Rare "triple" Lamina appeared, will it be destined to be colder this winter?

According to the British "Nature" magazine recently published, meteorologists have predicted Lanna for the third consecutive year, that is, a rare "triple" La Nina climate event may occur, which will also be a historic scene. So, does this mean that after the hottest summer in history, the winter of 2022 is destined to be a "extreme"?

Source Visual China

Why is "Rana" delayed?

In the past 20 years, the global warming caused by greenhouse effects, in fact, it was originally "El Nino phenomenon", but because of abnormal climate, since 2020, "La Nina" has been delayed after the appearance of "La Nina" unwilling to leave after leaving. Essence For the autumn and winter 2022, we may also usher in the third consecutive La Nina phenomenon.

Luo Jingjia, a national special professor at Nanjing Information Engineering University and chief scientist at the National Key R & D Plan Project, told reporters that the so-called "triple" Lamina has only happened twice in the past 40 years of observation. Over the year. "

La Nina and El Nino are two brothers and sisters of different personalities, and La Nina has always corresponded to "cold". The National Oceanic and Atmospheric Administration (Noaa) defines La Nina as: "The periodic cooling of the central and central ocean surface temperature in central equatorial Pacific. Generally, the La Nina incident occurs every three to five years, but sometimes it may occur for several consecutive years in a row consecutive years. ","

"This time for three consecutive years, La Nina, we are also confused about the mechanism it appears." Luo Jingjia told reporters that La Nina phenomenon is a climatic phenomenon caused by a very complicated sea gas interaction, but its impact on global weather -climate -climate However, it is recognized that the water temperature in the equator Pacific has caused abnormal changes. In the context of global warming, the tropical Indian Ocean, the Atlantic and the Western Pacific heating faster, the three major ocean sea temperature agles and long -term heating trends are uniform, and through the impact of the sea basin, it is conducive to the continuous occurrence of La Nina phenomenon.

"How hot in summer, how cold it is in winter"?

According to meteorological observations, in 2022, it has been determined to be the strongest high temperature process since the meteorological record. It has a long duration, wide range, strong strength, and extremes. The common people often say "how hot in summer and how cold it is in winter". Once the phenomenon of La Na is developed, it may indeed cause a large fluctuation of the atmospheric circulation again. Does this mean that this winter will be cold?

Luo Jingjia told reporters that La Na may cause the increase in weather phenomena such as this winter. Therefore, the number of times and strengths that may occur in the winter of this winter must pay special attention. "In the winter of the general year, a cold wave process may end in a few days, and it will quickly pick up later. But the year of La Nina, the circulating background is conducive to the increase in the frequency of the cold wave, and the space for retreating is small. The average temperature in winter is low. "

The reporter learned that in the winter of 2021 to 2022, the temperature in my country generally showed a trend of heat and then cold, especially in February, which directly lowered the average of the entire winter. The appearance.

According to the analysis of the National Climate Center, there are two main influences of Lamina's climate in my country: First, the autumn of La Nina, the northern precipitation is more likely to have more, and the possibility of autumn floods is high, such as La Nina, which occurred in 1974, 1984, and 2000 The incident caused a lot of precipitation in the Yellow River and the Huaihe River Basin in the fall of that year. For example, the La Nina incident that occurred in 2000 caused the temperature in the Northeast and North China in the winter of 2000/2001, and the rare severe cold occurred in some areas; from 2007 to 2008, the La Na incident caused a large -scale low temperature rain and snow frozen disaster in the southern my country in early 2008. Essence

Yangtze Evening News/Zi Niu Journalist Yu Dandan

Edit: Qin Xiaoyi

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