气候变化领域集成服务门户(CCPortal): Projected amplification of summer marine heatwaves in a warming Northeast Pacific Ocean

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DOI	10.1038/s43247-024-01212-1
	Projected amplification of summer marine heatwaves in a warming Northeast Pacific Ocean
	Athanase, Marylou; Sanchez-Benitez, Antonio; Goessling, Helge F.; Pithan, Felix; Jung, Thomas
发表日期	2024
EISSN	2662-4435
起始页码	5
结束页码	1
卷号	5 期号:1
英文摘要	Marine heatwaves are expected to become more frequent, intense, and longer-lasting in a warming world. However, it remains unclear whether feedback processes could amplify or dampen extreme ocean temperatures. Here we impose the observed atmospheric flow in coupled climate simulations to determine how the record-breaking 2019 Northeast Pacific marine heatwave would have unfolded in preindustrial times, and how it could unravel in a +4 degrees C warmer world compared to present-day conditions. We find that air-sea interactions, involving reductions in clouds and ocean mixed-layer depth and air advection from fast-warming subpolar regions, modulate warming rates within the marine heatwave. In a +4 degrees C warmer climate, global oceans are +1.9 degrees C warmer than present levels, and regional mean warming in the Northeast Pacific can reach +2.3-2.7 +/- 0.25 degrees C. Our identified feedback processes are projected to further amplify the intensity and spatial extent of analogous Northeast Pacific summer marine heatwaves beyond those thresholds, with a warming reaching +2.9 +/- 0.15 degrees C above present levels. Such an event-specific amplification would place even greater stress on marine ecosystems and fisheries. Future climate change can trigger air-sea feedbacks in the Northeast Pacific, further raising the intensity and spatial extent of summer marine heatwaves beyond the long-term warming, according to model simulations using a novel storyline approach.
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:001149876900001
来源期刊	COMMUNICATIONS EARTH & ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/296599
作者单位	Helmholtz Association; Alfred Wegener Institute, Helmholtz Centre for Polar & Marine Research; University of Bremen
推荐引用方式 GB/T 7714	Athanase, Marylou,Sanchez-Benitez, Antonio,Goessling, Helge F.,et al. Projected amplification of summer marine heatwaves in a warming Northeast Pacific Ocean[J],2024,5(1).
APA	Athanase, Marylou,Sanchez-Benitez, Antonio,Goessling, Helge F.,Pithan, Felix,&Jung, Thomas.(2024).Projected amplification of summer marine heatwaves in a warming Northeast Pacific Ocean.COMMUNICATIONS EARTH & ENVIRONMENT,5(1).
MLA	Athanase, Marylou,et al."Projected amplification of summer marine heatwaves in a warming Northeast Pacific Ocean".COMMUNICATIONS EARTH & ENVIRONMENT 5.1(2024).