|
KMID : 1024520150240040525
|
|
Journal of the Environmental Sciences
2015 Volume.24 No. 4 p.525 ~ p.540
|
|
|
A Study on the Improvement in Local Gauge Correction Method
|
|
Kim Kwang-Ho
Kim Min-Seong
Seo Seong-Woon
Kim Park-Sa
Kang Dong-Hwan
Kwon Byung-Hyuk
|
|
|
Abstract
|
|
|
|
Spatial distribution of precipitation has been estimated based on the local gauge correction (LGC) with a fixed inverse distance weighting (IDW), which is not optimized in taking effective radius into account depending on the radar error. We developed an algorithm, improved local gauge correction (ILGC) which eliminates outlier in radar rainrate errors and optimize distance power for IDW. ILGC was statistically examined the hourly cumulated precipitation from weather for the heavy rain events. Adjusted radar rainfall from ILGC is improved to 50% compared with unadjusted radar rainfall. The accuracy of ILGC is higher to 7% than that of LGC, which resulted from a positive effect of the optimal algorithm on the adjustment of quantitative precipitation estimation from weather radar.
|
|
|
KEYWORD
|
|
|
Local gauge correction, Weather radar, Rain gauge, Variogram, Quantitative precipitation estimation
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|