대기 (Atmosphere)

  • 제33권1호
  • /
  • Pages.1-20
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  • 2023
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  • 1598-3560(pISSN)
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  • 2288-3266(eISSN)
한국기상학회 (Korean Meteorological Society)
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1904년 이래의 부산 기후 변동성 및 생활기상지수들의 기후변화 특성 연구

A Study on Characteristics of Climate Variability and Changes in Weather Indexes in Busan Since 1904

  • 전하은 (부산대학교 지구시스템과학부 대기환경과학과) ;
  • 하경자 (부산대학교 지구시스템과학부 대기환경과학과) ;
  • 김혜렴 (부산대학교 지구시스템과학부 대기환경과학과)
  • Ha-Eun Jeon (Department of Atmospheric Sciences, Pusan National University) ;
  • Kyung-Ja Ha (Department of Atmospheric Sciences, Pusan National University) ;
  • Hye-Ryeom Kim (Department of Atmospheric Sciences, Pusan National University)
  • 투고 : 2022.10.12
  • 심사 : 2022.11.21
  • 발행 : 2023.02.28
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초록

Holding the longest observation data from April 1904, Busan is one of the essential points to understand the climate variability of the Korean Peninsula without missing data since implementing the modern weather observation of the South Korea. Busan is featured by coastal areas and affected by various climate factors and fluctuations. This study aims to investigate climate variability and changes in climatic variables, extremes, and several weather indexes. The statistically significant change points in daily mean rainfall intensity and temperature were found in 1964 and 1965. Based on the change point detection, 117 years were divided into two periods for daily mean rainfall intensity and temperature, respectively. In the long-term temperature analysis of Busan, the increasing trend of the daily maximum temperature during the period of 1965~2021 was larger than the daily mean temperature and the daily minimum temperature. Applying Ensemble Empirical Mode Decomposition, daily maximum temperature is largely affected by the decadal variability compared to the daily mean and minimum temperature. In addition, the trend of daily precipitation intensity from 1964~2021 shows a value of about 0.50 mm day-1, suggesting that the rainfall intensity has increased compared to the preceding period. The results in extremes analysis demonstrate that return values of both extreme temperatures and precipitation show higher values in the latter than in the former period, indicating that the intensity of the current extreme phenomenon increases. For Wet-Bulb Globe Temperature (effective humidity), increasing (decreasing) trend is significant in Busan with the second (third)-largest change among four stations.

키워드

과제정보

본 연구는 부산대학교 기본연구지원사업(2년)에 의하여 연구가 수행되었음. 자료수집에 도움을 준 기후과학연구소 정우진 연구원께 감사를 드립니다.

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