Is 2020 the hottest year? Influence of La Nina Phenomenon on Climate in China

At the end of 2020, the data of the World Meteorological Organization showed that the end of 2020 marked the end of the hottest decade on record, and this year may still be the hottest year. So is this the hottest year? Let's take a look at the latest news.

2020 may be one of the hottest years on record.

According to the World Meteorological Organization, although La Nina phenomenon has a cooling effect on the global climate as a whole, it will still be extremely hot in 2020, which will affect the weather patterns in many parts of the world. Most models show that the intensity of La Nina phenomenon is expected to peak at 65438+ in February or165438+ in October next year.

Talas, Secretary General of the World Meteorological Organization, said that record-breaking high temperature years usually occur during El Ni? o events such as 20 16. We are now experiencing La Nina phenomenon, which has a cooling effect on the global temperature, but it is not enough to prevent the temperature from rising this year. The high temperature this year is close to the record level of 20 16.

Based on the five global temperature databases, the World Meteorological Organization will release the comprehensive temperature data for 2020 in June+10/October next year. This information will be included in the final report "Global Climate 2020" released in March next year, including climate impact. According to the Mid-term Report on Global Climate in 2020 released by the World Meteorological Organization in early February of 65438, the data of the first month of this year 10 all set 2020 as the year with the second highest temperature so far, second only to 20 16 and higher than 20 19.

The World Meteorological Organization also said that the long-term trend is more important than the annual temperature ranking. Since the 1980s, every decade has been warmer than the last one. This trend is likely to continue as greenhouse gas emissions in the atmosphere reach record levels. In particular, carbon dioxide will exist in the atmosphere for decades, leading to global warming in the future.

Influence of La Nina Phenomenon on Climate in China

At the end of 10, the World Meteorological Organization issued a new edition of Global Seasonal Climate Update, pointing out that La Nina phenomenon has taken shape. It is predicted that the intensity of La Nina will be moderate to strong this year and will continue until next year, affecting the temperature, precipitation and storm patterns in many parts of the world.

Not long ago, Jia Xiaolong, former deputy director of the Meteorological Bureau, said that this year, the impact of cold air in China was more frequent and stronger. There may be a wide range of low temperature rain and snow climate in the north. This winter, the temperature in the north is generally cold, the precipitation shows a situation of "more in the north and less in the south", and the climate change is relatively strong.

Jia Xiaolong said that at present, the National Climate Center is closely monitoring the index of key sea areas. Once the value falls below -0.5 for more than 5 consecutive months, it is defined as La Nina event.

What needs special attention is that the cold air activity will become stronger in the middle of winter (202 1 and 1), and the temperature in the central and eastern regions will be much lower than that in the same period last year, especially in many parts of South China, Southeast China and Northwest China. The temperature will drop obviously, and everyone will feel particularly cold.

There may be a large-scale cooling rain and snow climate in the north, and it is unlikely that there will be persistent freezing rain and snow weather in the south. Staged low-temperature freezing climate may occur in Jiangnan and Southwest China. Generally speaking, the temperature is much lower than that at the beginning of 19.

North China should be prepared for snowstorms and low temperatures. This winter, there may be staged strong cooling and heavy snowfall in northern Xinjiang, western and northeastern Inner Mongolia, central and eastern northwest China, and central and northern northeast China. We should do a good job in snow disaster and low temperature defense.

Prevent the adverse effects of staged low temperature, rain, snow and freezing weather in the south. There may be staged low-temperature freezing rain and snow weather in the eastern part of southwest China and the western part of Jiangnan this winter, so it is necessary to do a good job of its adverse effects on transportation, electric power and agricultural spring ploughing.