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자료유형
학술저널
저자정보
강채연 (제주대학교) 송상근 (제주대학교) 문수환 (국립기상과학원) 임윤규 (국립기상과학원) 장기호 (국립기상과학원) 채상희 (국립기상과학원)
저널정보
한국대기환경학회 한국대기환경학회지(국문) 한국대기환경학회지 제39권 제3호
발행연도
2023.6
수록면
335 - 350 (16page)
DOI
10.5572/KOSAE.2023.39.3.335

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This study investigated the seeding effect of hygroscopic aerosol particles (CaCl₂ and NaCl) on artificial rainfall enhancement (ARE) around the Boryeong Dam (BRD) region located in Chungnam Province in spring (April) 2021. In addition, a sensitivity analysis on the ARE changes caused by the changes in seeding duration and amount of CaCl₂ and NaCl was conducted in the study area. This analysis was performed by two sets of simulation experiments: (1) meteorological model simulation with (i.e., SEED) and (2) without a modified Morrison microphysics scheme for CaCl₂ and NaCl (i.e., UNSD). The model study indicated the possibility that the seeding of hygroscopic materials around the BRD can affect the ARE in its surrounding/downwind regions. The mean 180 min-accumulated ARE between the SEED and UNSD (SEED-UNSD) due to CaCl₂ seeding was 0.44 mm in the study area (15.5% increase relative to 2.84 mm of the UNSD), with the largest ARE of 2.95 mm (35.5% increase relative to 8.32 mm) in regions located northeast of the BRD along southwesterly winds. For NaCl, the mean 180 min-accumulated ARE was 0.47 mm (16.9% increase relative to 2.77 mm), with the largest ARE of 3.93 mm (43.4% increase relative to 9.04 mm) in the same region as CaCl₂. The magnitudes of 60 min- and 120 min-accumulated AREs were smaller than those of the 180 min-accumulated ARE. In the sensitivity analysis, the increases in CaCl₂ seeding duration (2- and 3-fold) resulted in significant changes (a factor of 3 increase) in the mean 180 min-accumulated ARE in the study area, but there were no distinct changes in case of increased NaCl seeding duration. Unlike the seeding duration, the AREs of both CaCl₂ and NaCl were not sensitive to increases in their seeding amount (2- and 3-fold), possibly due to overseeding.

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Abstract
1. 서론
2. 자료 및 방법
3. 결과 및 고찰
4. 결론
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