The role of sea surface temperature in shaping the characteristics of future convective afternoon rainfall in Taiwan

Wan Ru Huang*, Yu Tang Chien, Chao Tzuen Cheng, Huang Hsiung Hsu, Suranjith Bandara Koralegedara

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

1 引文 斯高帕斯(Scopus)

摘要

Convective afternoon rainfall (CAR) is a significant summer rainfall feature in Taiwan. This study investigates the projected uncertainties in summer CAR in Taiwan, using a dynamical downscaling approach with the Weather Research and Forecasting Model (WRF) and the High-Resolution Atmospheric Model (HiRAM). The projections were driven by four different sea surface temperature (SST) categories derived from CMIP5 model simulations under the RCP8.5 scenario. All projections indicate a reduced frequency but increased intensity of CAR over Taiwan by the end of the 21st century. However, notable differences in the degree of CAR changes were observed among simulations with varying degrees of Pacific SST warming. These variations in potential future changes in CAR frequency and intensity can be attributed to the variations in daytime thermal instability, local inland wind convergence, and moisture flux convergence over Taiwan. Furthermore, this study explored the linkage between local thermodynamic conditions and projected large-scale circulation patterns.

原文英語
文章編號198
期刊npj Climate and Atmospheric Science
6
發行號1
DOIs
出版狀態已發佈 - 2023 12月

ASJC Scopus subject areas

  • 全球和行星變化
  • 環境化學
  • 大氣科學

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