Proceedings of the Korea Water Resources Association Conference (한국수자원학회:학술대회논문집)

Korea Water Resources Association (한국수자원학회)
권호 표지

Selection of dominant meteorological indices related with heavy rainfall caused by BAIU activity

  • Koji, Nishiyama (Research associate, Faculty of Engineering, Kyushu University) ;
  • Yoshitaka, I (Master student, Faculty of Engineering, Kyushu University) ;
  • Kenji, Jinno (Faculty of Engineering, Kyushu University) ;
  • Akira, Kawamura (Faculty of Engineering, Kyushu University)
  • Published : 2003.05.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, paying much attention to notable features obtained from spatial distributions of strongly related indices (precipitable water, convergence of air, convective available potential energy) with precipitation, fatal problems in selecting strongly related indices with observed precipitation in a BAIU season were discussed. These results showed spatial distribution of a predicted index provided alternative and physically consistent interpretation for selecting dominant index for heavy rainfall even if the predicted index did not correlate with observed rainfall at a specific observational point as confirmed by the features of CONV (Convergence) or even if it correlated with observed rainfall as confirmed by those of PW (Precipitable Water). Therefore, dominant meteorological indices of heavy rainfall should be selected according to physically evidenced interpretation on features of spatial distributions of indices, and physically and statistically consistent relationship should be built up.

Keywords