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- 저자 : 선우 영(Sunwoo Young) (검색결과 3 건)
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잠재적 화산재해 위험평가를 위한 화산분화의 3차원 화학수송모델 적용
김도윤(Kim Do yoon),김혜림(Kim Hye Rim),김유정(Kim Yoo Jung),박재은(Park Jae Eun),이승수(Lee Sung su),선우 영(Sunwoo Young) 한국방재학회 2017 한국방재학회논문집 Vol.17 No.5
화산분화를 3차원 대기화학모델인 CMAQ에 적용하기 위해, 화산분화의 배출특성을 산출하고 이를 적용시키는 방법론에 관한 연구를 수행하였다. CMAQ을 활용한 화산분화 모사를 위해서는 화산재의 화학조성, 분연주 상승 고도 및 배출량의 수직질량분포, 시간별 배출량 할당, 총 분화시간 등과 같은 화산의 배출특성을 적용한 고해상도의 화산 배출량 데이터가 요구되며, 이에 기존 화산의 분화특성에 관한 연구들을 통하여 해당 인자들을 산출하였다. 화산분화의 CMAQ 모사결과는 2012년 5월 14일 백두산 분화를 가정한 사례를 제시하였고, 실제 분화사례와의 비교를 위해 일본 아소산의 2016년 10월 8일 분화사례를 모사하여 도쿄 VAAC에서 제공하는 위성관측자료와의 비교결과를 제시하였다. This study presents source parameterization methodology of volcanic eruption and it s application for a 3-Dimensional Chemical Transport model, the Community Multi-scale Air Quality (CMAQ) modeling system. In order to simulate volcanic eruption using CMAQ, high resolution emission data are required, including source parameterization for eruption column height, vertical mass distribution, temporal mass distribution regarding duration of eruption, and chemical composition of volcanic ash. For calculation of emission data, we investigated prior studies on source parameters of volcanic eruption. We present CMAQ modeling results assuming an eruption of Mt. Baekdu on 14 May, 2012. For verification of model results, we compared the CMAQ model results to satellite observations provided by the Tokyo Volcanic Ash Advisory Center (VAAC) for a Mt. Aso eruption on 8 October 2016.
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한기태,선우 영 건국대학교 산업기술연구원 1998 건국기술연구논문지 Vol.23 No.-
The purpose of this study was to investigate the various emission sources and estimate their emission amounts for part of Kyonggi province. Data from the Ministry of Environment was utilized and the estimates were obtained using the emission factor method. The resulting emission inventory system may be used in environmental impact evaluation, estimation of local ambient air pollution, evaluating environmental pollution policies, and as input data for air pollution models. Results showed that based on statistics for 1994-95 for the portion of Kyonggi province investigated here the amount of SO₂emitted is about 17184.6 ton/year, 243224.1 ton/year for NOx, and 38779.1 ton/year for CO. TSP is analyzed by two methods, one measuring prior to pollution controls and the other under post-treatment conditions. The former is 3161.0 ton/year and the latter is 626.8 ton/year. Limitations of these results are that the emission factors are from the U.S.E.P.A. and therefore are not completely reliable for our conditions here in Korea. However, this initial comprehensive analysis should serve as a good starting point for further studies in this field.
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김조천,김기준,홍지형,선우 영,임수길 한국대기환경학회 2004 한국대기환경학회지 Vol.20 No.1
In order to compare the NVOC (Natural Volatile Organic Compound) emission rates from oak trees, the emission rates of isoprene were quantitatively measured in situ based on tree species and region. As a result, the emission rates from Quercus serrata T. were found to be 1000 times greater than those from Quercus acutissima C. However, the emission rates at the Chiri and Gumsung mountain sites did not show any significant differences in summer. Cuvette tests using four different oak species also supported that there was a tremendous difference in emission rates between Quercus serrata T. and Quercus acutissima C. It was found that the emission rates from the trees were highest on the order of Quercus serrata T., Quercus aliena B., Quercus acutissima C. and Quercus variabilis B.
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