Drought in western China

Reasons for the drought in the west: According to the research results in Europe and North America, the rainfall in many big cities is about 5 ~ 10% more than that in the suburbs, and the number of precipitation days less than 5 mm increases by 10%. Because the temperature in the city is relatively low.

High snowfall is 5 ~ 10% less than that in suburbs.

This is worthy of attention. Experts are concerned about the wind speed and what heat. I will pay attention to the influence of the upward rate on the weather in the future, and the forest will also increase the upward rate, but the grassland will not.

When you look up at the Burj Dubai, you will pay special attention to what kind of weather changes Dubai will bring.

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On February 22 this year, the British "Observer" disclosed a "secret report" from the Pentagon to the Bush administration. The report also described the climate situation in China as follows: "A severe drought will occur in southern China around 20 10, lasting for 10 years. At present, the precipitation distribution pattern of' waterlogging in the south and drought in the north' in China may become the precipitation distribution pattern of' waterlogging in the north and drought in the south' ... "

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This is unfounded and can only be correct. It should be that there is popularity and a lot of rain, or there is a big event and a lot of rain. The following information is great, which is what I want to see.

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According to media reports, researchers from the National Climate Center of China Meteorological Bureau drew the distribution map of summer precipitation in China from195/kloc-0 to 2000, and found the following laws: 195 1 to 1960, the summer precipitation in China was mainly concentrated in the northeast and north China; From 196 1 to 1970, the summer precipitation in China is mainly concentrated in North China, and the northeast begins to decrease. 197 1 to 1980, the summer precipitation concentration area in China continues to move southward, and the northern part begins to decrease; From 198 1 to 1990, the summer precipitation in China is concentrated in the Jianghuai basin. 199 1 By 2000, the summer precipitation in China was mainly concentrated in the south of the Yangtze River, forming the current distribution pattern of "waterlogging in the south and drought in the north". "It can be seen that the areas where precipitation is concentrated in China change regularly, with a cycle of about 20 years. In the future 10, the rainy area may return to the north, which means that the situation of' drought in the south and flood in the north' may be formed around 20 10. "