This study analyzes the characteristics of ozone weekend effect(OWE) in Busan. O3 concentration on Sunday was over 10% higher than that on weekdays in all areas except for Kwangbokdong, Taejongdae, and Joadong. Such a difference was higher in the industrial area than in the residential area. O3 generation was facilitated by the decrease in NOx emission on Sunday in VOC-limited regime where the VOC/NOx ratio is low. Low NO concentration in the Sunday morning decreased inhibition of O3. NO-O3 crossover time on Sunday was shorter than that on weekdays which in turn extended the accumulated duration of O3. Future studies can include whether the entire Busan is VOCS-limited or the coastal area is VOCS-limited while the inland area is NOX-limited.

Abstract
 1. 서 론
 2. 자료 및 방법
 3. 결 과
  3.1. 부산지역 O3, NO, NO2 농도의 주중/주말 차이
  3.2. 부산지역 주중/일요일 O3과 NOX 농도의 일변화
 4. 고 찰
  4.1. 가설 ①에 대한 고찰
  4.2. 가설 ⑦에 대한 고찰
 5. 결 론
 참 고 문 헌

• 전병일(신라대학교 환경공학과) | Byung-Il Jeon (Department of Environmental Engineering, Silla University) Corresponding author