202 1 how long will the cold wave last in the new year? Influence of La Nina Phenomenon on Temperature
The new year's cold wave is coming
In the late period of 65438+February this year, the influence of cold air was obviously enhanced. Around 26-28 and 30, two cold air will invade our country.
According to the latest medium-term forecast issued by the Central Meteorological Observatory, on the 27th, a strong cold air will move eastward and southward, affecting most parts of central and eastern China, and the temperature will drop by 6-8 grades, among which the cooling range in the eastern part of northwest China, North China, Huanghuai, Jianghan and Jiangnan will reach 10~ 12, accompanied by 4-6 grades and gusts of 7-8 grades. There is little to medium snow in the southeast of northwest China, southern North China and Huanghuai, rain turns to sleet in Jianghan, Jianghuai and northern Jiangnan, and there is light rain and moderate rain in south-central Jiangnan and southern China.
How long will the New Year's cold wave last?
At present, cold wave activity is a forecast of weather conditions, and the specific duration has not yet been determined. It should be observed according to the weather. During the New Year's Eve, everyone must take precautions when going out.
Influence of La Nina Phenomenon on Temperature
La Nina event refers to a cold water phenomenon in which the sea surface temperature in the central and eastern equatorial Pacific is extremely cold in a large range, and its intensity and duration reach certain conditions. Usually, in the winter when La Niñ a event occurs, the meridional circulation in the middle and high latitudes of Europe and Asia is large, which leads to the frequent influence of cold wave and cold air activities on China, and the temperature in the central and eastern regions is easy to be lower than normal. At the same time, the water vapor conditions from the South China Sea and the Western Pacific Ocean are generally deviated, and the annual precipitation tends to be less in most areas south of the Yangtze River in China.
Previously, at the Chamber of Commerce of the National Climate Trend Prediction Association held by the National Climate Center this winter and next spring (February 2020 -202 1), meteorologists predicted the climate trend this winter: it is expected that cold air activities will be frequent and intense this winter (February 2020 -202 1). Judging from the overall temperature trend in winter, except for the northeast, eastern North China and parts of Tibet, the temperature in most parts of central and eastern China is close to normal or low.
Earlier, Luo Jingjia, president of Nanjing University of Information Science & Technology Frontier Research Institute of Climate and Application, also said in an interview with Modern Express that under the background of global warming, the factors affecting winter climate are more complicated, not just La Nina events. We should pay close attention to climate change in specific areas. You can pay attention to the official climate forecast in time, and don't trust the information on the Internet. Experts also said that it is too early to judge whether it is a cold winter, and the temperature data needs to reach a certain standard.
: cooling skills
1. When your stomach is cold, it will shrink into a ball.
When you catch a cold, your stomach muscles and blood vessels will contract, causing stomach cramps, just like cramps. At this time, if you eat cold food or big fish and meat that are difficult to digest, it is easier to increase the burden on your stomach.
2. Suggestions for nourishing the stomach
You must keep your stomach warm in cold weather.
Wear less short clothes and be sure to protect your waist and abdomen; Eat some warm and digestible food, such as porridge, soup, stew and so on.
Eat regularly for three meals to keep the stomach in a regular gastric acid secretion cycle.
Although eating hot pot and mala Tang in winter can warm the body, it is not advisable to eat more, otherwise it will induce digestive tract ulcers.
My hands and feet are cold when I'm cold.
When the outside temperature is too low, more blood will flow to the center of the body, providing oxygen and nutrition for important organs, and peripheral parts such as fingers, toes and ears will feel cold because of reduced blood flow.
4. Suggestions on protecting human limbs
Wear earmuffs when going out, or cover your ears and nose with a wide hat scarf.
Cold can lead to muscle contraction, decreased blood supply and synovial secretion, and poor compliance of tissues around joints (including muscles and ligaments). ), so many people will feel sore muscles, stiff joints and aggravated joint pain.
6. Suggestions for joint maintenance
When the temperature drops suddenly, you must add clothes to keep warm in time and avoid being outdoors for a long time.
Mountaineering, climbing stairs and other sports will increase joint load and are not suitable for winter.
Be sure to warm up before exercise to prevent stiff limbs from being injured after strenuous exercise.
Pay attention to calcium supplementation, vitamins and protein in diet. And eat more milk, bean products, shrimp skin, kelp, walnuts and so on.
I have a runny nose when I have a cold.
When cold air enters the nasal cavity, the capillaries contract, the ciliary movement is weakened, and it is easy to clear nose or stuffy nose. This is a self-protection reflex that the nose is sensitive to cold air.