The Government had devised legislation of Special Act and drew up guidelines for improving air quality in Seoul Metropolitan area. In 2007 local government of Seoul, Incheon and Gyeonggi conducted the results of application policy by reduced air pollutants emission for the first time. Although there was reduction of air pollutant emission in each local government, it was ineffective as expected using air pollution monitoring database. Therefore we worked out a way to prepare modeling input data using the results of enforcement plan. And we simulated surface NO_2 and PM10 before and after decrease in air pollutants emission and examine reduction effects of air pollution according to enforcement regulation except other influence, by using MM5-SMOKE-CMAQ system.
Each local government calculated the amount of emission reduction under application policy, and we developed to prepare input data so as to apply to SMOKE system using emission reduction of enforcement plan. Distribution factor of emission reduction were classified into detailed source and fuel codes using code mapping method in order to allocate the decreased emission. The code mapping method also included a way to allocate spatial distribution by CAPSS distribution. According to predicted result using the reduction of NOx emission, NO_2 concentration was decreased from 19.1 ppb to 18.0 ppb in Seoul. In Gyeonggi and Incheon NO_2 concentrations were down to 0.65 ppb and 0.68 ppb after application of enforcement plan. PM10 concentration was reduced from 18.2 ㎍/㎥ to 17.5 ㎍/㎥ in Seoul. In Gyeonggi PM10 concentration was down to 0.51 ㎍/㎥ and in Incheon PM10 concentration was decreased about 0.47 ㎍/㎥ which was the lower concentration than any other cities.

Abstract
 1. 서 론
 2. 자료 및 방법
  2.1. 2007년 지자체별 시행계획 추진실적
  2.2. 모델링 수행 조건
  2.3. 모델링 정합도 분석
 3. 결과 및 고찰
  3.1. 시행계획 추진실적을 이용한 모델링 입력자료 작성
  3.2. 시행계획 추진에 따른 대기오염도 개선효과 분석
 4. 결 론
 참 고 문 헌

• 유철(국립환경과학원 기후대기연구부 대기공학연구과) | Chul Yoo (Air Pollution Control Research Division, Climate and Air Quality Research Department, National Institute of Environmental Research)
• 이대균(국립환경과학원 기후대기연구부 대기공학연구과) | Dae-gyun Lee (Air Pollution Control Research Division, Climate and Air Quality Research Department, National Institute of Environmental Research)
• 이용미(국립환경과학원 기후대기연구부 대기공학연구과) | Yong-mi Lee (Air Pollution Control Research Division, Climate and Air Quality Research Department, National Institute of Environmental Research) Corresponding Author
• 이미향(국립환경과학원 기후대기연구부 대기공학연구과) | Mi-Hyang Lee (Air Pollution Control Research Division, Climate and Air Quality Research Department, National Institute of Environmental Research)
• 홍지형(국립환경과학원 기후대기연구부 대기공학연구과) | Ji-hyung Hong (Air Pollution Control Research Division, Climate and Air Quality Research Department, National Institute of Environmental Research)
• 이석조(국립환경과학원 기후대기연구부 대기공학연구과) | Seok-jo Lee (Air Pollution Control Research Division, Climate and Air Quality Research Department, National Institute of Environmental Research)