Power spectral analysis for PM10 observed at 10 cities in the Korean Peninsula from 2004 to 2010 was carried out to examine the spatial and temporal features of PM10 evolution cycle. The power spectrum analysis proposed 9 typical cycles (0.5 day, 1day, 5.4day, 8~10day, 19~21day, 26day, 56day, 180day and 365day) for PM10 evolution and the cycles are strongly associated with dilution and transportation due to the meterological influence. The spectrum intensity of 5.4day and 26day PM10 evolution cycles mainly depend on the advection cycles of synoptic pressures system and long-term variation of climatological forcing, respectively.
The intensity of PM10 evolution with longer temporal cycles than one day tends to be stronger in La niña period in comparison with that in El niño period. Mean of typical intensity of PM10 evolution in La niña period estimated to be 30% larger than El niño period. Thus the global scale meteorological phenomena such as El niño and La niña also can influence the variation of wind system in the Korean Peninsula and PM10 evolution. but global scale forcing tends to influence different manner for PM10 evolution in accordance with its temporal cycles.

Abstract
 1. 서 론
 2. 자료 및 방법
  2.1. 분석 자료
  2.2. 자료 분석 방법
 3. 결과 및 고찰
  3.1. 장기관측 자료를 이용한 PM10 발생 주기분석
  3.2. 엘니뇨/라니냐에 따른 PM10 분포 특성
 4. 결 론
 참 고 문 헌

• 장재훈(부산대학교 지구환경시스템학부) | Jae-hoon Jang (Division of Earth Environmental System, Pusan National University)
• 이화운(부산대학교 지구환경시스템학부) | Hwa Woon Lee (Division of Earth Environmental System, Pusan National University) Corresponding author
• 이순환(부산대학교 환경연구원) | Soon-Hwan Lee (Institute of Environmental Studies, Pusan National University)