독립형 낙뢰 경보시스템의 성능 개선을 위한 경보 조건

Abstract

As a result of previous studies [1-2], the warning performances without atmospheric electric field (EF) data are examined by using only intra-cloud (IC) discharges, and cloud-to-ground (CG) strikes data provided by a stand-alone lightning warning system (LWS) during two summers. The warning performances were evaluated by the warning statistics with probability of detection (POD), false alarm ratio (FAR) and critical success index (CSI). Upon conclusion of this study, it was found that removal of EF data from warning conditions decreased FAR to 82%, and increased CSI to 171%, POD to 89% in comparison to the prior study[1]. Therefore, these results mean that IC and CG without EF data were beneficial to an increase in warning performances. However, the stand-alone LWS intended to trigger an only prior warning is not possible to make effective alerts (EA) because there is no effective lead time (LT). Hence, it has still been required to develop the new LWS proposed in the previous study [1] for triggering EA.