On the afternoon of February 15, from the Fengyun No. 4 high-definition visible light satellite cloud map, although there are still many clouds in the southern part of the mainland today, in many places, the sunshine is still online today. For example, in the western Sichuan Basin, Yunnan and many places, many places continue to usher in sunny weather today, and the afternoon becomes warmer; in the coastal areas, there are also many clear sky areas in many places in Zhejiang, Fujian, and Guangdong, and the temperature in many places in the sun has approached or exceeded 20 degrees, ushering in a relatively calm and warm Lantern Festival after the wet and cold Spring Festival.
At this time, many places in South China are actually facing the risk of a series of disasters such as water shortage and drought - on February 13, Li Guoying, deputy commander-in-chief of the National Defense Department and minister of water resources, pointed out at the special meeting of "Pearl River Salt pressure and salt, supplementation and light water supply" that since the beginning of winter in 2021, the most serious drought in the Pearl River Basin in the past 60 years is still developing, and the water from the West River and East River in the Pearl River Basin continues to be small, and it is predicted that the water will still be less in the later period; the Lantern Festival on the fifteenth day of the first month is coming. The astronomical tide in the Pearl River Estuary is supported by the superposition of 6-7 northeast winds, the salt tide is strong, and the water supply situation in the Pearl River Delta is grim.
There are also many netizens to ask: From January to February, so much rain and wet and cold, is there still a drought problem in the Pearl River Delta and the Pearl River Basin? Although the two provinces of Guangdong and Guangxi have been wet and cold and rainy for a period of time, there is still a "salty tide" in some parts of the Pearl River Delta, that is, the salty sea is rushing up but the fresh water is not enough to wash away - on the morning of February 15, the salinity of some stations in the Pearl River Delta soared, which was obviously exceeded, which was caused by the intrusion of seawater under the low flow of the Pearl River.
Judging from the monitoring data, it has indeed rained a lot in the south of the mainland since mid-January, and the general cumulative rainfall in the Pearl River Basin in Guangxi, Guangdong Province, has reached more than 100 mm. However, as far as the current situation is concerned, after the typhoon in October last year, South China switched to a dry and rainy state, the strong drought and the decline in river water levels were too severe, although the rain in January and February did help, but it obviously failed to completely improve the situation.
Is this south China going to become a desert climate? In the short term, this may still be affected by La Niña, but the good news is that in the future, the water vapor along the coast of South China will be abundant, and the rainfall will be more frequent, which can further improve the water shortage in many parts of South China. For example, around February 20, the forecast of the Central Meteorological Observatory pointed out that there will be moderate to heavy rain in the southern coast, and Guangdong may have significant rainfall in the whole province, which will still be of great help to a series of problems such as salt tides facing the region.
The medium-term weather forecast also pointed out that in the next 10 days (February 15-24), most of the southern region is still rainy weather, of which Jiangnan, Guangdong, central and eastern Guangxi and eastern Guizhou have 30 to 60 mm, some areas have 80 to 100 mm, guangdong north is more than 120 mm, the cumulative precipitation in the southwest region, Jiangnan and South China is significantly more than the same period of the year, which is conducive to further increasing the flow of rivers in Guangxi, alleviating a series of problems such as low water level and salt tide in some river sections. Although the wet and cold brought about by rainy weather will indeed be very uncomfortable, it is actually good news from the perspective of replenishing water resources.