Frankenstorm projectiles

[Findthepin1]

I heard that there's good evidence that one time we went from glacial to interglacial in three years. 

Edited December 9, 2015 by Findthepin1

[PB666]

Specifically, during the Younger dryas, a period(s) of cooler temperatures after the last glacial maximum, the temperature with west central europe could flip between temperaturs like at the last glacial maximum and then retyrn to temperatures more like before and after yd. One theory has is that an asteroid(s) that eath oast through a debris field several times over a 1000 year period, this theory was largely duscredited. Another theory is that a large glacial lake in north america busted through an ice dam resulting in the large scale addition of freash water tonthe north atlantic allowing large areas to freze over during winter, for example during the little ice age it was not uncommon for the sea to free between greenland and iceland. Large scale ice on the atlantic and later thawing would reflect more light keeping the northern hemispere cooler.  The situation of the earth in the younger dryas is not comparable to today, today the earth is more like at the climatic optimum, about 9000 years ago, except that aerosolic pollution is higher and water transfer from oceans to land via preciptation is somewhat less than it should.