Approaching the Medieval Optimum, 212 to 1000 AD

摘要: Most of those who have written sometime this century about the historical impact climate change been geographers or climatologists: C.E.P. Brooks, Ellsworth Huntington, Hubert Lamb.... Historians tended thus far to be either blankly indifferent somewhat scornful. Some notable exceptions are found among community French historians associated with Annales, a journal founded in 1929 and committed forging links other subjects though especially geography. Fernand Braudel was doyen respect. Le Roy Ladurie, ‘by common consent most brilliant Braudel’s pupils’ (Burke, 1990:61) produced what may still widely cited all climate-and-history studies. In Times Feast, Famine, he stressed how complex is challenge assessing effect on crop yield secular changes mean air temperature that well not exceed degree Celsius. Also discerned disposition want things both ways question folk migrations, ‘The Teutons first millennium before Christ supposed left their countries origin because cold. The Scandinavians period AD 1000 done same thing for exactly opposite reason—the mildness climate, stimulating agriculture also population growth, said led departure surplus male warriors’ (Le 1972).