What is the triple La Nina phenomenon? What influence does triple La Nina have on China?

Recently, many places in China issued an orange warning of cold wave. Many people think that it is related to the triple La Nina phenomenon, and there will be obvious cooling, strong winds, dust and large-scale rain and snow. What is the triple La Nina phenomenon? What influence does triple La Nina have on China?

What is the triple La Nina phenomenon?

The triple La Nina phenomenon refers to the process that La Nina events broke out for three consecutive years. Specifically, after the equatorial Middle East Pacific turned cold rapidly in the spring of 2020, it developed again from the summer of 2020 to the spring of 202 1 year, from the autumn of 202 1 year to the early summer of 2022, and from the autumn of 2022. Therefore, it is called the triple La Nina phenomenon.

The triple La Nina phenomenon is relatively rare, because it only occurs between 1973 and 1976, and between 1998 and 200 1, so it is relatively rare.

What influence does triple La Nina have on China?

Impact 1: There will be regional rainstorm in the north.

The appearance of triple La Nina will lead to regional rainstorm in northern China, which will affect the growth and harvest of crops.

Impact 2: There will be persistent drought in the southern region.

The appearance of triple La Nina will lead to persistent drought in southern China, and also affect the growth of crops, thus reducing crop yield. Therefore, after La Nina, the southern region should take measures in advance to deal with the drought.

Will triple La Nina make China colder in winter?

Triple La Ni? a may not necessarily make China's winter colder, because triple La Ni? a does not mean triple La Ni? a, but it means that it has been affected by La Ni? a events for three consecutive winters, so it does not mean that the climate impact will double, nor does it mean that it will be superimposed year after year. In the case of global warming, since 1986, there have been eight La Ni? a events in China, and the probability of cold winter and cold winter is half, so it is unscientific to judge whether it is cold winter or warm winter only from the perspective of La Ni? a events.

Usually, after La Nina event, the winter temperature in China will be lower than normal, and the precipitation weather is mainly characterized by less precipitation in a large area. Therefore, the appearance of triple La Nina does not mean that it is cold this winter.