The city center viewed from the Seoul Metropolitan Office of Education in Jongno-gu was hazy on the morning of the 12th, when the fine dust emergency reduction measures were implemented in the metropolitan area for two consecutive days. yunhap news
In the spring, the fine dust of unwelcome visitors soared to the level of’very bad’, centering on the central region for two days in a row. As in March 2019, when the emergency measures to reduce fine dust in the metropolitan area for the first time in history were put in place for 7 consecutive days, the main cause is the stagnation of the atmosphere without wind. Even the spring rain that fell nationwide on the 12th was insufficient to improve air quality. In the central region, the clear sky is expected to be seen only around the 16th.
As a result of the measurement of the National Institute of Environmental Sciences, the ultrafine dust (PM2.5) on this day was’very bad, mainly in central regions such as Seoul (the highest value of 90㎍/㎥), Incheon (122㎍/㎥), and Gyeonggi Province (138㎍/㎥). (76㎍/㎥ or more)’ level has risen. In particular, the concentration of ultrafine dust in Chungnam once soared to 144㎍/㎥. The fine dust (PM10) also showed 204㎍/㎥ in Gyeonggi, and went back and forth with’bad (81~150㎍/㎥)’ and’very bad (more than 151㎍/㎥)’ all day, mainly in western regions.
Air quality is expected to remain in this state through the weekend and until Monday (15th). Kang Kyung-hee, a forecaster of the National Institute of Environmental Sciences, said, “Since the 8th, we have been in the zone of high pressure (downdraft), and the wind speed has weakened and atmospheric congestion has occurred, so fine dust generated in Korea cannot escape.” It will be high.” According to the weekly forecast of the National Institute of Environmental Sciences, it is not until the 16th that the concentration of ultrafine dust nationwide returns to’low (0~35㎍/㎥)’.
On the morning of the morning of the 12th, Minister of Environment Hanjeong-ae visited the Sihwa plant in Siheung, Gyeonggi-do, a fine dust reduction plant, and is talking with officials while looking at the solid fuel boiler facility. yunhap news
The government has self-addressed that “significant reduction was achieved” through the fine dust seasonal management system (December to March of the following year) and emergency reduction measures for fine dust. Dancing. The government’s measures to reduce fine dust are aimed at prohibiting the operation of 5-class vehicles, stopping the operation of coal power plants, and stopping the operation of fugitive dust-generating workplaces.
Professor Song Chang-geun of Ulsan University of Science and Technology’s Department of Urban Environment Engineering said, “Measures such as emergency reduction measures and seasonal management systems are only emergency measures to prevent the air quality from deteriorating in the period of high fine dust concentration.” It is emphasized that concentrations must be managed in the long term through medium and long-term measures such as structural reorganization.”
Citizens wearing masks are taking a walk in Ichon Hangang Park in Yongsan-gu, Seoul on the 12th, when emergency measures to reduce fine dust were issued in the metropolitan area. Newsis
It is also pointed out that the debate about whether it is from China or from domestic is not very helpful in solving the problem. Professor Kim Sun-tae of the Department of Environmental Safety Engineering at Ajou University said, “It is true that China has a higher concentration of fine dust than ours, but China’s fine dust reduction range is greater than ours.” It’s important to do it more powerfully.” Academia believes that if the domestic atmosphere is stagnant for only two days, the concentration of fine dust increases to a bad level even if there is no inflow to China.
There is also a gloomy analysis that the atmosphere congestion on the Korean Peninsula, which causes high concentrations of fine dust, may occur more frequently in the future due to global warming. Professor Kim said, “Even today, the low pressure generated in the offshore Japan travels north and prevents the high pressure flow moving from the west to the east of Korea, resulting in atmospheric stagnation.” I can,” he explained.
Song Okjin reporter [email protected]
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