Younger Dryas Maximum (jan 1, 10900 BC – jan 1, 9700 BC)
Description:
Northern ice reaches it's Glacial Maximum. A sharply colder period in what was a general rise in temperature after the end of the last Ice Age. The downturn is thought to have started abruptly ~10900 BC, reaching a depth of cold ~ 10500 BC, when average temperatures are thought to have been: mid-winter, -16 to -20degC [ at least 15C below modern values - a truly dramatic fall ] and high-summer, 8 to 12degC, about 4C below modern values.Added to timeline:
Date:
jan 1, 10900 BC
jan 1, 9700 BC
~ 1200 years