ML100 Lecture Notes - Lecture 9: John Clyn, Little Ice Age, Black Death
Document Summary
The danse macabre: the black death, the hundred years war, and the end of the medieval world. Not a crisis, but crises; many things going on that cause it to evolve. Drop in average temperatures by 1 degree avg. Change in growing season shrink by 3 weeks, extent of cultivated line drops 200m. Grote mandrenke (1365)- storm that wiped out a bunch of stuff. Periods of cooling and such existed but they had mild predictability so they moved long term, but could not adapt short term. Cause: thermos- hyaline circulation of the ocean, variation of the earth"s rotation, albino effect, and volcanic activity. Proxy data is the only way to study paleo-climate (endocrinology- trees and ice cores) Problem with written sources: we don"t compare it to average because we exaggerate- think. First known weather journal by william merle (1337-1342) including natural phenomena and comparisons overall- nothing in agricultural impact.
