Abstract
The spatial variation characteristic of ground rainfall data is an important factor in determining the accuracy of the flush flood forecasting.
This study has evaluated how affect it is the spatial distribution characteristics of ground rainfall network for radar rainfallcorrection. For that, the spatial distribution of rainfall network is quantified by the nearest neighbor index and the error analysisbetween the ground rainfall and radar rainfall is analyzed by G/R ratio. The suggested method is applied to Pyongchang river basin.
As a result, it is found that the error between ground rainfall data and radar rainfall data is the smaller in the case of the best spatialdistribution than the worst spatial distribution. This result implies that the spatial distribution is more important factor in the accuracyof radar correction. The achievement of study is judged that it would be able to contribute the quality improvement of rainfall data bythe efficient operation of rainfall network in limited circumstance of weather stations, along with the qualitative improvement of floodwarning system.
This study has evaluated how affect it is the spatial distribution characteristics of ground rainfall network for radar rainfallcorrection. For that, the spatial distribution of rainfall network is quantified by the nearest neighbor index and the error analysisbetween the ground rainfall and radar rainfall is analyzed by G/R ratio. The suggested method is applied to Pyongchang river basin.
As a result, it is found that the error between ground rainfall data and radar rainfall data is the smaller in the case of the best spatialdistribution than the worst spatial distribution. This result implies that the spatial distribution is more important factor in the accuracyof radar correction. The achievement of study is judged that it would be able to contribute the quality improvement of rainfall data bythe efficient operation of rainfall network in limited circumstance of weather stations, along with the qualitative improvement of floodwarning system.
| Translated title of the contribution | Evaluation for the Correction of Radar Rainfall Due to the Spatial Distribution of Raingauge Network |
|---|---|
| Original language | Korean |
| Pages (from-to) | 337-345 |
| Number of pages | 9 |
| Journal | 한국방재학회논문집 |
| Volume | 14 |
| Issue number | 6 |
| DOIs | |
| State | Published - Dec 2014 |