气候变化领域集成服务门户(CCPortal): Warming of the Kuroshio Current Over the Last Four Decades has Intensified the Meiyu-Baiu Rainband

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DOI	10.1029/2023GL107021
	Warming of the Kuroshio Current Over the Last Four Decades has Intensified the Meiyu-Baiu Rainband
	Qiao, Yu-Xiang; Nakamura, Hirohiko; Tomita, Tomohiko
发表日期	2024
ISSN	0094-8276
EISSN	1944-8007
起始页码	51
结束页码	2
卷号	51 期号:2
英文摘要	In recent decades, rise of sea surface temperature (SST) in the Kuroshio region of the East China Sea (ECS), which is associated with global warming, has attracted considerable attention. Despite its relevance to air-sea interaction phenomena, the atmospheric consequences of this SST increase remain largely unexplored. Using the ERA5 reanalysis data set in conjunction with a moisture budget analysis, we found that during 1979-2022, warming in the ECS-Kuroshio has contributed to the intensification of the East Asian Meiyu-Baiu rainband in June. This intensification is attributed to augmented wind convergence in the low-level free troposphere (950-700 hPa). Importantly, the atmospheric responses to ECS-Kuroshio warming penetrated the deep troposphere (to approximately 300 hPa), suggesting an enhancement of deep convection. Furthermore, ECS-Kuroshio warming likely strengthened the overlying atmospheric low pressure, resulting in wind convergence enhancement. The findings clarified the important role of the ECS-Kuroshio in driving East Asian climate change amid global warming. In response to global warming, East Asian summer precipitation is increasing along with an increase in extreme precipitation events, which poses a significant threat to agriculture and economic development. Understanding the mechanisms underlying the increased precipitation trend in East Asia is crucial for sustainable human development in this region. The findings of this study revealed that East Asian precipitation induced by the Meiyu-Baiu rainband has intensified continuously during the past four decades, particularly in the marine areas around the East China Sea (ECS) and the south of Japan. We further established that the continuous increase in sea surface temperature over the Kuroshio in the ECS, which was related to global warming, strengthened the atmospheric low-pressure system overlying the current, contributing to an increase in rainfall around the ECS. The findings of this study highlighted the important role of the Kuroshio Current in influencing climate change in East Asia. The Meiyu-Baiu rainband in June intensified over the marine areas around the Kuroshio and south of Japan during 1979-2022 The intensified Meiyu-Baiu rainband was caused mainly by the wind convergence accompanied by enhanced deep convection Kuroshio warming in the East China Sea likely intensified the Meiyu-Baiu rainband by a pressure adjustment mechanism
英文关键词	air-sea interaction; intensified Meiyu-Baiu rainband; convective precipitation; Kuroshio warming; east China sea; multidecadal trend
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:001153411200001
来源期刊	GEOPHYSICAL RESEARCH LETTERS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/292237
作者单位	Kagoshima University; Kumamoto University
推荐引用方式 GB/T 7714	Qiao, Yu-Xiang,Nakamura, Hirohiko,Tomita, Tomohiko. Warming of the Kuroshio Current Over the Last Four Decades has Intensified the Meiyu-Baiu Rainband[J],2024,51(2).
APA	Qiao, Yu-Xiang,Nakamura, Hirohiko,&Tomita, Tomohiko.(2024).Warming of the Kuroshio Current Over the Last Four Decades has Intensified the Meiyu-Baiu Rainband.GEOPHYSICAL RESEARCH LETTERS,51(2).
MLA	Qiao, Yu-Xiang,et al."Warming of the Kuroshio Current Over the Last Four Decades has Intensified the Meiyu-Baiu Rainband".GEOPHYSICAL RESEARCH LETTERS 51.2(2024).