Two waves of cold air will affect our country one after another. Why are the temperatures getting colder in winter?

I think the increasingly cold temperatures in winter are mainly caused by the influence of La Niña and El Niño phenomena, which cause abnormal global weather. If La Niña is encountered in our country, extreme and severe weather conditions will occur. For example, drought, high temperature, hurricane, heavy rain, extreme cold, hail, etc. Just like in 2016, there are similarities in the climate anomalies in many places in our country. La Niña and El Niño phenomena affect the climate in most cases and occur every few years, and what we encountered this year is one of them.

1. La Niña phenomenon

La Niña refers to the phenomenon of continued abnormal cooling of seawater surface temperatures in the eastern and central equatorial Pacific on a large scale. Usually accompanied by El Niño, also known as "anti-El Niño". The formation of La Niña will cause abnormal conditions in the earth's climate. It is a corrective transition phenomenon after an El Niño year. In most cases, La Niña occurs after an El Niño phenomenon, occurring every few years. This hydrological characteristic will cause the water temperature in the eastern Pacific to drop, leading to drought, while the water temperature in the west will rise, leading to more rainfall.

2. The impact of La Niña and El Niño on my country’s weather

The occurrence of La Niña and El Niño in summer affects some areas of my country with high temperatures and hot temperatures, sometimes droughts, little rain, and sometimes heavy rains. It causes constant floods and extreme cold conditions in winter. As we all know, in the first half of 2020, my country suffered from high temperatures, drought and little rain in May, June and July; in the second half of the year, heavy storms and rains, resulting in floods in August and September, were caused by the La Niña phenomenon, which caused tropical high pressure in the western Pacific and abnormal typhoons in the South China Sea. Caused by failure to form normally. Among them, Turpan City in Xinjiang has a record high temperature of about 49 degrees in summer. Chongqing City, Nanjing City, Wuhan City, Nanchang City, Changsha City, Hangzhou City and Baise City in Guangxi Province in the inland areas of my country have a temperature of 40 degrees Celsius. High temperatures around. In addition, the La Niña phenomenon has also caused severe droughts in some provinces in my country from north to south. For example, Yunnan, Liaoning, Shanxi, Sichuan, Inner Mongolia, Shaanxi and other provinces are experiencing serious drought conditions. The La Niña and El Niño phenomenon has made China's weather very abnormal, causing frequent rainfall in my country's Jiangnan, South China, and the Yangtze River Basin in the summer of 2020, and severe floods in Dongting Lake, Panyang Lake and other places. The water levels of some rivers have exceeded warning levels for a long time. Guangdong, Guangxi, Yunnan and other provinces and regions have experienced excessive rainfall, and floods have occurred in parts of North and Northeast China.

So I personally believe that the increasingly cold temperatures in winter are affected by the La Niña and El Niño phenomena!