The Winter Spring Snow Thaw Essay

1727 WordsDec 12, 20167 Pages
Do some people feel that summer come faster and faster and winter is shorter and shorter? Do some people feel that summer is not hot and winter is not cold as before? In the 21 century, the global average temperature has raised by 0.74 degree. Northern Hemisphere spring snow thaw is earlier than 150 years age about 9 days, and autumn frosts starting time is about 10 days later. Scientists found that the speed of climate change is becoming more quickly in the past 10 years. The reason of that is mostly because the raised of human activities. People in all over the world started the factories by the past century more than the whole human history, the effects of this movement become to show off in the past ten years, the most impact effect is the temperatures improve, such changing of the temperature causes the rising of the sea levels and increase the weather became hotter than before, the cranky psychological produced by people will affect their work and learning. It also leads the expansion of tropical disease epidemic. In short, global warming may bring infinity of negative influence. And global warming is the production of the greenhouse effect. The greenhouse effect is one of the important issues to make global warming become worse. The greenhouse effect is the process by which radiation from a planet 's atmosphere warms the planet 's surface to a temperature above what it would be in the absence of its atmosphere. Carbon dioxide is the largest number of
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