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Comparison of Precipitation Characteristics using Rainfall Indicators Between North and South Korea

강수지표를 이용한 남·북한 강수특성 비교

  • 이보람 (서울과학기술대학교 건설시스템디자인공학과) ;
  • 정은성 (서울과학기술대학교 건설시스템디자인공학과) ;
  • 김태웅 (한양대학교 건설환경플랜트공학과) ;
  • 권현한 (전북대학교 토목공학과)
  • Received : 2012.12.31
  • Accepted : 2013.08.21
  • Published : 2013.11.30

Abstract

This study aimed to understand temporal and spatial trends of rainfall characteristics in South and North Korea. Daily rainfall observed at the 65 stations in South Korea between 1963 and 2010 and the 27 stations in North Korea between 1973 and 2010 were analyzed. Rainfall Indicators for amount, extremes, frequency of rainfall were defined. Province-based indicators in the recent 10 years (i.e., between 2001 and 2010) were compared to those in the past (i.e., between 1963/1973 and 2000 for South/North Korea). In the recent 10 years, all the indicators except for the number of wet days (NWD) and 200-yr frequency rainfall (Freq200) increased in South Korea and all the indicators except for the annual mean daily rainfall over wet days (SDII) and annual total rainfall amount (TotalDR) decreased in North Korea. Furthermore, we performed the Mann-Kendall trend test based on the annual indicators. In some stations, decreasing trends in the past and increasing trends in the recent 10 years were found, and such opposite trends between two periods suggest he limitation in predicting and analyzing the rainfall characteristics based on the average. Results from this study can be used in analyzing the impact of climate change and preparing adaptation strategies for the water resources management.

Acknowledgement

Supported by : 한국연구재단

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