气候变化领域集成服务门户(CCPortal): Marine heat waves: Characterizing a major climate impact in the Mediterranean

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DOI	10.1016/j.scitotenv.2022.160621
	Marine heat waves: Characterizing a major climate impact in the Mediterranean
	Pastor, F.; Khodayar, S.
发表日期	2023
ISSN	0048-9697
EISSN	1879-1026
卷号	861
英文摘要	Marine heat waves (MHW), considered as persistent and spatially extensive sea surface temperature (SST) anomalies, have emerged as one of the global change-induced high impact events on the oceans. The study of MHWs received significant progress in recent years, although many unknowns remain. One of the most notable weaknesses is related to the absence of a universally established definition that would allow better intercomparison of results. It is our aim to contribute to this debate by considering the spatial extent to define a MHW. By applying this hypothesis to a relatively small, but complex, basin such as the Mediterranean, MHWs have been characterized and long-term trends assessed from SST satellite data analysis. Our results show that the inclusion of a minimum area threshold, 5 % of the area basin, greatly reduces the population of MHW events by not considering local SST anomalies that do not constitute a MHW event. A trend to more frequent, intense, and longer MHWs is found in the 1982-2021 period in the Mediterranean. In the spatial characterization and long-term trend analysis, regional differences were apparent. Results evidenced variations in MHWs characteristics and trends across the different sub-basins evidencing the fact that, even in a relatively small basin such as the Mediterranean, significant regional differences make it necessary to include a spatial perspective in the studies, beyond purely local analysis at each observation point in a large basin or even in the global ocean. Regarding the characterization of MHWs and trend analysis in the Mediterranean basin, a growing trend has been found in terms of frequency, duration, and intensity that accelerated since 2000 and especially in the last decade, pointing not just to a steady intensification and higher frequency of MHWs but to the emergence of a new set of more intense, long-lasting and spatially extensive MHWs in the recent years.
英文关键词	Marine heatwaves; Global warming; Climate change; Sea surface temperature; Impact
语种	英语
WOS研究方向	Environmental Sciences
WOS类目	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000997178800001
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/281308
推荐引用方式 GB/T 7714	Pastor, F.,Khodayar, S.. Marine heat waves: Characterizing a major climate impact in the Mediterranean[J],2023,861.
APA	Pastor, F.,&Khodayar, S..(2023).Marine heat waves: Characterizing a major climate impact in the Mediterranean.SCIENCE OF THE TOTAL ENVIRONMENT,861.
MLA	Pastor, F.,et al."Marine heat waves: Characterizing a major climate impact in the Mediterranean".SCIENCE OF THE TOTAL ENVIRONMENT 861(2023).