Na et al. (2025) Administrative-District-Level Risk Indices for Typhoon-Induced Wind and Rainfall: Case Studies in Seoul and Busan, South Korea

⚠️ Warning: This summary was generated from the abstract only, as the full text was not available.

Identification

• Journal: Atmosphere
• Year: 2025
• Date: 2025-12-10
• Authors: Hana Na, Woo‐Sik Jung
• DOI: 10.3390/atmos16121392

Research Groups

Not explicitly mentioned in the provided text.

Short Summary

This study developed a district-level typhoon hazard framework for South Korea by integrating high-resolution meteorological fields with structural and hydrological vulnerability indicators, revealing a strong coastal-inland hazard gradient and providing an operational foundation for localized early warning.

Objective

• To develop a district-level typhoon hazard framework for South Korea to support impact-based early warning by integrating high-resolution meteorological fields with structural and hydrological vulnerability indicators.

Study Configuration

• Spatial Scale: Nationwide across 250 districts in South Korea, with sub-district mapping for localized hotspots.
• Temporal Scale: Event-based (typhoon events), focusing on instantaneous gust wind intensity (3 s) and probable maximum precipitation.

Methodology and Data

• Models used: Framework integrating high-resolution meteorological fields with structural and hydrological vulnerability indicators; statistical classification using district-specific percentile thresholds (consistent with THIRA methodology).
• Data sources: High-resolution meteorological fields (for 3 s gust wind intensity and probable maximum precipitation), building-age fragility data, permeability data, river-network density data.

Main Results

• Typhoon-induced hazards exhibit strong spatial heterogeneity across South Korea, with a pronounced coastal–inland gradient.
• Mean Strong Wind Risk Index (SWI) and Heavy Rainfall Risk Index (HRI) values in Busan were approximately 1.9 and 6.3 times higher than those in Seoul, respectively.
• Sub-district mapping identified localized hotspots driven by topographic exposure and structural vulnerability.
• Hazard levels were classified into four categories (Attention, Caution, Warning, Danger) using statistically derived, district-specific percentile thresholds.

Contributions

• Provides an operational foundation for integrating localized hazard interpretation into Korea’s Typhoon Ready System (TRS).
• Strengthens the scientific basis for adaptive, evidence-based early warning and climate-resilient disaster-risk governance.
• Establishes statistically derived, region-specific thresholds for typhoon hazard classification.

Funding

Not explicitly mentioned in the provided text.

Citation

@article{Na2025AdministrativeDistrictLevel,
  author = {Na, Hana and Jung, Woo‐Sik},
  title = {Administrative-District-Level Risk Indices for Typhoon-Induced Wind and Rainfall: Case Studies in Seoul and Busan, South Korea},
  journal = {Atmosphere},
  year = {2025},
  doi = {10.3390/atmos16121392},
  url = {https://doi.org/10.3390/atmos16121392}
}