NEEM supports Ewing and Donn
The new, published last year, NEEM ice core data does support Ewing and Donn Climate Theory.
The NEEM ice core data shows that very little snow fell between 108 and 15 thousand years ago. Enough snow fell between 150 and 130 thousand years to make it through the warmest time, 130 thousand years ago. In that same time, enough snow must have fallen on the continents and did make it through that warmest time and more fell until it got colder. The snowfall was over or greatly reduced by 108 thousand years ago. The snow did fall on the continents, more further north than the ice sheets expanded to. It was enough snowfall to start and maintain the ice sheets and drop the oceans. Most of the ocean drop of the last major ice age did occur between 108 and 150 thousand years ago. So much snow fell between 108 and 150 thousand years ago, that it easily made it through the summers. So much snow fell that it pushed down and spread southward. Once it got colder, at some point, it turned the snowfall off. The last of the spread occurred when it got the coldest, just before the warming. That was not the Ice Volume Max. The Ice Volume Max occurred many thousands of years earlier. Debris that is left when an ice sheet melts does not come from the location that the debris is found. It comes from higher elevations. You say some of the elevations were not that high. When you have miles thick ice sheets, you do have higher elevation. It did not need to get cold first. It had to get warm first. Warm water that is not covered with ice did provide the moisture for the snow. Lake effect snow comes from lakes that are warm enough to not be frozen over. Ocean effect snow comes from oceans are warm enough to not be frozen over. If you make it cold first, you freeze the water more and turn off the snowfall before it gets started. Most of the snow must fall while the oceans are still warm enough. The ice piles high enough that it must spread. The spreading makes it colder and gives the appearance that a lot more snow fell later. The ice sheets have been thawing for one hundred thousand years. The meltwater that is trapped in the ice does promote faster spreading and advance of the ice. Once it got colder, at some point, it turned the snowfall off. After the snowfall was turned off, more ice melted every year than was replaced by new snow.
Orbit influence occurred at the right times sometimes but at the wrong times sometimes to support consensus theory. Being wrong once proves it was not necessary. It is not the cold of the orbit cycles that promoted the snowfall. It was the warm of the orbit cycles that would have promoted the snowfall. Look at all the data that has ice accumulation and temperature presented and you will find that more ice accumulation occurs in warm times and less in cold times. We are talking about a lot more and a lot less.
We have data for Antarctic and Greenland. The same thing happened on the continents.
The most snow fell in the warm times when oceans were thawed.
Warmer means more snow. Colder means less snow. It did not get colder first. It did get warmer first.
I am looking forward to a report about the NEEM data which does go back 150 thousand years.
That ice got pushed around more and is harder to analyze. If ice fell on Greenland, 150 thousand years ago and it is still there, then ice fell on the continents during that same time and stayed there until the warming that occurred between 10 and 20 thousand years ago.
During the most recent ten thousand years, there has not been enough water in the oceans to create another major ice age. The oceans are higher, since Younger Dryas, and the warm water melts polar sea ice and turns on snowfall in time to prevent major warming and that prevents major cooling.
The difference between now and 150 thousand years ago is that then there was much more warm water in the Polar Regions available to produce snowfall.
The sun is not much different and the influence from orbit cycles are not much different. Snow fell more in the South and in the North during the same time periods. Not exactly, but in the long term it was the same. Orbit tilt cycles should have had ice ages in the north and south that were more out of phase. Higher and warmer oceans were in phase in the North and in the South and the North and the South Ice cycles were in Phase.