In February, the cold air across the country was active in stages, and the central and eastern regions changed greatly.

　　China News Service, February 7 (Xinhua) The China Meteorological Administration held a press conference for February 2024 on the 7th. At the meeting, Zhang Hengde, deputy director of the National Meteorological Center, introduced a review of the national weather and climate characteristics in January and a climate trend forecast in February.

　　Zhang Hengde said that in January, the temperature was high and the precipitation was high. In January, the national average temperature was -3.8°C, 1.0°C higher than the same period in normal years, and the sixth highest in the same period in history since 1961. Except for the lower temperatures in the Qinghai-Tibet Plateau and northern Heilongjiang, the temperatures in most other areas across the country were 0.5 to 4°C higher.

　　In January, the national average precipitation was 16.3 mm, 13.3% more than the same period in normal years. The spatial distribution of precipitation varies greatly, with less precipitation along the western and eastern coasts and more precipitation in most central areas. Guizhou has the most precipitation in the same period in history.

　　The main weather and climate events in my country in January are as follows:

　　First, the fourth cold air process affects our country. There were four cold air processes affecting my country in January (June 6-7, 10-11, 15-16 and 19-23), 0.6 more than the same period in normal years (3.4). Among them, the 19th to 23rd was a nationwide cold wave weather process. Affected by it, the northern and central and eastern regions of my country experienced a significant cooling, which had a certain impact on agriculture, energy, transportation, urban operations, and people's lives.

　　Second, there are more snowfall days in Heilongjiang, central and eastern Inner Mongolia, and eastern Tibet, which affects a wide range of areas. In January, except for southern South China, Yunnan, and southern Xinjiang, snowfall occurred in most areas of my country. Heilongjiang, central and eastern Inner Mongolia, and eastern Tibet had 2 to 6 more snowfall days than the same period in normal years. Affected by snowfall and icy roads, many high-speed sections in more than ten provinces (regions) have been closed or traffic control has been implemented, and trains on many high-speed railway lines such as Shanghai-Kunming, Beijing-Hong Kong, Beijing-Guangzhou, and Hefu have been suspended or delayed. Many scenic spots in Zhejiang, Guizhou, Hunan, Jiangxi and other places were closed, and the electricity load in Guizhou, Guangxi, Anhui and other places hit record highs.

　　Third, the drought in southwest China has eased. In early January, temperatures were high and precipitation was low in Yunnan, Guizhou, Sichuan and Chongqing. Meteorological drought developed, reaching its peak in mid-January. Subsequently, an obvious precipitation process occurred in the above-mentioned areas, and the meteorological drought was significantly alleviated. Monitoring on January 31 showed that moderate meteorological drought existed only in central and western Sichuan and southern Sichuan, northeastern Yunnan, and western Guizhou.

　　In January, a total of 29,000 early warning messages were issued across the country, a year-on-year decrease of 0.15%. Thunder and lightning, blizzard and fog warning information all increased significantly year-on-year. Low temperature and heavy fog warning information were the highest in the same period in the past years (2017-2023); wind, haze and frost warning information decreased by 45.7%, 59.0% and 62.2% respectively year-on-year. .

　　Zhang Hengde introduced climate trends in February 2024. In terms of precipitation, in February 2024, Beijing, Tianjin, Hebei, Shanxi, central and western Inner Mongolia, Liaoning, Shanghai, Jiangsu, Zhejiang, Anhui, Fujian, Jiangxi, Shandong, Henan, Hubei, Hunan, most of Guangdong, Guangxi, and northeastern Chongqing The precipitation in central and southwestern Sichuan, central and western Yunnan, most of Tibet, Shaanxi, eastern Gansu, southwestern Qinghai, Ningxia, and northern Xinjiang is relatively high. The rest of the country has precipitation that is close to normal for the same period of the year to less than normal. Among them, southern Xinjiang and other places have more precipitation. 2 to 50% less. Heavy rainfall is mainly concentrated in early February (February 1 to 7).

　　In terms of temperature, in February, temperatures in Beijing, Tianjin, Hebei, central Inner Mongolia, Liaoning, central and northern Jiangsu, central and northern Anhui, Shandong, Henan, northern Hubei, southwestern Sichuan, Yunnan, Tibet, and southwestern Qinghai were warmer than normal for the same period. The temperature is low, with northern Jiangsu, northern Anhui, most of Shandong, eastern Henan, western Yunnan, southern Tibet and other places being 1 to 2°C lower. Temperatures in the rest of my country are close to normal for the same period of the year to higher, with most of Jiangxi, Hunan, and northern Guangxi , eastern Guizhou, western Inner Mongolia, Gansu Hexi, northern Xinjiang and other places were 1 to 2°C higher.

　　In terms of cold air, in February, the cold air was active in stages, and the central and eastern regions changed greatly. In addition to the cold air process that caused widespread rain, snow and cooling in the central and eastern regions of my country in the first ten days of the year, it is expected that there will be two more cold air processes that will affect our country. The time and intensity of their occurrence are respectively: mid-mid (moderate) and mid-late (weak). ).