If you have not read it already, by all means get the book Sunken Civ has frequently recommended: “The Cycle of Cosmic Catastrophes (Flood, Fire, and Famine in the History of Civilization)” by Firestone et al. It’s main focus is about what stopped the warming from the Ice Age about 13,000 ya. A lot of scientific data there.
Two versions:
The Cycle of Cosmic Catastrophes: How a Stone-Age Comet Changed the Course of World Culture - $9 (2006)
The Cycle of Cosmic Catastrophes: How a Stone-Age Comet Changed the Course of World Culture - $16.50 (2006)