Can you tell us the source of your charts. I only see one identifier, the one for GISP 2, Greenland.
We may or may not have an ice age any time soon. The Younger Dryas which actually occurred when we seemed to be in the warming phase after the last ice age was likely caused by a major boloid event in the Northern Hemisphere. It is easy to see the signficant downturn after the eruption of Toba which left crater 18 by 65 miles. There was a drop after 22,000 years ago, when Sakara-Jima (Japan) blew and left the 15 mile diameter crater. Thus I think the most likely cause of another ice age will either be a super volcano or a very major extraterrestrial impact event. Unfortunately, those are somewhat hard to predict, except to say that at some point they will happen and kill millions if not billions of people.
“Can you tell us the source of your charts. I only see one identifier, the one for GISP 2, Greenland.”
I think I found most of those at www.iceagenow.info or www.wattsupwiththat.com.
“Unfortunately, those are somewhat hard to predict, except to say that at some point they will happen and kill millions if not billions of people.”
But ice ages do happen about every 100,000 years.
“The Younger Dryas which actually occurred when we seemed to be in the warming phase after the last ice age was likely caused by a major boloid event in the Northern Hemisphere.”
Furthering the same theory: the shock and heating of the ice sheet caused a huge chunk of ice over 1K thick and about the size of Greenland to slide off the ice sheet into the North Atlantic, blocking the Gulf Stream.
Observe the incremental downward trend of temperature in successive cooling periods; also, note that the duration of each warm period above the 57 degree F “normal” axis is shorter. I note the article mentioned 1500 years and suggest everyone to Google “next bond event”.