Term for a relatively long-lasting climatic phenomenon from 1450 to 1850 that occurred worldwide with regional and temporal focal points in Europe, North America, Russia and China. Prior to this, there had been a pronounced temperature high between 900 and 1350, mainly in Europe, which was referred to as the Medieval Warm Period. At that time, the wine-growing frontier was much further north along the southern Baltic coast. From 1450 onwards, the climate began to deteriorate again. Particularly cold periods stretched from 1570 to 1630 and from 1675 to 1715, accompanied by a worldwide expansion of the glaciers. The greatest expansion of the ice occurred around 1700, after which the glaciers slowly retreated again. This retreat is still continuing and many glaciers in the Alps have already melted completely.
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