The estimation of a biogenic volatile organic compound (BVOC, especially isoprene) and the influence of isoprene emissions on ozone concentrations in the Greater Busan Area (GBA) were carried out based on a numerical modeling approach during a high ozone episode. The BVOC emissions were estimated using a biogenic emission information system (BEIS v3.14) with vegetation data provided by the forest geographical information system (FGIS), land use data provided by the environmental geographical information system (EGIS), and meteorological data simulated by the MM5. Ozone simulation was performed by two sets of simulation scenarios: (1) without (CASE1) and (2) with isoprene emissions (CASE2). The isoprene emission (82 ton day -1 ) in the GBA was estimated to be the most dominant BVOC followed by methanol (56) and carbon monoxide (28). Largest impacts of isoprene emissions on the ozone concentrations (CASE2-CASE1) were predicted to be about 4 ppb in inland locations where a high isoprene was emitted and to be about 2 ppb in the downwind and/or convergence regions of wind due to both the photochemical reaction of ozone precursors (e.g., high isoprene emissions) and meteorological conditions (e.g., local transport).

Abstract
 1. 서 론
 2. 자료 및 방법
  2.1. 대상지역 및 사례일
  2.2. 모델구성 및 입력자료
 3. 결과 및 고찰
  3.1. 모델 검증
  3.2. isoprene 배출량 산정 결과
  3.3. isoprene 배출이 오존농도에 미치는 기여도 평가
 4. 결 론
 참 고 문 헌

• 김유근(부산대학교 지구환경시스템학부) | Yoo-Keun Kim (Division of Earth Environmental System, Pusan National University)
• 조영순(부산대학교 지구환경시스템학부) | Young-Soon Jo (Division of Earth Environmental System, Pusan National University) Corresponding Author
• 송상근(부산대학교 지구환경시스템학부) | Sang-Keun Song (Division of Earth Environmental System, Pusan National University)
• 강윤희(부산대학교 지구환경시스템학부) | Yoon-Hee Kang (Division of Earth Environmental System, Pusan National University)
• 오인보(울산대학교 환경보건센터) | In-Bo Oh (Environmental Health Center, Ulsan University)