JOURNAL ARTICLE

On Ground-Truth Designs of Radar Rainfall Using Rain Gauge Rainfall

Chulsang YooByoung-Soo KimKyoung-Jun KimJeongho Choi

Year: 2007 Journal:   Journal of Korea Water Resources Association Vol: 40 (9)Pages: 743-754   Publisher: Korea Water Resources Association

Abstract

본 연구에서는 레이더 강우의 ground-truth를 위해 가능한 3가지 비교방법, 즉 3가지 ground-truth설계를 이론적으로 검토하였다. 이론적인 결과는 먼저, WGR강우모형으로 모의된 3차원 강우장에 적용하여 검토하였으며, 아울러 실측자료인 관악산 레이더 자료 및 레이더 관측영역 내 건설교통부 관할 지상관측소 강우 자료에 적용하여 평가하였다. 전체적인 적용결과는 이론적인 분석내용 및 모의 강우를 이용하여 수행한 내용과 유사함을 확인하였다. 결론적으로 레이더 및 우량계 강우가 양(+)인 경우만을 비교하는 형태는 심각한 설계편의를 유발하여 레이더 강우의 ground-truth에 적절하지 못함을 확인할 수 있었다. This study theoretically compared three possible methods for the ground-truth, that is three ground-truth designs of radar rainfall using the rain gauge rainfall. Theoretical results derived are first applied to the rainfall field generated by the Waymire-Gupta-Rodriguez Iturbe(WGR) model, and then to the Mt. Gwanak radar data using the rain gauge data from MOCT within the radar range of observation. Overall application results were found to be similar to those from theoretical studies, also those from the application to the WGR rainfall field. In conclusion, the ground-truth design using only positive(+) rainfalls from both radar and rain gauges causes serious design bias to be inappropriate as a ground-truth design.

Keywords:
Ground truth Radar Rain gauge Meteorology Environmental science Range (aeronautics) Remote sensing Geology Computer science Geography Engineering Artificial intelligence Telecommunications Aerospace engineering

Metrics

6
Cited By
0.23
FWCI (Field Weighted Citation Impact)
18
Refs
0.60
Citation Normalized Percentile
Is in top 1%
Is in top 10%

Citation History

Topics

Precipitation Measurement and Analysis
Physical Sciences →  Earth and Planetary Sciences →  Atmospheric Science
Soil Moisture and Remote Sensing
Physical Sciences →  Environmental Science →  Environmental Engineering
Meteorological Phenomena and Simulations
Physical Sciences →  Earth and Planetary Sciences →  Atmospheric Science

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