Climate Change Essays

Climate Change Essays-90
Prior to the 1990s, scientists largely believed that the shifts in climate between ice ages and warmer periods occurred over centuries and millennia due to the large amount of time necessary to build up or melt an ice sheet over a kilometer in thickness.Geologic evidence from the last decades, however, shows that there have also been rather abrupt periods of climate change spanning anywhere from years to decades.

Prior to the 1990s, scientists largely believed that the shifts in climate between ice ages and warmer periods occurred over centuries and millennia due to the large amount of time necessary to build up or melt an ice sheet over a kilometer in thickness.Geologic evidence from the last decades, however, shows that there have also been rather abrupt periods of climate change spanning anywhere from years to decades.

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Climate Change Essays

The precipitation changes are expected to vary from region to region, with increases over the northern mid to high latitudes and in Antarctica during the winter.

The difference between today global temperature and the average global temperature of the last ice age is only about 5t.

However, over the last century we have witnessed a decrease of nearly 10 percentage snow cover and a 10-15 percentage decrease in spring and summer sea-ice in the northern hemisphere] Other observed changes that have been linked to climate include longer growing seasons, increases in rainfall and rainfall intensity in the northern hemisphere, and shifts in when ice freezes and breaks up on rivers and lakes.

The intensity of extreme weather events is also likely to increase, with greater extremes of both flooding and drought.

Despite all of the information and evidence that scientists have uncovered related to changes in climate, there continues to be uncertainty around the causes of climate change and its potential impacts.

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