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△National Sand and Dust Weather Forecast Map (Central Meteorological Observatory/Fa)
People's Voice of the World, April 22, Beijing Express In the blink of an eye, the traditional 24 solar terms of "Gu Yu" have arrived. This week's (April 22-28) national weather stage, experts believe that cold and warm air is still active, during which the trough from Lake Baikal to Mongolia will continue to throw out cold air, and at the same time, the warm and moist air flow north of the subtropical high will continue to move north. As a result, it will remain rainy in the south during the week. And under the warm and humid air flow pulse, there are also obvious rainfall and convection processes. The temperature in the north is fluctuating, and it may drop significantly after hitting a new high from the 25th to the 26th. In addition, along with the activity of cold air, there may also be wind-blown sand in the north.
△ National Air Pollution Meteorological Conditions Forecast Map (Central Meteorological Observatory/Fa)
Experts said that the monitoring data showed that this afternoon (22nd) in the central and western parts of Inner Mongolia and northern Ningxia, strong winds blew up sand and dust, among them, Inner Mongolia Baotou, Ordos, Wuhai, Alxa League, Ningxia Shizuishan, Yinchuan, Wuzhong, Zhongwei appeared "bursting" (* PM10≥600 micrograms/cubic meter), and some environmental quality stations PM10 exceeded 1000 micrograms/cubic meter. According to the analysis of the latest meteorological data, some of the sand and dust will continue to move eastward and southward tonight, which will affect Shaanxi and Shanxi; at the same time, some will enter Gansu along the Yellow River; it is expected that Lanzhou, Xi'an, and Taiyuan will "eat" the sand and dust tomorrow (23rd).
△ National Air Pollution Meteorological Conditions Forecast Map (Central Meteorological Observatory/Fa)
Industry insiders emphasized that it is not difficult to find that the situation is also not difficult to find, as experts said, this round of sand and dust gradually weakened the day after tomorrow (24th), and then tended to end. However, from the 24th to the 25th, the southern part of Mongolia and the Inner Mongolia area of the mainland may be sandy again. Because the atmospheric circulation is relatively flat, the dust is basically transported to the east after it rises, and the southward component is small, so the main area affected is northerly, and the focus is on Inner Mongolia. Combined with the dynamic changes of sand and dust from the evening of the 22nd to the 25th predicted by the numerical model, the sand and dust forecast of the Central Meteorological Observatory is somewhat less and weaker, and may actually be more. (Editor-in-charge/Xiangyu)
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