DOI: 10.1073/pnas.2000851117
论文题名: Slower nutrient stream suppresses subarctic atlantic ocean biological productivity in global warming
作者: Whitt D.B. ; Jansen M.F.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2020
卷: 117, 期: 27 起始页码: 15504
结束页码: 15510
语种: 英语
英文关键词: Biogeochemistry
; Global warming
; Ocean circulation
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
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/164139
Appears in Collections: 气候变化与战略
There are no files associated with this item.
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
Recommended Citation:
Whitt D.B.,Jansen M.F.. Slower nutrient stream suppresses subarctic atlantic ocean biological productivity in global warming[J]. Proceedings of the National Academy of Sciences of the United States of America,2020-01-01,117(27)