China News Service, Beijing, November 8th (Wei Xianghui) With the arrival of the beginning of winter solar terms, all parts of the country have begun to accelerate the process of entering winter.

At the same time, the impact of the "triple" La Niña event on the climate this winter has attracted much attention.

At present, cold air is continuing to affect northern cities, and many places have put heating work on the agenda.

"Shenzhou Arctic" Mohe City ushered in the first blizzard since the beginning of this winter.

Photo by Shao Tianli

5 cold snaps expected in November

　　On the 7th, the China Meteorological Administration held a press conference to introduce that from the 10th to the 13th, there will be a moderately strong cold air affecting our country. It will drop by 4-8°C, with a cooling rate of about 10°C in some areas.

It is estimated that in November, there will be five major cold air processes affecting my country.

　　Fang Xiang, deputy director of the National Meteorological Center, introduced that from the 8th to the 10th, the cold air force affecting our country is relatively weak; from the 11th to the 14th, there will be a moderately strong cold air affecting the central and eastern regions of our country, and the temperature will drop by 4-8 ℃ , the temperature drop in some areas is about 10 ℃.

Affected by this, the frost line will move further south. On the morning of the 15th, the first frost may occur in parts of northern Henan and Shandong.

　　"The strong cold air mainly affects the northern agricultural areas this time, which will increase the cost of cold protection and warmth in facility agriculture and animal husbandry, and has little impact on winter wheat that is still in the seedling stage." Fang Xiang proposed that before the frost comes, it is recommended that apples, pears, Jujube and other producing areas are harvested in time, and orchards have taken measures to prevent cold.

Warm sheds and livestock pens in northern facilities should also be reinforced and kept warm to prevent the impact of low temperatures.

At present, the 17,000-mu silage corn, oat and livestock forages re-sowed by the 22nd Regiment of the Second Division of the Xinjiang Production and Construction Corps have entered the harvesting period. Head) prepare livestock feed for wintering.

Photo by Xie Jianglin

La Niña events to last until winter 2022/2023

　　The latest monitoring shows that the La Niña event in the equatorial and central and eastern Pacific Ocean has continued since October.

This La Niña event is expected to last until the winter of 2022/2023.

　　Xiao Chan, deputy director of the National Climate Center, said that since the spring of 2020, the equatorial central and eastern Pacific has rapidly turned colder. The three-time La Niña that developed again in the autumn of 2019 is also called the "triple" La Niña event.

　　Xiao Chan said that the La Niña event is only one of the underlying forcing factors that affect the climate in my country in autumn and winter, and there is no need to "talk about the color change of La Niña". my country's winter climate is also affected by factors such as Arctic sea ice and Eurasian snow cover. At the same time, atmospheric Natural variability within the system also plays an important role.

　　According to the forecast of the meteorological department, the intensity of cold air affecting my country is generally weak this winter. Except for the eastern and western Inner Mongolia, northern northeast, most of southern China, southeastern southwest, and central and eastern northwest, the temperature in the rest of the country is lower than the same period of the previous year. Close to year-over-year or higher.

A shopping mall in Harbin places electric heating products in a prominent position Photo by Ma Chunqiu

Temperature conditions may affect preheating

　　November is the time when many places in the north start heating, and cities such as Lhasa and Yanji have started heating one after another.

According to the Beijing Municipal Commission of Urban Management, Beijing has officially started the trial operation of the heating system on November 7.

　　Fang Xiang said that regarding whether to heat up in advance, relevant standards have been formulated in various places, and the daily average temperature for 5 consecutive days is generally referred to.

Taking Beijing as an example, it is stipulated that when the daily average temperature for 5 consecutive days is 5°C or below, or when heavy snowfall and other weather may have an important impact on residents' living, heating can be advanced.

　　Fang Xiang introduced that according to the latest weather forecast, the temperature in Beijing was on the high side before the 11th, and there will be an obvious cold air activity from the 12th to the 14th, and the daily average temperature will drop below 5°C, but the duration may not meet the standard.

　　Fang Xiang said that local meteorological departments will closely monitor the weather, release forecast and early warning information in a timely manner, conduct research and judgment in advance, and provide first-hand information for heating decisions.

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