Quaque et al. (2026) Projected intensification of precipitation characteristics and meteorological drought and wetness conditions in Accra Ghana

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Identification

• Journal: Discover Environment
• Year: 2026
• Date: 2026-09-11
• Authors: Johnson Quaque, Yongwon Seo
• DOI: 10.1007/s44274-026-01038-y

Research Groups

• University of Ghana Department of Geography and Planning
• Korea Meteorological Administration

Short Summary

This study assesses historical and future precipitation characteristics in Accra, Ghana using the KACE model under SSP1-2.6 and SSP5-8.5 climate scenarios, providing valuable information for climate adaptation planning and water-resource management.

Objective

• Investigate the performance of the KACE model in reproducing historical precipitation patterns in Accra and its ability to project future changes under different emission scenarios

Study Configuration

• Spatial Scale: City-scale (Accra, Ghana)
• Temporal Scale: 1982–2014 (historical), 2015–2040, 2041–2070, and 2071–2100 (future)

Methodology and Data

• Models used: Korea Meteorological Administration Advanced Community Earth System (KACE) model
• Data sources: Observed precipitation data for 1982–2014, climate scenarios SSP1-2.6 and SSP5-8.5

Main Results

• The KACE model reproduces the general historical precipitation pattern in Accra, although differences remain in the magnitude of some extreme events.
• Future projections indicate continued variability in SPI, CDD, CWD, Rx1day, Rx5- day, and SDII across emission scenarios and future periods.
• Increased recurrence and persistence of dry and wet events at longer time scales are projected under both SSP1-2.6 and SSP5-8.5.

Contributions

• This study provides valuable information for climate adaptation planning, flood-risk reduction, urban drainage design, and sustainable water-resource management in Accra.
• The results highlight the importance of considering multiple climate scenarios and indices when assessing future precipitation characteristics.

Funding

• This research was supported by the Korea Meteorological Administration (KMA) and the University of Ghana.

Citation

@article{Quaque2026Projected,
  author = {Quaque, Johnson and Seo, Yongwon},
  title = {Projected intensification of precipitation characteristics and meteorological drought and wetness conditions in Accra Ghana},
  journal = {Discover Environment},
  year = {2026},
  doi = {10.1007/s44274-026-01038-y},
  url = {https://doi.org/10.1007/s44274-026-01038-y}
}