What is the main reason for the bad weather caused by the lowest temperature in winter in Huzhong, Heilongjiang Province?

Recently affected by strong cold air, the coldest town in China? The temperature in Huzhong District, Daxinganling, Heilongjiang Province has been dropping continuously, falling below -40℃ for six consecutive days. At 7: 54 on the 6th, the meteorological bureau of Huzhong District measured the lowest temperature of -45.9℃ at the meteorological station of Baishan Scenic Area in Huzhong, which was the lowest temperature since last winter. The extremely cold weather enveloped the Huzhong area of Daxing 'anling in the morning in the ice fog, and the visibility was less than 50 meters. Some buildings were looming in the foggy sea.

According to the comprehensive meteorological observer of the Meteorological Bureau of Huzhong District, on the morning of the 6th, the lowest temperature measured by the meteorological monitoring station of Baishan Scenic Area in Huzhong District reached -45.9℃, setting a new record for the lowest temperature in Heilongjiang Province since the winter of 2020. At the same time, this is also the third round of extremely cold weather in Huzhong District, where the temperature has exceeded minus 40℃ since winter. It is understood that the shortest frost-free period in Huzhong District is only 4 1 day, the lowest historical temperature in cities and towns is -53.2℃, the average annual temperature is -3.6℃, and the weather at MINUS 40℃ lasts for more than 40 days in a year. The coldest town in China? Known as.

Huzhong District is located on the northern slope of Ilhuli Mountain in Daxing 'anling. The frost-free period is only 83 days. The historical lowest temperature in this town is -53.2℃, and the annual average temperature is -4.3℃. The weather at -40℃ can last for about 30 days every year. The coldest town in China? Known as. In recent years, Huzhong District has put? Cold? This unique resource has been transformed into an advantage for development. By promoting the good local forest scenery and ice and snow resources, a large number of photographers and tourists are attracted to enjoy the ice and snow and experience the extremely cold weather. Pour water into ice? .

Extreme cold weather, that is, in the cold degree scale table formulated by meteorological specialty, there is a low-to-high grade between MINUS 40 degrees and 9.9 degrees, which is called extreme cold weather, and extreme cold weather usually represents MINUS 40 degrees. What is the cause of extreme cold weather?

Extremely cold weather is due to the development of La Nina time similar to that of East Taiping, which leads to the low temperature in most of winter in China. At the same time, the sea surface temperature in the North Pacific continues to be warmer, and the Siberian high continues to increase, resulting in a great difference in heat between the sea surface and the land, while the winter gale in East Asia brings cold air.

Extreme cold weather, especially in the middle and late June of 65438+ 10, on the eve of the Spring Festival, due to the obvious change of atmospheric circulation, polar cold air will spread southward, and northern cold air will affect China southward. When they are stable, there will be more rainy days in the south and more rain, snow and freezing weather in winter.

Arctic oscillation refers to the pressure change in the Arctic. The control of high altitude and low pressure will make the cold air in the Arctic shrink, and the corresponding temperature in mid-latitude will be higher. When the high altitude in the Arctic is controlled by high pressure, the cold air in the polar region will also erupt southward, and there will also be strong cold wave weather.

Heilongjiang province is located in low latitude and belongs to the geographical climate of cold temperate zone. The climate in the north is dry.