This study was conducted to investigate how PM10 concentration and Relative Humidity (RH) affected visibility in Jinju, Korea. A 9-yr dataset of 1 h averages for visibility, PM10, and RH data was analyzed to examine the correlation between these variables. On average, visibility decreased by 1.4 km for every 10 μg/㎥ increase in PM10 and by 2.1 km for every 10% increase in RH. In general, a negative correlation was observed between visibility and and PM10 concentration. However, under conditions of low PM10 concentration(< 15 μg/㎥) and visibility(< 2 km), there was a positive correlation between these two variables. In this case, RH levels were high (> 75%). A high correlation analysis between two variables need to be under control conditions with RH < 75%, PM10 15~100 μg/㎥, and visibility > 2 km.

Abstract
 1. 서 론
 2. 자료 및 분석방법
  2.1. 시정 및 미세먼지 농도 자료수집
  2.2. 수집 자료의 분석조건
 3. 결과 및 고찰
  3.1. 연도별, 월별, 24시간별 변화추이
  3.2. PM10 및 RH의 구간범위별 시정 변화
  3.3. 각종 조건별 특성
  3.4. 시정 및 PM10 농도별 변화 특성
  3.5. 회귀분석
 4. 결 론
 REFERENCES

• 김형갑(경남과학기술대학교 환경공학과) | Hyoung-Kab Kim (Department of Environmental Engineering, Gyeongnam National University of Science and Technology)
• 서정민(부산대학교 바이오환경에너지학과) | Jeong-Min Suh (Department of Bio-Environmental Energy, Pusan National University)
• 박정호(경남과학기술대학교 환경공학과) | Jeong-Ho Park (Department of Environmental Engineering, Gyeongnam National University of Science and Technology) Corresponding author