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Overall, rainfall and temperature showed a steady upward trend from 1901 to 2016. So in terms of rainfall and temperature increases, global warming does exist and is affecting the weather and climate. To separate, the precipitation is rising gradually in Britain, the temperature is stably rising. In Sudan have a high temperature with high precipitation relatively, in Russia, the temperature is lower than 0 celsius. The precipitation trend is rising. So global warming will have a small impact in this three countries.Because of the rapid development of industrialization since the 20th century, a large number of factories were opened, and the amount of carbon dioxide put into the air continued to increase. The increase of carbon dioxide produced the greenhouse effect, which increased the effect of absorbing long-wave radiation in the atmosphere, thus retaining the heat that should be reflected to the universe.
The effects of climate change are different depending on the region and climate, but they do exist. For example, in the UK, the effects are very small and basically unchanged. But in Sudan and Russia it was more pronounced than in Britain, with higher rainfall and temperature variations.