Is it cold or warm this winter?

The winter temperature in 2023 is close to the previous year's level, neither too cold nor too warm.

Since June, 5438+February, 2032, the temperature in many places in China has been greatly reversed. On February 29th, 65438, Jia Xiaolong, deputy director of the National Climate Center, responded at a press conference held by the China Meteorological Bureau. He said that since 65438+February, as of the 28th, the national average temperature was -2.8℃, close to the same period last year.

According to reports, there were three cold air processes affecting China from June 5438 to February 2023. Among them, 65438+ February 2 to 13 is the warmest in the same period in history; Extreme cold weather occurred from June 4 to 24, 65438, and its comprehensive intensity was the strongest since June+February, 65438. The reason is that Jia Xiaolong said that the strongest cold wave weather process in June+February in 5438 was mainly due to the meridional characteristics of the circulation in middle and high latitudes in Europe and Asia.

The northwest airflow in front of Wushan high-pressure ridge leads Siberian cold air to move eastward and southward, and encounters extremely high pressure in the northwest Pacific Ocean, forming a long-term confrontation. The main body of cold air controls the central and eastern parts of China and goes deep into South China. During this period, China experienced a national strong cold air and a national cold wave, and the temperature in most parts of the central and eastern regions was significantly lower than that in the same period of normal years.

Jia Xiaolong introduced that by the end of 65438+the beginning of February, the longitude of the circulation in the middle and high latitudes in Europe and Asia weakened, and the ridge of high pressure gradually controlled China, and the cold air affecting China weakened obviously, and the temperature in most areas began to rise.

According to the forecast of the Central Meteorological Observatory, cold air will still be active in stages in June 5438+ 10, 2024. It is expected that most parts of the country will be mainly sunny to cloudy during the New Year's Day. On the 30th, there was light to medium snow in northern Xinjiang, northern North China and northeast China, and heavy snow in Liaoning. During the New Year's Day, there will be a cold air process in the central and eastern regions of China, and the temperature in most areas will drop by 4-6℃, and some areas in the northeast will drop by more than 8℃.

Main hazards of cold wave

Cold wave is a large-scale weather process, which will cause a wide range of severe cooling, strong winds and snowfall along the way. Disasters such as gale, frost, snowstorm and sleet caused by cold wave have great influence on agriculture, transportation, electricity, shipping and people's health. Cold wave and strong cold air usually bring strong winds and cool weather, which is the main disastrous weather in winter in China. Cold waves and strong winds pose a great threat to coastal areas.

The freezing rain, snow and ice weather brought by the cold wave is extremely harmful to transportation. The moving speed of the cold wave is tens of thousands of meters per hour, which is similar to the speed of the train. There are three routes that affect the cold wave in China: one is the west road. This is the earliest and most frequent route affecting China. Strong cold air starts from the North Pole, goes south through western Siberia, enters China and Xinjiang, and then invades North China, Central Plains, South China and even Southwest China along the Hexi Corridor.

The second is the middle road. Strong cold air flows from Siberia and Lake Baikal in Mongolia, passes through Inner Mongolia Autonomous Region of China, enters North China, and reaches the southeast coastal areas. The third road is East Road. Cold air flows south from northeast Siberia, sometimes through northeast China, sometimes through the Sea of Japan and the Korean Peninsula, and invades the eastern coast of China. The main force of the cold wave going south from this route is eastward, which is generally not very strong and the frequency will not be too much.

Baidu encyclopedia-cold wave