气候变化领域集成服务门户(CCPortal): Major role of particle fragmentation in regulating biological sequestration of CO2 by the oceans

CCPortal

DOI	10.1126/science.aay1790
	Major role of particle fragmentation in regulating biological sequestration of CO2 by the oceans
	Briggs N.; Dall'Olmo G.; Claustre H.
发表日期	2020
ISSN	0036-8075
起始页码	791
结束页码	793
卷号	367 期号:6479
英文摘要	A critical driver of the ocean carbon cycle is the downward flux of sinking organic particles, which acts to lower the atmospheric carbon dioxide concentration. This downward flux is reduced by more than 70% in the mesopelagic zone (100 to 1000 meters of depth), but this loss cannot be fully accounted for by current measurements. For decades, it has been hypothesized that the missing loss could be explained by the fragmentation of large aggregates into small particles, although data to test this hypothesis have been lacking. In this work, using robotic observations, we quantified total mesopelagic fragmentation during 34 high-flux events across multiple ocean regions and found that fragmentation accounted for 49 ± 22% of the observed flux loss. Therefore, fragmentation may be the primary process controlling the sequestration of sinking organic carbon. © 2020 American Association for the Advancement of Science. All rights reserved.
关键词	carbon dioxide air-sea interaction carbon cycle carbon dioxide carbon flux carbon sink mesopelagic zone organic carbon algal bloom Article carbon cycle carbon sequestration carbon sink chlorophyll content climate fragmentation reaction ocean environment priority journal
语种	英语
来源机构	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/133720
推荐引用方式 GB/T 7714	Briggs N.,Dall'Olmo G.,Claustre H.. Major role of particle fragmentation in regulating biological sequestration of CO2 by the oceans[J]. Science,2020,367(6479).
APA	Briggs N.,Dall'Olmo G.,&Claustre H..(2020).Major role of particle fragmentation in regulating biological sequestration of CO2 by the oceans.,367(6479).
MLA	Briggs N.,et al."Major role of particle fragmentation in regulating biological sequestration of CO2 by the oceans".367.6479(2020).