Simulation and projection of summer convective afternoon rainfall activities over southeast asia in CMIP6 models

Wan Ru Huang, Ya Hui Chang, Liping Deng, Pin Yi Liu

研究成果: 雜誌貢獻期刊論文同行評審

摘要

Convective afternoon rainfall (CAR) events, which tend to generate a local rainfall typically in the afternoon, are among the most frequently observed local weather patterns over Southeast Asia during summer. Using satellite precipitation estimations as an observational base for model evaluation, this study examines the applicability of 10 global climate models provided by phase 6 of the Coupled Model Intercomparison Project (CMIP6) in simulating the CAR activities over Southeast Asia. Analyses also focus on exploring the characteristics and maintenance mechanisms of related projections of CAR activities in the future.Our analyses of the historical simulation indicate that EC-Earth3 and EC-Earth3-Veg are the two best models for simulating CAR activities (including amount, frequency, and intensity) over Southeast Asia. Analyses also demonstrate that EC-Earth3 and EC-Earth3-Veg outperform their earlier version (i.e., EC-Earth) in CMIP5 owing to the improvement in its spatial resolution in CMIP6. For future projections, our examinations of the differences in CAR activities between the future (2071-2100, under the SSP858 run) and the present (1985-2014, under the historical run) indicate that CAR events will become fewer but more intense over most land areas of Southeast Asia. Possible causes of the projected increase (decrease) in CAR intensity (frequency) are attributed to the projected increase (decrease) in the local atmospheric humidity (sea breeze convergence and daytime thermal instability). These findings provide insight into how the local weather/climate over Southeast Asia is likely to change under global warming.

原文英語
頁(從 - 到)5001-5016
頁數16
期刊Journal of Climate
34
發行號12
DOIs
出版狀態已發佈 - 2021 6月 15

ASJC Scopus subject areas

  • 大氣科學

指紋

深入研究「Simulation and projection of summer convective afternoon rainfall activities over southeast asia in CMIP6 models」主題。共同形成了獨特的指紋。

引用此