수치모델을 이용한 인공증우에 따른 PM10 저감효과 분석
Analysis of PM10 Reduction Effects with Artificial Rain Enhancement Using Numerical Models
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초록
Recently, interest in the possibility of a washout effect using artificial rain enhancementtechnology to reduce high-concentration fine dust is growing. Therefore, in this study, thereduction rate of PM10 concentration according to the amount of artificial rain enhancement wascalculated during Asian Dust event which occurred over the Korean Peninsula on March 29,2021 using air quality model [i.e., Community Multiscale Air Quality (CMAQ)] combined withthe mesoscale model for artificial rain enhancement (i.e., WRF-MMS). According to WRFMMS,the washout effect lasted 5 hours, and the maximum precipitation rate was calculatedto be 1.5 mm hr–1. According the CMAQ results, the PM10 reduction rate was up to 22%, andthe affected area was calculated to be 6.4 times greater than that of the artificial rain enhancementarea. Even if the maximum amount of precipitation per hour is lowered to 0.8 mm hr–1(about 50% level), the PM10 reduction rate appears to be up to 16%. In other words, it is believedthat this technique can be used as a direct method for reducing high-concentration finedust even when the artificial rain enhancement effect is weak.
Abstract
Recently, interest in the possibility of a washout effect using artificial rain enhancementtechnology to reduce high-concentration fine dust is growing. Therefore, in this study, thereduction rate of PM10 concentration according to the amount of artificial rain enhancement wascalculated during Asian Dust event which occurred over the Korean Peninsula on March 29,2021 using air quality model [i.e., Community Multiscale Air Quality (CMAQ)] combined withthe mesoscale model for artificial rain enhancement (i.e., WRF-MMS). According to WRFMMS,the washout effect lasted 5 hours, and the maximum precipitation rate was calculatedto be 1.5 mm hr–1. According the CMAQ results, the PM10 reduction rate was up to 22%, andthe affected area was calculated to be 6.4 times greater than that of the artificial rain enhancementarea. Even if the maximum amount of precipitation per hour is lowered to 0.8 mm hr–1(about 50% level), the PM10 reduction rate appears to be up to 16%. In other words, it is believedthat this technique can be used as a direct method for reducing high-concentration finedust even when the artificial rain enhancement effect is weak.
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