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This analysis aims to understand the characteristics and mechanisms of a severe rainfall event in Southwest China.

March 7, 2026AtmosphereOpen Access

Observational Analysis of a Southwest Vortex-Induced Severe Rainfall Event Triggering Fatal Landslides over Southwest China in 2024

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This analysis aims to understand the characteristics and mechanisms of a severe rainfall event in Southwest China.
Utilized high-resolution surface observations and radar reflectivity data
Employed ERA5 reanalysis data for synoptic-scale analysis
Focused on spatiotemporal characteristics of the rainfall event
Analyzed the role of mesoscale convective systems and atmospheric conditions
Identified two primary precipitation centers in distinct geographical subregions
Established that low-level convergence and vertical advection intensified the vortex during initial rainfall
Observed that horizontal vorticity advection sustained the rainfall in the second subregion
Noted the significant societal impacts of landslides triggered by the rainfall

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Observational analysis investigates rainfall’s characteristics and mechanisms in Southwest China, indicating significant societal impacts.

Zhang et al. (2026) studied this question.

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Observational analysis investigates rainfall’s characteristics and mechanisms in Southwest China, indicating significant societal impacts.