Why is there a cold wave in global warming?

? In fact, it is global warming that causes the frequency and intensity of extreme weather events such as cold wave to increase in recent years. The energy of the global atmosphere is conserved. Climate warming keeps a certain area extremely hot, and the temperature around it will drop, resulting in extreme weather such as high temperature heat wave, drought, flood, typhoon and cold wave.

First of all, why is there a cold wave because of global warming?

? 1. First of all, analyze the reasons for its temperature rise.

? The main basic reason is the aggravation of the greenhouse effect (the increase of carbon dioxide) caused by the massive emission of greenhouse gases. A large amount of carbon dioxide in the atmosphere warms the earth, makes the carbon cycle unbalanced and destroys the ecological environment.

2. What global warming phenomena can be analyzed?

1. The climate will get warmer, glaciers will melt and the sea level will rise.

2. With the increase of seawater area, more water evaporates, rainfall becomes more frequent, and the degree and severity of natural disasters increase.

3. It is considered that global warming is not only manifested in the increase of average temperature, but also in the range of weather changes.

1. For example, the hot is hotter, the cold is colder, the gap between the two poles increases sharply, and the thermal difference changes even more.

2. On average, it is a warmer feature with obvious regional characteristics.

In the case of global warming, the number of strong cooling events is increasing, so the strong cooling process of this cold wave is not contradictory to the trend of global warming.

? At the same time, La Nina caused by global warming makes the low-latitude seawater cool, especially in the central and eastern Pacific Ocean, where large areas of low-temperature seawater often appear. As a result, the temperature gradient at high and low latitudes in the northern hemisphere of the earth is reduced, the original equilibrium state of the climate system is broken, and the cold air mass at high latitudes is unconstrained. Then, under the higher pressure difference, it quickly advances to the low latitude in the form of a cold wave.

Under normal circumstances, the cold air in the polar region will be controlled by the westerlies of the earth and be enclosed in the area near the North Pole. Although it is often pushed to low latitudes, the westerlies are more controlled. Like sheepfolds, cold air is "sheep". In general, cold air is a flock of sheep, and the metropolis is surrounded by the westerly belt of the Arctic.

However, under the combined action of global warming and polar amplification effect, the temperature in the Arctic increases, the temperature gradient in the middle and high latitudes decreases, and the westerly belt over Eurasia weakens, resulting in the westerly belt as a "sheepfold" is no longer as strong as before, and the cold air previously closed in the polar regions is more likely to break through the westerly belt and leak downward to the south. .

Therefore, experts pointed out that global warming and the cold wave are not contradictory. On the contrary, in the context of global warming, more extreme cold wave weather is more likely to occur. In addition, global warming will not lead to warm winters everywhere. For example, in some parts of the northern hemisphere, global warming actually makes winter colder.