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Orbital forcing from cycles in the Earth's orbit around the Sun has for the past 2,000 years caused a long-term northern hemisphere cooling trend, which continued through the Middle Ages and the Little Ice Age.
The Mini-Ice Age roughly spanned the era from 1200 to 1850, when countries in the Northern Hemisphere particularly experienced exceptionally cold winters. The River Thames often froze, from 1607 to 1814 there were frost fairs, and in the winter of 1780 New York Harbour froze, allowing people to walk from Manhattan to Staten Island.
So what caused the Little Ice Age? It was likely a combination of factors that included long periods of low sunspot activity (which reduced the amount of solar energy that reached Earth), the effects of explosive volcanic eruptions, and drastic changes in the North Atlantic Oscillation (the irregular fluctuation of atmospheric pressure over the ...
Little Ice Age (LIA), climate interval that occurred from the early 14th century through the mid-19th century, when mountain glaciers expanded at several locations, including the European Alps, New Zealand, Alaska, and the southern Andes, and mean annual temperatures across the Northern Hemisphere.
7 mar 2022 · Researchers have offered a range of explanations for the Little Ice Age, from volcanic eruptions to the European destruction of indigenous societies in the Americas, which caused forests to...
25 mar 2019 · There is evidence that the cooling may have been caused by a decrease in sunspot activity, and therefore in solar radiation, or by an increase in volcanic eruptions.
1 lut 2012 · The period is known as the Little Ice Age, and its cause has always been something of a mystery. However, new research by scientists at the University of Colorado-Boulder (yay team!) may have pegged it: the LIA appears to have started abruptly in the late 13th century, between the years 1275 and 1300.
