Affiliation:
1. Central University of Rajasthan
Abstract
AbstractCloudbursts are powerful precipitation events that cause flash floods and landslides over a 20 km2 area. Three cloudburst events on July 16, 17, and 19 in three Uttarakhand locations are examined in this study. The Weather Research and Forecasting (WRF) model was used to simulate three cloudburst occurrences at a timestep of 18s on a nested domain of 9 km and 3 km resolutions from 1° by 1° spatial resolution NCEP-FNL data. IMDAA and NGFS data were compared. In the three studied scenarios, all simulations forecast 100 mm rainfall and considerable vertical velocity. Maximum rainfall and vertical velocity are somewhat shifted in two situations. Based on GPM-IMERG rainfall observations, each configuration was evaluated using deterministic and categorical metrics. For each timestep's 5 cm rainfall threshold, Equitable Threat Score and False Threat Score were calculated. The analysis indicated that the third configuration had the most skill.
Publisher
Research Square Platform LLC
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