Why the weather is getting colder and colder.

The climate is getting warmer, why is it getting colder?

65438+1 October 31951maximum snowfall in June1covers the whole capital. This snowfall has created four records in the history of our city: the longest duration, the widest coverage, the largest precipitation and the thickest snow layer. The biggest snowfall since this winter has made people feel the powerful power of climate change.

From 165438+2009 10, a series of phenomena "running counter to global warming" occurred one after another, from the early winter in many countries in the northern hemisphere to the snowstorm that swept across many countries in the United States and Europe, and then to the rare heavy snowfall in Beijing, Tianjin and Hebei recently. People can't help but ask: Why isn't there a "warm winter" when global warming is obvious?

Sun Jun, chief forecaster of the Central Meteorological Observatory, believes that the most significant manifestation of global warming is the frequent occurrence of extreme weather and climate events, including high-temperature heat waves with extremely high temperatures and cold wave blizzards with extremely low temperatures. The general trend of climate change is global warming and high temperature, but the weather changes will fluctuate and will not develop smoothly. In a certain period of time, there will be extremely cold weather.

The discomfort caused by snowstorm is related to warming.

Ren Fumin, a senior engineer at the National Climate Center, said that global warming is not just a scientist's prediction, but an indisputable cruel reality. He believes that from the existing scientific research, it is a recognized conclusion that global warming leads to frequent extreme weather and climate events. However, a single snowstorm event is not suitable for direct connection with climate warming.

Climate change will lead to frequent extreme weather and climate events. In Ren Fumin's understanding, there are two meanings: on the one hand, climate warming will lead to a large amount of evaporation of seawater, and the increase of water vapor in the atmosphere will easily lead to an increase in extreme events. On the other hand, as far as temperature is concerned, global warming means that the global average temperature will rise and the range of temperature change is also increasing. In other words, the probability of extreme cold events and extreme warm events will also increase.

Film Interpretation of Extreme Climate Events

Climate warming, polar ice and snow melting, and cold water flowing into the ocean have changed the balance of "temperature-salt cycle", leading to global cooling and entering the ice age ... The scene described in the sci-fi movie The Day After Tomorrow is still in sight. From The Day After Tomorrow to 20 12, disaster movie's "prophetic" interpretation makes more and more people worry that the global climate will continue to deteriorate.

"The current global climate is characterized by warming. After warming, it has a great impact on our production and life. " As for whether there will be extreme events in disaster films, Zhang Peiqun, director of the Climate Prediction Office of the National Climate Center, believes that it is not easy to say now, and this is only a deduction in film and television.

After global warming, it often brings adverse effects, but it also has some beneficial effects. For example, after global warming, the scope of grain cultivation moves northward, which is also beneficial to grain production. Therefore, Zhang Peiqun believes that good and bad should be seen together.

"These disaster films often emphasize the extremes in some laws, such as greenhouse gas emissions or a series of consequences caused by extreme pollution. They will attract more attention and have a warning effect. " Zhang Peiqun said.