气候变化领域集成服务门户(CCPortal): A Global, Multiproduct Analysis of Coastal Marine Heatwaves: Distribution, Characteristics, and Long-Term Trends

CCPortal

DOI	10.1029/2020JC016708
	A Global, Multiproduct Analysis of Coastal Marine Heatwaves: Distribution, Characteristics, and Long-Term Trends
	Marin M.; Feng M.; Phillips H.E.; Bindoff N.L.
发表日期	2021
ISSN	21699275
卷号	126 期号:2
英文摘要	Major marine heatwave (MHW) events have caused catastrophic impacts on coastal marine ecosystems. However, to date there has not been a global assessment of MHWs in coastal areas where rich marine ecosystems are at risk. Here, we combine four satellite Sea Surface Temperature (SST) products to quantify the distribution, characteristics, and decadal trend of coastal MHWs, using an ensemble approach. Hotspots of MHW stress, defined as yearly cumulative intensity, were found to be concentrated in mid latitude coasts like the Mediterranean Sea, Japan Sea, and Tasman Sea, as well as the north-eastern coast of the United States. We found a global increase in coastal MHW frequency and duration during the past 25 years by 1–2 events per decade and 5–10 days per decade, respectively, with regional distribution closely related to decadal climate variability. Increases in frequency and duration of MHWs has led to large increases of cumulative intensity and yearly cumulative intensity, particularly in mid-latitudes and hotspot regions. Long-term changes in mean SST were the main driver of the observed trends of coastal MHWs, while internal variability was important for explaining local decreases in MHW metrics such as along the south-eastern Pacific coast. MHW average metrics and trends were consistent across all four products used in this analysis, giving high confidence in the results. However, important differences between products were observed for MHW mean intensity, which was well correlated to SST variability, suggesting sensitivity of this metric to the specific SST data set and demonstrating a need for an ensemble approach to MHW analysis. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	coastal; ensemble approach; internal variability; long-term trends; marine heatwaves (MHW)
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186480
作者单位	Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS, Australia; ARC Centre of Excellence for Climate Extremes, Hobart, TAS, Australia; CSIRO Oceans and Atmosphere, Indian Ocean Marine Research Centre, Crawley, WA, Australia; Centre for Southern Hemisphere Oceans Research, Hobart, TAS, Australia; Australian Antarctic Program Partnership, Hobart, TAS, Australia; CSIRO Oceans and Atmosphere, Hobart, TAS, Australia
推荐引用方式 GB/T 7714	Marin M.,Feng M.,Phillips H.E.,et al. A Global, Multiproduct Analysis of Coastal Marine Heatwaves: Distribution, Characteristics, and Long-Term Trends[J],2021,126(2).
APA	Marin M.,Feng M.,Phillips H.E.,&Bindoff N.L..(2021).A Global, Multiproduct Analysis of Coastal Marine Heatwaves: Distribution, Characteristics, and Long-Term Trends.Journal of Geophysical Research: Oceans,126(2).
MLA	Marin M.,et al."A Global, Multiproduct Analysis of Coastal Marine Heatwaves: Distribution, Characteristics, and Long-Term Trends".Journal of Geophysical Research: Oceans 126.2(2021).