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From the night of the 9th, the long-lost snowflake finally "go to the appointment" in North China Huanghuai, bringing moisture to the thirsty land. How long will this large-scale rain and snow weather last? Can we alleviate the drought in China's major grain producing areas? How to use the favorable weather situation to win the drought and protect the harvest?
Since October last year, due to the lack of water vapor, there are few rain and snow in Huanghuai and other places in North China. According to data from the Ministry of Agriculture, as of February 9, the drought-affected area of ​​winter wheat in Henan, Hebei, Shandong, Shanxi, Anhui, Jiangsu, Gansu and Shaanxi reached 115.95 million mu.
Zhang Peiqun, chief expert of the National Climate Center, said that there are two main reasons for the delay in rain and snow in the arid regions of northern China. First, the obvious adjustment of the polar atmospheric circulation has led to a significant increase in the cold air affecting northern China. At the same time, the subtropical high pressure from the western Pacific is abnormally weak, resulting in the warm and humid air flow not being able to go north, and the snowfall lacks favorable water vapor conditions.
Under the long drought, this wide range of rain and snow weather is undoubtedly good news for Huanghuai and other places in North China.
According to the monitoring of the Central Meteorological Observatory, the largest range of snowfall occurred in the northern region from 5 pm to 5 pm on the 9th, and small to medium snow or sleet generally occurred in the northwestern region, central Inner Mongolia, central North China, and central and western Huanghuai. the weather. In the arid regions of northern China, heavy snow is common in southwestern Shaanxi and central and southern Henan. Small to medium snow weather is also common in Hebei, Beijing, Tianjin and other places.
However, due to the weak precipitation process and the short duration, experts from the National Meteorological Center of the National Meteorological Center believe that the precipitation is conducive to soil growth in the winter wheat area of ​​Huanghuai and other places, but has limited effect on mitigating drought. In particular, there is still no effective precipitation in the arid regions of central and eastern North China and north central Shandong, and the drought will continue.
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