202 1 the new year's cold wave is going to freeze. What's the lowest temperature in China?

The New Year's Eve event of 2020-202 1 must have been awaited for a long time, but according to the latest climate news, this year's New Year's Eve will usher in a super-strong New Year's Eve cold wave to freeze the whole country. By then, the temperature in 25 provincial capital cities will drop rapidly, reaching the lowest temperature in history. Everyone should be prepared for cold protection when playing ~

The National Central Meteorological Observatory predicts that there will be a strong cold air affecting the central and eastern regions of China from February 28 10 to 3 1. At that time, strong winds, rain and snow will appear one after another, and the eastern part of northwest China, North China, Huanghuai, Jianghan and Jiangnan will reach 10 ~ 12℃, accompanied by 4 ~ 6 grades.

Zhang Juan, a meteorologist from China Weather Network, said that the cold wave process has the characteristics of quick freezing and cooling, and it 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.

The temperature in 25 provincial capital cities has dropped rapidly, and most of the central and eastern regions will usher in the coldest New Year's Day in the past eight years.

Affected by the cold wave, most parts of the country will celebrate the New Year in sunny and cold weather this year, and most parts of the central and eastern regions will usher in the coldest New Year's Day in the past eight years. For example, the lowest temperature in Taiyuan on 3 1 day will reach -23℃, which is comparable to that in the northeast, and it is the coldest New Year's Day since 195 1. 3 1 day, the lowest temperature in Jinan will reach-12℃, which is the coldest since 1962. The minimum temperature in Hefei on 3 1 day will reach -7℃, which will be the coldest day since 2005.

The wind-cold effect is even colder, and most of them are as cold as "Sanjiu"

Cooling is accompanied by strong winds. It is estimated that there will be 4-5 winds in the west of Inner Mongolia and the east of Northwest China on February 28th, 65438. On the 29th, there will be 4-6 winds in Inner Mongolia, North China, Jianghan, Jianghuai and Jiangnan, and gusts in parts of Inner Mongolia and North China can reach 7-8. Although the cold wave process is not as strong as the overlord cold wave of 20 16, the wind-cold effect will aggravate the degree of somatosensory cold, so freeze the model appropriately. For example, the lowest somatosensory temperature in Yinchuan process is nearly -20℃, and the lowest somatosensory temperature in Beijing process is-15℃; In the south, the lowest somatosensory temperatures in Shanghai and Hangzhou are also close to -7℃, as cold as "Sanjiu".

In terms of rain and snow, due to the limited water vapor conditions, the intensity of rain and snow will not be too great. The probability of the first snow in South China this year is not great, and the boundary between rain and snow lingers in the north-central part of the south of the Yangtze River. 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.

Zhang Juan added the reason why the cold wave was so strong. In fact, from about 16, the numerical prediction model has already begun to show this process. In Siberia, cold air has been gathering and stored for a long time. Then the horizontal trough turned vertical, and the high-altitude trough led the powerful cold and high-pressure air mass to invade China, causing severe cooling.

The high or low temperature in a period of time belongs to the climate category, which is mainly the result of the interaction of atmosphere, ocean, land surface and ice and snow. If the sun heats the ocean to raise the temperature of seawater by 0.5℃, the warming and evaporation of seawater will affect the atmospheric circulation. For China, tropical sea surface temperature, Arctic sea ice and Eurasian snow are all important factors affecting winter climate.

Yuan Yuan, a researcher in the Climate Prediction Office of the National Climate Center, believes that the main reasons for the low temperature in many places since June+February, 5438 are the "four strong"-the strong meridional circulation in the middle and high latitudes of Europe and Asia, the strong ridge of the Ural Mountains, the wide trough of the Balkhash-Baikal low pressure, and the Siberian high with strong sea level pressure field, which make the cold air generally move from the northwest. From the big climate background, the development of La Nina and the abnormal lack of Arctic sea ice are two main external forcing factors.

La Nina phenomenon refers to the phenomenon that the sea surface temperature in the equator, the Middle East and the Pacific Ocean continues to be abnormally cold. "In the winter of most La Nina years, the longitude of the mid-high latitude circulation in Europe and Asia is relatively large, and the cold air activity is also relatively strong. The temperature in most parts of the central and eastern regions is easy to be low. " Yuan Yuan said.

This autumn, Arctic sea ice is extremely rare. In September, the Arctic sea ice was the second least in history, and 10 and10/0 were also the second least in history. "Less sea ice is also conducive to the strong ridge of the Urals in winter, and the winter wind in East Asia is strong. The temperature in most parts of the central and eastern regions is easily lower than normal. " However, Yuan Yuan also pointed out that under the background of global warming, the factors affecting the winter climate anomalies in China are more complicated. Specifically, a cold stage or a strong cooling process is mainly the direct result of atmospheric circulation anomaly, and it is difficult to say which factor or factors caused it.

At present, La Nina is still in a state of development, and the National Climate Center predicts that it may reach its peak at the end of this month, and its intensity may be moderate. There is little sea ice in the Arctic, which is not easy to change. Therefore, in the near future, the overall cold state of temperature in China will continue.

In short, at the beginning of next week, all parts of the country will spend the coldest period since this winter. It's time to bring out your ultimate cold-proof equipment for this winter. Down jacket is the minimum respect for the cold wave, and hats, scarves and gloves are indispensable.

Tips 1。 When the heart is cold and prone to ischemia, in order to supply energy to the body, the heartbeat will be accelerated, and the oxygen consumption and workload of the heart will also increase. At low temperature, the blood is thicker and the flow rate is slower, which further increases the burden on the heart.

Patients with cardiovascular diseases suffer from cold stimulation, coronary artery contraction spasm and high blood pressure, which may lead to acute myocardial ischemia, angina pectoris and even myocardial infarction.

2, warm "heart" suggests raising the temperature of the bathroom before bathing to avoid cold stimulation; Soak your feet with hot water before going to bed to promote blood circulation.

Drink more water, eat more fruits and vegetables, eat less big fish and meat, reduce blood viscosity and avoid thrombosis.

Pay attention to the details of life, get up slowly, get up slowly.

Pay attention to the warning signal of "cold" in your heart. If you have chest pain, palpitation, black eyes, chest tightness and other symptoms, you should seek medical advice promptly.

3, when the lungs are cold, it is easy to cough, walk against the cold wind, sometimes you can't breathe, cough, nausea, vomiting. This is because cold and dry air will dry the nose, stimulate the throat, contract the small trachea and produce respiratory stress reaction.

4, lung protection It is recommended to protect the oropharynx when going out in winter, try to breathe with your nose to avoid the invasion of cold air.

Pay attention to drink plenty of water during the day, drink 1200~ 1600 ml every day, and eat more lung-moistening foods such as pears, tremella and lilies.

Living in the northern region, if you have a humidifier at home, you can use it after cleaning and keep the air humidity at 45%~60%.