Characteristics of Quasi-Linear Convective Systems over Bali Based on Weather Radar Observations during January-March 2025
DOI:
https://doi.org/10.29303/goescienceed.v7i4.3048Keywords:
QLCS Formation, System Propagation, Vertical Wind Shear, C-Band Weather Radar, Tropical Convective SystemsAbstract
Quasi-Linear Convective Systems (QLCSs) are linear convective systems capable of producing significant weather over tropical regions, yet their characteristics over Bali remain poorly documented. This study aimed to identify the spatial and temporal characteristics, formation and dissipation types, propagation, and vertical wind shear (VWS) associated with QLCS events over Bali during January-March 2025 using C-band weather radar observations from BMKG Denpasar. QLCS events were identified based on the Lombardo and Colle criteria, while their characteristics were analyzed using the CMAX, CTR, and VSHEAR products. Six QLCS events were identified during the study period. Most systems initiated over the Coastal Ocean, matured over the Coastal Plain, and dissipated over the Upslope region. The dominant formation types were BB and BA, whereas NU2 was the most frequent dissipation type. Most QLCSs propagated eastward with fast-moving characteristics, while VWS ranged from weak to strong. These findings provide a comprehensive characterization of QLCSs over Bali and offer a useful reference for future weather radar-based studies of tropical maritime convective systems.
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