Hydrological impact of Atmospheric River landfall on the Korean Peninsula

Heechan Han; Changhyun Choi; Heyjin Moon; Jaewon Jung; Choongke Lee; Hung Soo Kim

doi:10.3741/JKWRA.2020.53.11.1039

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2020 Vol.53, Issue 11 Preview Page

Research Article

Hydrological impact of Atmospheric River landfall on the Korean Peninsula Atmospheric River의 한반도 수문학적 영향에 대한 연구

30 November 2020. pp. 1039-1047

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Abstract

Atmospheric rivers, which transport large amount of water vapor from mid-latitude to the inland, are an important driving force of water cycle and extreme hydrologic phenomenas. The main objective of this study is to analyze the hydrological impact of the AR landfalls on the Korean Peninsula in 2000 - 2015. The result showed that the AR is closely related to the characteristics of precipitation, water level and runoff in the Korean Peninsula. The landfalls of the AR affected about 57% of annual precipitation on the Korean Peninsula, and had a greatest impact on the summer rainfall. It also affected the water level and runoff at the five major rivers of Korea, and water levels exceeding the thresholds of flood warning were observed when the AR landed. Moreover, it was found that the runoff above the third quartile with AR landfalls. These results suggest that the AR not only has a significant influence on the hydrological characteristics of the Korean Peninsula, but also have a close relationship with the extreme hydrological events like floods. The results of this study are expected to be used as the reference for the analysis of the impact of the AR on the various fields in the Korean Peninsula.

Keywords

Atmospheric river

The Korean peninsula

Hydrological impacts

Floods

중위도에서 내륙으로 많은 양의 수증기를 운반하는 대기천(Atmospheric rivers, AR)은 물 순환과 극한 수문현상에 큰 영향을 미친다. 본 연구에서는 2000 – 2015년도에 한반도에 상륙한 AR이 수문학적으로 미치는 영향력을 분석하였다. 그 결과 AR은 한반도 지역의 강우, 하천수위 및 유량 특성과 밀접하게 연관되어 있는 것으로 나타났다. AR의 상륙이 한반도 연 강우량의 약 57%에 영향을 주었고, 여름철 강우량에 큰 영향을 주는 결과를 보였다. AR은 한반도 5대강 주변의 하천 수위와 유량 발생에도 영향을 주었는데, AR이 상륙한 당시 홍수 주의보 및 경보 기준을 넘는 수위가 관측되었다. 또한 유량의 경우, 한반도 5대강 대부분 지역의 3분위 이상 유량 값의 발생에 영향을 주는 것으로 나타났다. 이러한 결과들은 AR이 한반도 수문학적 특성에 큰 영향을 미칠 뿐만 아니라, 홍수와 같은 극한 수문 현상 발생과 매우 밀접한 관련이 있음을 시사하고 있다. 본 연구는 한반도의 다양한 영역에 대한 AR의 영향 분석에 대한 기초 자료로 활용될 수 있을 것으로 기대하는 바이다.

키워드

대기천

한반도

수문학적 영향

홍수

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Information

Publisher :KOREA WATER RESOURECES ASSOCIATION
Publisher(Ko) :한국수자원학회
Journal Title :Journal of Korea Water Resources Association
Journal Title(Ko) :한국수자원학회 논문집
Volume : 53
No :11
Pages :1039-1047
Received Date : 2020-09-09
Revised Date : 2020-10-13
Accepted Date : 2020-10-13
DOI :https://doi.org/10.3741/JKWRA.2020.53.11.1039

Journal of Korea Water Resources Association ISSN:2799-8746(Print) 2799-8754(Online) 한국수자원학회 논문집

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