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△National Sand and Dust Weather Forecast Map (Central Meteorological Observatory/Fa)
People's Voice of the World, April 13, Beijing Express In the blink of an eye, the "Qingming" of the traditional 24 solar terms has arrived. In the national weather stage this week (April 8-14), in the opinion of experts, the rainfall in the south first decreased and then increased, mainly on the 11th and 14th, and the core area was in the south of the Yangtze River. The northern region was affected by two shortwave troughs from the 8th to the 10th, and there was also weak precipitation. In addition, from the 12th to the 15th, a deeper upper-air trough moved eastward to cooperate with the Mongolian cyclone, resulting in precipitation, cooling, strong winds, and sand and dust in the north. Therefore, the temperature in Northeast China and North China fluctuates greatly.
△ Xinjiang-13 rooms weather real-time monitoring (Central Meteorological Observatory/Fa)
Experts said that the monitoring data showed that from last night (12th) to this morning (13th), strong winds in Xinjiang and western Gansu kicked up sand and dust, and during this period, the famous "tuyere" Xinjiang 13 rooms, gusts of 39.2 m/s, 13 gale force. At the same time, the air quality in Urumqi, Turpan, Hami, Jiayuguan and Jiuquan has "exploded" one after another (*PM10≥600 micrograms/cubic meter, that is, "off the table"). Among them, PM10 concentrations in Hami and Jiuquan exceeded 9,000 micrograms per cubic meter.
△Jiuquan air quality monitoring (Ministry of Ecology and Environment/Fa Zhen Qi Network/Map)
It is worth noting that industry insiders emphasized that it is not difficult to find that it is not difficult to find that this is the strongest sand and dust weather process since this year (2024), as experts say. Theoretically, the thermal conditions are poor from night to early morning, and the sand is not as bad as from afternoon to evening when the thermal conditions are good. As a result, the sand in Mongolia and western Inner Mongolia is likely to be more severe this afternoon, and PM10 concentrations are likely to be even higher, as the upper limit of existing monitoring instruments should be 10,000 micrograms per cubic meter, so the maximum is generally 9,999 micrograms per cubic meter. (Editor-in-charge/Xiangyu)
*Editor's Note:
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