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2020 Vol.53, Issue 6 Preview Page

Research Article

Areal average rainfall estimation method using multiple elevation data of an electromagnetic wave rain gauge

전파강수계의 다중 고도각 자료를 이용한 면적 평균 강우 추정 기법

Sanghun Lima*
,
Jeongho Choib
,
Won Kimc
임 상훈a*
,
최 정호b
,
김 원c
aResearch Fellow, Department of Land, Water and Environment Research, Korea Institute of Civil Engineering and Building Technology
bAdjunct Professor, Department of Mechatronics Engineering, Chosun College of Science & Technology
cSenior Research Fellow, Department of Land, Water and Environment Research, Korea Institute of Civil Engineering and Building Technology
a한국건설기술연구원 국토보전연구본부 연구위원
b조선이공대학교 메카트로닉스공학과 겸임교수
c한국건설기술연구원 국토보전연구본부 선임연구위원
* Corresponding Author
30 June 2020. pp. 417-425
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Abstract

In order to predict and prevent hydrological disasters such as flood, it is necessary to accurately estimate rainfall. In this paper, an areal average rainfall estimation method using multiple elevation observation data of an electromagnetic wave rain gauge is presented. The small electromagnetic rain gauge system is a very small precipitation radar that operates at K-band with dual-polarization technology for very short distance observation. The areal average rainfall estimation method is based on the assumption that the variation in rainfall over the observation range is small because the observation distance and time are very short. The proposed method has been evaluated by comparing with ground instruments such as tipping-bucket rain gauges and a Parsivel. The evaluation results show that the methodology works fairly well for the rainfall events which are shown here.

Keywords
Electromagnetic wave rain gauge
Multiple elevation
Dual polarization
Rainfall estimation

홍수와 같은 수문 재해를 예측하고 예방하기 위해서는 강우량을 정확하게 추정해야한다. 본 연구에서는 전파강수계의 다중 고도 관측 데이터를 사용한 면적 평균 강우량 추정 방법을 개발하였다. 소형 전파강수시스템은 K 대역 이중 편파 기술을 사용하여 매우 짧은 거리를 관측하는 소형 레이더이다. 면적 평균 강우 추정 방법은 관측 거리와 시간이 매우 짧기 때문에 관측 범위에서 강우 변동이 작다는 가정을 기반으로 한다. 제안된 방법은 지상우량계 및 파시벨우적계와 같은 지상 장비와 비교하여 평가되었다. 비교 평가된 강우 사상들에 대해 전파강수계로부터 추정된 평균강우와 지상장비로부터 관측된 강우량이 잘 일치함을 보여준다.

키워드
전파강수계
다중 고도각
이중편파
강우추정
References
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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 :6
  • Pages :417-425
  • Received Date : 2020-04-08
  • Revised Date : 2020-04-20
  • Accepted Date : 2020-04-20
  • DOI :https://doi.org/10.3741/JKWRA.2020.53.6.417
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