of a world covering thermal haline ‘conveyor’ system has no scientific basis. That urban legend develop from a picture Wally Broeker drew in a paper with zero scientific justification.
Interrupt to North Atlantic Drift Current has anything to do with cyclic abrupt climate change Urban Legend
The largest melt pulse in last 15,000 thousand years occurred more than 1000 years before the Younger Dryas abrupt cooling event. It caused no cooling. Even if a melt pulsed could interrupt the North American drift current atmospheric/ocean modeling indicates Europe would only cool 2 to 3 degrees Celsius. The primary reason Europe is warmer than east coast of the US in the winter is the same reason why the west coast of the US is warmer than the east coast of the US in the winter. Due to the rotation of the earth the jet stream and the prevailing winds flow from west to east. The ocean warms in the summer due to increased sunlight in the summer. That heat is released in the winter and is more than order more than the heat released by the North Atlantic drift current.
Wally Broeker also started the myth that the cyclic abrupt climate change is caused by an interruption to the North Atlantic drift current. The North Atlantic drift current is not ‘part of the solution’ of what causes abrupt cyclic climate change.
The third urban legend in climate ‘science’ is that the planet’s climate has a ‘tendency’ to jump from one state to another. Rocks do not jump up hill. There is a physical reason for the Younger Dryas abrupt climate change at which time the planet when from interglacial warm to glacial cold with 70% of the cooling occurring in less than a decade, at a time when insolation at 65N was at a maximum. The Younger Dryas abrupt cooling ‘event’ lasted for 1200 years. During the YD abrupt cooling event the North Atlantic ocean froze each winter to a latitude of Northern Spain and the UK had an average temperature of -3C. Abrupt climate change is caused by a massive cyclic forcing change which is caused by an interruption to the solar cycle and is caused by a massive change to the geomagnetic field that occurs when the solar cycle restarts. Remember the burn marks on the surface of the earth on different continents and at different latitudes, that correlate in time with Younger Dryas abrupt cooling event? There is the largest change in C14 in the geological record that correlates with the YD abrupt climate change and there is geomagnetic excursion that correlates with the YD abrupt climate change event.
http://www.sciencedaily.com/releases/2009/05/090513130942.htm

Cold Water Ocean Circulation Doesn’t Work As Expected
The familiar model of Atlantic ocean currents that shows a discrete “conveyor belt” of deep, cold water flowing southward from the Labrador Sea is probably all wet.
A 50-year-old model of ocean currents had shown this southbound subsurface flow of cold water forming a continuous loop with the familiar northbound flow of warm water on the surface, called the Gulf Stream.
“Everybody always thought this deep flow operated like a conveyor belt, but what we are saying is that concept doesn’t hold anymore,” said Duke oceanographer Susan Lozier. “So it’s going to be more difficult to measure these climate change signals in the deep ocean.”
But studies in the 1990s using submersible floats that followed underwater currents “showed little evidence of southbound export of Labrador sea water within the Deep Western Boundary Current (DWBC),” said the new Nature report.
Scientists challenged those earlier studies, however, in part because the floats had to return to the surface to report their positions and observations to satellite receivers. That meant the floats’ data could have been “biased by upper ocean currents when they periodically ascended,” the report added.
To address those criticisms, Lozier and Bower launched 76 special Range and Fixing of Sound floats into the current south of the Labrador Sea between 2003 and 2006. Those “RAFOS” floats could stay submerged at 700 or 1,500 meters depth and still communicate their data for a range of about 1,000 kilometers using a network of special low frequency and amplitude seismic signals.
But only 8 percent of the RAFOS floats’ followed the conveyor belt of the Deep Western Boundary Current, according to the Nature report. About 75 percent of them “escaped” that coast-hugging deep underwater pathway and instead drifted into the open ocean by the time they rounded the southern tail of the Grand Banks.
Eight percent “is a remarkably low number in light of the expectation that the DWBC is the dominant pathway for Labrador Sea Water,” the researchers wrote.

http://www.americanscientist.org/issues/pub/the-source-of-europes-mild-climate

The Source of Europe’s Mild Climate
The notion that the Gulf Stream is responsible for keeping Europe anomalously warm turns out to be a myth
If you grow up in England, as I did, a few items of unquestioned wisdom are passed down to you from the preceding generation. Along with stories of a plucky island race with a glorious past and the benefits of drinking unbelievable quantities of milky tea, you will be told that England is blessed with its pleasant climate courtesy of the Gulf Stream, that huge current of warm water that flows northeast across the Atlantic from its source in the Gulf of Mexico. That the Gulf Stream is responsible for Europe’s mild winters is widely known and accepted, but, as I will show, it is nothing more than the earth-science equivalent of an urban legend.
Recently, however, evidence has emerged that the Younger Dryas began long before the breach that allowed freshwater to flood the North Atlantic. What is more, the temperature changes induced by a shutdown in the conveyor are too small to explain what went on during the Younger Dryas. Some climatologists appeal to a large expansion in sea ice to explain the severe winter cooling. I agree that something of this sort probably happened, but it’s not at all clear to me how stopping the Atlantic conveyor could cause a sufficient redistribution of heat to bring on this vast a change.

http://www.atmos.washington.edu/~david/Gulf.pdf

Is the Gulf Stream responsible for Europe’s mild winters?
By R. SEAGER, D. S. BATTISTI, J. YIN, N. GORDON, N. NAIK, A. C. CLEMENT and M. A. CANE
It is widely believed by scientists and lay people alike that the transport of warm water north in the Gulf Stream and North Atlantic Drift, and its release to the atmosphere, is a major reason why western Europe’s winters are so much milder (as much as 15–20 degC) than those of eastern North America (Fig. 1). The idea appears to have been popularized by M. F. Maury in his book The physical geography of the sea and its meteorology (1855) which went through many printings in the United States and the British Isles and was translated into three languages.
meridional advection being an especially strong cooling over Asia. Since western Europe is indeed warmed by westerly advection off the Atlantic, we next assess how the surface fluxes over the Atlantic are maintained.
In conclusion, while OHT warms winters on both sides of the North Atlantic Ocean by a few degC, the much larger temperature difference across the ocean, and that between the maritime areas of north-western Europe and western North America, are explained by the interaction between the atmospheric circulation and seasonal storage and release of heat by the ocean. Stationary waves greatly strengthen the temperature
contrast across the North Atlantic and are themselves heavily influenced by the net effect of orography. In contrast, transport of heat by the ocean has a minor influence on the wintertime zonal asymmetries of temperature. Even in the zonal mean, OHT has a small effect compared to those of seasonal heat storage and release by the ocean and atmospheric heat transport. In retrospect these conclusions may seem obvious, but we are unaware of any published explanation of why winters in western Europe are mild
that does not invoke poleward heat transport by the ocean as an important influence that augments its maritime climate.
In summary, the east–west asymmetry of winter climates on the seaboards of the North Atlantic is created by north-westerly advection over eastern North America and by zonal advection into Europe. The Pacific Ocean has an analogous arrangement with ….

What seems to be missing from the conversation is why this circulation exists. The reason is that evaporation exceeds precipitation in the tropics and precipitation exceeds evaporation in polar regions. If the circulation did not refill the tropical oceans over time all of the Earth’s ocean water would collect at the poles. Gravity fixes this by pushing water down at the poles which pushes tropical oceans up from below.