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항공관측 및 대기질 모델링을 활용한 장거리 이동물질 영향 연구
이성우(Sung-Woo Lee),최민혁(Min-Hyeok Choi),최진수(Jin-Su Choi),손정석(Jung-Suk Son),김성용(Sung-Yong Kim),장임석(Lim-Seok Chang),이성우(Sung-Woo Lee),김종춘(Jong-Chun Kim),반수진(Soo-Jin Ban),장성기(Seong-Ki Jang),황경철(Kyung-Chul 한국환경관리학회 2011 環境管理學會誌 Vol.17 No.3
This study was conducted as the Long-range Transboundary Air Pollutants (LTP) Project among Korea, Japan and China. The research aims to understand atmospheric environment in Northeast Asia as well as determine causes of air pollution in the region. It ultimately wants to provide scientific data for establishing air pollution reduction measures. To this end, several activities were performed including aircraft measurement, upper and synoptic atmosphere analysis, and modeling analysis. Aircraft measurement was carried out in 2010 during two intensive measurement periods in vertical and zonal paths. The first measurement period was between May 15~25 for 7 times, and the second one was November 15~22 for 8 times. The highest pollutants concentration was observed in 20 May 2010. On this day, the mean concentration of SO₂ was 5.56 ppb, CO was 0.23 ppm, O3 was 9.47ppb, NOx was 4.01 ppb, PAN was 1.37 ppb, and particle number was 194.968 N/㎤, higher than the other measurement days. The modeling result during the aircraft measurement was quite reliable as it was performed based on the 2006 INTEX-B emission data. In addition, high concentration events and tracts of air pollutant movement were well simulated in the model. But the modeling result also requires some further improvement as it tends to underestimate their absolute values.
장임석(Lim-Seok Chang),성경희(Kyoung-Hee Sung),최진수(Jin-Su Choi),반수진(Soo-Jin Ban),안준영(Joon-Young Ahn),서석준(Seok-Jun Seo),김수연(Su-Yeon Kim) 한국환경관리학회 2010 環境管理學會誌 Vol.16 No.2
본 연구는 한반도 주변지역 장거리 이동 대기오염물질의 특성파악과 중국으로부터 이동되어 오는 장거리 이동 대기오염물질이 한반도 대기질에 미치는 영향을 평가하고 그 원인 규명을 통하여 과학적인 저감대책을 수립하는 것이 최종 목적이다. 이러한 목적을 위하여 항공기를 이용하여 서해 상공에서 대기오염물질의 측정과 집중측정 기간에 대한 상층기상 및 종관 분석을 수행하였다. 1997~2009년까지 측정기간 중 서해상에 영향을 준 기류의 48%가 Ⅱ권역의 영향이었고 기류의 이동경로 별로 뚜렷한 농도 차이를 보였다. 그 외 권역은 1.09~3.78 ppb의 범위를 보였고 Ⅱ, Ⅲ권역 사례의 7~25%, 4~15%에 불과하여 권역 Ⅱ, Ⅲ을 영향을 SO₂ 고농도 사례의 주요 원인으로 생각할 수 있다. 또한 권역별 기류에 따른 이동량을 분석한 결과, SO₂의 경우 측정기간 중 유입량은 유출량의 약 5배로 서해안이 중국으로부터 이동하는 SO₂의 직접적인 영향을 받고 있는 것으로 나타났다. To estimate the long-range transboundary air pollutants, aircraft measurements, upper and synoptic atmosphere analysis, and modeling have been performed. Flight measurement was carried out over the West Sea of Korea when westerly winds to identify the impact of air pollutants from China on air quality in Korea and to estimate the transboundary influx of air pollutants. In this year, it was found that long-range air pollutants were transported in various patterns. On April 17, a high concentration appeared in two different layers, while on October 16 a high concentration occurred in all sections due to the stagnation of the pollutants. As a result of back trajectory analysis by region, 48 percent of the total air currents affecting air quality over the West Sea during the observation periods (1997~2009) came from Region Ⅱ, with the concentrations of each transport track distinctively different. The modeling was conducted using MM5, SMOKE, and CMAQ. The impact of long-range air pollutants on local air quality was examined through emissions sensitivity analysis for the spring (Mar.~May) and Autumn (Sep.~Nov.) of 2009. In spring, about 18~65% of the total PM10 concentration was influenced by long-range transported air pollutants, while in autumn from 11 to 51% of the PM₁? concentration was affected. These results will be better estimated through the constant improvement of emission data. For the accuracy of the modeling work, a preliminary study should be done first, including improvement of emission inventories, identification of complex aerosol and photochemical reaction mechanism in the atmosphere, and establishment of contribution assessment methodology.
박지훈(Ji-Hun Park),손정석(Jung-Sok Son),노순아(Soon-A Roh),신혜정(Hye-Jung Shin),반수진(Soo-Jin Ban),김소영(So-Young Kim),이민도(Min-Do Lee),김종춘(Jong-Chun Kim) 한국환경관리학회 2011 環境管理學會誌 Vol.17 No.3
This study presents characteristic of PM-10 concentration in association with Spatial Synoptic Classification(SSC) in Seoul and Jeju. The DM(Dry Moderate)’s frequency is the most high among the SSC in Seoul and Jeju. Daily PM-10 concentrations were grouped by SSC. DT(67 ㎍/㎥) is the highest mean among SSC in Seoul. DM & DT(48 ㎍/㎥) are is the highest mean among SSC in Jeju. Our result show that SSC’s monthly frequency SSC and monthly PM-10 concentration are a weak correlation.
이화운,오은주,노순아,반수진 한국대기환경학회 2003 한국대기환경학회지 Vol.19 No.6
There are variations in the temperature field due to urban heat island and anthropogenic heating so that regional scale meteorological field is changed. Therefore we simulate and predict the regional climate change according to surface characteristics through regional meteorological model. This study investigates the regional meteorological field by urbanization that influences in local circulation system using CSU-RAMS and simulates dry deposition velocity (V_(d)) using PNU/DEM which includes surface characteristics (such as albedo, surface hydrology and roughness length etc.) with calculated meteorological field. During the summer, horizontal distributions of V_(d) were simulated using CSU-RAMS and PNU/DEM at Busan metropolitan area. The estimated values of V_(d) were larger in forest and agricultural areas than water areas since ozone with low water solubility is destroyed slowly at wet surface or water.
이화운,김유근,정우식,오은주,임헌호,노순아,반수진,최현정,김민선,김헌숙 부산대학교 환경문제연구소 2002 環境硏究報 Vol.20 No.-
In the view of the results investigated the effect of air pollutants that is emitted from a new generator facilities, the total estimated concentration which is the summation of a contributional concentration and observational concentration is much less than that of atmospheric environment criterion for the air pollutants. So we can predict that the operation of the new generator facilities with mitigation equipment don't seriously affect around environment. At the same time, we compared the contributional concentration of before mitigation equipment with that of after it to examine the decreasing amount due to mitigation equipment. The result showed that the concentration of SO2, NO2 and PM-10 is reduced to 25%, 30% and 26% of original value, respectively.
이화운,김유근,정우식,문난경,이귀옥,반수진,임주연,현명숙,김민선 부산대학교 환경문제연구소 2001 環境硏究報 Vol.19 No.-
The characteristics of atmospheric factors were investigated using the surface observatory data. In this analysis, we can find that the annual mean temperature, relative humidity, and precipitation show the 14.39℃, 63.3%, and 1178㎜, respectively. The prevailing wind direction is southwestern wind, and the mean wind speed shows 2.7㎧. The amount of cloud is abundant during the summer because of Jang-ma phenomenon and convective cloud induced by terrain effect. The annual mean duration of sunshine represents about 2221 hours.