气候变化领域集成服务门户(CCPortal): Global oceans suffer extreme heatwaves intensifying since the early 21st century: A new comprehensive index

CCPortal

DOI	10.1016/j.ecolind.2024.112069
	Global oceans suffer extreme heatwaves intensifying since the early 21st century: A new comprehensive index
	Chen, Yingliang; Su, Hua; Yan, Xiao-Hai; Zhang, Hongsheng; Wang, Yunpeng
发表日期	2024
ISSN	1470-160X
EISSN	1872-7034
起始页码	162
卷号	162
英文摘要	As a result of global warming, major ocean basins have witnessed an increase in the number of extreme warm events and a decrease in the number of extreme cold events, increasing the number of marine heatwave (MHW) events. Previous quantification of MHW events has been limited to simple single metrics, which can only recognize some characteristics from a particular aspect. Here, we propose a new marine Heat Wave Comprehensive Index (HWCI) by fusing multiple metrics to characterize the scalable cumulative intensity of MHWs, which exhibits excellent identification reliability and superiority to effectively monitor the evolutionary patterns of various levels of MHW events. We find that five levels of global MHW events have presented an obvious spatial expansion and temporal enhancement pattern since the early 21st century, with the obvious spatial contraction (32.98 %) of weak events followed by the expansion (19.82 %) of extreme events at the highest growth rate of 0.07, primarily in the mid-low-latitude oceans and the Arctic. The results demonstrate that extreme MHW events dominate global MHW evolution patterns and that the expansion and intensification of such episodes have major implications for the event distribution and level structure. The new indicator is promising for directly measuring and identifying MHWs, and contributes to a more comprehensive understanding of the evolution of MHWs in the context of global climate change.
英文关键词	Marine heat wave (MHW); Heat wave comprehensive index (HWCI); Climate extremes; Global ocean warming
语种	英语
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Environmental Sciences
WOS记录号	WOS:001224778800001
来源期刊	ECOLOGICAL INDICATORS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/297749
作者单位	Fuzhou University; Fuzhou University; University of Delaware; University of Hong Kong; Chinese Academy of Sciences; Guangzhou Institute of Geochemistry, CAS
推荐引用方式 GB/T 7714	Chen, Yingliang,Su, Hua,Yan, Xiao-Hai,et al. Global oceans suffer extreme heatwaves intensifying since the early 21st century: A new comprehensive index[J],2024,162.
APA	Chen, Yingliang,Su, Hua,Yan, Xiao-Hai,Zhang, Hongsheng,&Wang, Yunpeng.(2024).Global oceans suffer extreme heatwaves intensifying since the early 21st century: A new comprehensive index.ECOLOGICAL INDICATORS,162.
MLA	Chen, Yingliang,et al."Global oceans suffer extreme heatwaves intensifying since the early 21st century: A new comprehensive index".ECOLOGICAL INDICATORS 162(2024).