Crossing the cold wave will quickly freeze the whole country! Does the cold wave have an impact on the prevention and control of epidemic situation in COVID-19?

Some time ago, due to the influence of cold air, many provinces and cities in the south experienced power shortage problems.

Today, the influence of the last cold air in China has come to an end, and most parts of China have begun to heat up again.

However, according to the latest meteorological data monitoring, this fine weather will not last long.

Some time ago, due to the influence of cold air, many provinces and cities in the south experienced power shortage problems.

Today, the influence of the last cold air in China has come to an end, and most parts of China have begun to heat up again.

However, according to the latest meteorological data monitoring, this fine weather will not last long.

According to the forecast of the Central Meteorological Observatory, a cold wave will affect the central and eastern regions of China on the 28th, bringing strong winds, strong cooling and rainy and snowy weather, with the coldest weather in most areas since winter.

Image source China Weather Network

The new year's cold wave will quickly freeze the whole country.

According to experts, the cold wave process has the characteristics of quick freezing and cooling, rain and snow mixing, which will "freeze through" 80% of the country and the temperature in 25 provincial-level cities will hit a new low this winter.

The most intense cooling period is 12 from February 29th to 30th. For example, the lowest temperature in Changchun and Harbin is only about -26℃, which is extremely cold. The lowest temperature in North China such as Beijing, Shijiazhuang and Tianjin may drop to around-12℃ next week.

And the cooling is accompanied by strong winds. It is estimated that there will be 4-5 winds in western Inner Mongolia and eastern Northwest China on February 28th, 65438, and 4-6 winds will appear in Inner Mongolia, North China, Jianghan, Jianghuai, Jiangnan and other places on the 29th. In terms of rain and snow, due to the limited water vapor conditions, the intensity of rain and snow will not be too great.

It is estimated that there will be small to medium snow in the southeastern part of the northwest, southern North China and Huanghuai, rain to sleet in Jianghan, Jianghuai and northern Jiangnan, light rain in south-central Jiangnan and southern China, and local rain.

Where did this cold wave come from?

As in previous years, the cold wave comes from Siberia, and I believe our people are very familiar with the word "Siberia".

After deep digging, it is not difficult to find that the formation of cold waves usually has these characteristics:

1, the strongest cold air

Cold wave is a kind of cold air.

There are five grades of cold air, weak cold air, medium-intensity cold air, strong cold air and strong cold air.

The strongest cold air is the cold wave.

2. High latitudes move to middle and low latitudes.

Siberia belongs to high latitudes, and China belongs to middle and low latitudes.

3. Strengthen the invasion under specific weather conditions.

A large amount of cold air has accumulated over the far north, forming a powerful cold high-pressure air mass. When the cold high-pressure air mass meets the appropriate atmospheric circulation situation, it will go all the way south and form a cold wave.

Does the cold wave have an impact on the prevention and control of epidemic situation in COVID-19?

Low temperature environment is more conducive to the survival and spread of the virus.

To be sure, frequent cold air activities and large temperature fluctuations in winter have brought many adverse effects on epidemic prevention and control in COVID-19.

In addition, the cold season is the season of high incidence of respiratory viral diseases, especially influenza virus, and it is necessary to strengthen prevention and control, so personal preventive measures should not be relaxed in winter.

Generally speaking, the cold wave is coming, and people in all regions should actively take preventive measures.

During the peak travel period on New Year's Day, personal protection should be actively done to ensure that the risk of new coronary pneumonia infection is minimized.