□ Some meteorological experts said that although the cold wave is coming fiercely, there is actually no necessary connection between the cold wave and the cold or warm winter. Only some areas may experience regional cold winter this winter.
□ The current round of cold weather sweeping across most of my country is gradually coming to an end.
After that, the temperature in most parts of my country will gradually rise to normal or slightly higher levels in the same period of the year.
Recently, affected by the strongest cold wave weather since this winter, the temperature in most parts of my country has plummeted.
On December 1, the temperature in southern my country continued to drop, and the lowest temperature in southern cities such as Guangzhou, Nanning, and Hangzhou set a new low in the second half of the year.
At the same time, the temperature in the northern region has begun to pick up, which indicates that the current round of cold weather sweeping across most parts of our country is gradually coming to an end.
After that, the temperature in most parts of our country will gradually return to normal or slightly higher levels.
Zhang Fanghua, chief forecaster of the Central Meteorological Observatory, said that the most notable feature of this cold wave is the severe cooling and wide-ranging impact.
Monitoring shows that as the cold wave moves eastward and southward, my country experienced cooling, strong winds, sand and dust, and large-scale rain and snow from north to south. The city hit a record low temperature in half a year.
Since the beginning of winter this year, the temperature in most parts of my country has been relatively high in the early stage, and affected by this cold wave, most parts of the country have turned on the "quick freezing" mode.
Why is there a cliff-like cooling?
According to Zhang Fanghua's analysis, November is in the adjustment stage of atmospheric circulation, and it is also a month when my country is relatively prone to cold waves.
Recently, with the adjustment of atmospheric circulation in the northern hemisphere, the cold air at high polar latitudes moves southward along the northwest airflow.
"Because the intensity of the polar cold air is significantly stronger than that of the same period in normal years, and the temperature in most parts of my country was relatively high in the previous period, compared with the general cold wave, the temperature drop caused by this round of cold air is relatively severe." Zhang Fanghua said.
The Central Meteorological Observatory predicts that after this cold wave, the high temperature in the central and eastern regions of my country will end and return to the normal level in the same period of the year.
Some meteorological experts said that although the cold wave is coming fiercely, there is actually no necessary connection between the cold wave and the cold and warm winter. Only some areas may experience regional cold winter this winter.
It is worth noting that due to the impact of the cold wave, the southern regions, which were previously plagued by drought, ushered in large-scale precipitation.
Under the premise of ensuring safety, many places in the south have moderately carried out artificial rainfall enhancement operations by taking advantage of "time" to alleviate the impact of drought.
The reporter learned from the China Meteorological Administration that since the cold wave "emerged", the Anhui Meteorological Department has increased rainfall by 45.36 million tons, and the local drought has basically been relieved, creating favorable conditions for the subsequent growth of local crops and safe wintering; 8 cities in Zhejiang have focused on supporting In areas with severe water supply, the area of increased rainfall has reached 25,000 square kilometers; Jiujiang, Jiangxi has carried out three-dimensional artificial rainfall enhancement operations, which has effectively reduced the level of forest fire danger and reduced the pressure on forest fire prevention.
In addition, Hunan, Hubei, Guangxi, Sichuan and other places have also carried out rainfall enhancement operations according to local precipitation conditions and rainfall enhancement potential.
During this round of cold wave, rainy and snowy weather and precipitation phase transitions were obvious, and many places across the country ushered in the first snow.
The Central Meteorological Observatory predicts that there will be light to moderate snow or sleet in some areas in the future, and freezing rain in central Guizhou and western Hunan at higher altitudes.
Meteorological experts reminded that freezing rain may not only bring traffic hazards, but also cause power facilities to freeze. Energy departments, power generation companies, power grid companies and other relevant institutions should strengthen prevention of freezing rain’s adverse effects on power supply and communication equipment, and be alert to wires and fans. If the equipment is damaged by ice coating, preventive measures should be taken in advance.
Although the cooling effect brought about by this round of cold wave is coming to an end, the low temperature in the southern region will continue.
Zhang Fanghua suggested that the public should add clothes in time to keep warm, and those who are sensitive to temperature changes, such as cardiovascular patients and asthma patients, should reduce going out.
Kang Qiongyan (Source: Economic Daily)