气候变化领域集成服务门户(CCPortal): Slower nutrient stream suppresses subarctic atlantic ocean biological productivity in global warming

CCPortal

DOI	10.1073/pnas.2000851117
	Slower nutrient stream suppresses subarctic atlantic ocean biological productivity in global warming
	Whitt D.B.; Jansen M.F.
发表日期	2020
ISSN	0027-8424
起始页码	15504
结束页码	15510
卷号	117 期号:27
英文摘要	Earth system models (ESMs) project that global warming suppresses biological productivity in the Subarctic Atlantic Ocean as increasing ocean surface buoyancy suppresses two physical drivers of nutrient supply: vertical mixing and meridional circulation. However, the quantitative sensitivity of productivity to surface buoyancy is uncertain and the relative importance of the physical drivers is unknown. Here, we present a simple predictive theory of how mixing, circulation, and productivity respond to increasing surface buoyancy in 21st-century global warming scenarios. With parameters constrained by observations, the theory suggests that the reduced northward nutrient transport, owing to a slower ocean circulation, explains the majority of the reduced productivity in a warmer climate. The theory also informs present-day biases in a set of ESM simulations as well as the physical underpinnings of their 21st-century projections. Hence, this theoretical understanding can facilitate the development of improved 21st-century projections of marine biogeochemistry and ecosystems. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Biogeochemistry; Global warming; Ocean circulation
语种	英语
scopus关键词	article; Atlantic Ocean; biogeochemistry; climate; ecosystem; greenhouse effect; human; nutrient; productivity; simulation; theoretical study; adverse event; aquatic species; Atlantic Ocean; atmosphere; chemistry; ecosystem; ecosystem monitoring; greenhouse gas; metabolism; radiation response; sunlight; theoretical model; water flow; nitric acid derivative; sea water; Aquatic Organisms; Atlantic Ocean; Atmosphere; Earth, Planet; Ecological Parameter Monitoring; Ecosystem; Global Warming; Greenhouse Gases; Models, Theoretical; Nitrates; Nutrients; Seawater; Sunlight; Water Movements
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160891
作者单位	Whitt, D.B., Climate and Global Dynamics Laboratory, National Center for Atmospheric Research, Boulder, CO 80307, United States; Jansen, M.F., Department of the Geophysical Sciences, University of Chicago, Chicago, IL 60637, United States
推荐引用方式 GB/T 7714	Whitt D.B.,Jansen M.F.. Slower nutrient stream suppresses subarctic atlantic ocean biological productivity in global warming[J],2020,117(27).
APA	Whitt D.B.,&Jansen M.F..(2020).Slower nutrient stream suppresses subarctic atlantic ocean biological productivity in global warming.Proceedings of the National Academy of Sciences of the United States of America,117(27).
MLA	Whitt D.B.,et al."Slower nutrient stream suppresses subarctic atlantic ocean biological productivity in global warming".Proceedings of the National Academy of Sciences of the United States of America 117.27(2020).