DOI: 10.1002/2016GL070501
论文题名: Iron sources and pathways into the Pacific Equatorial Undercurrent
作者: Qin X. ; Menviel L. ; Sen Gupta A. ; van Sebille E.
刊名: Geophysical Research Letters
ISSN: 0094-8603
EISSN: 1944-8334
出版年: 2016
卷: 43, 期: 18 起始页码: 9843
结束页码: 9851
语种: 英语
英文关键词: eddy-resolving model
; El Niño
; Lagrangian
; New Guinea Coastal Undercurrent
; New Ireland Coastal Undercurrent
Scopus关键词: Lagrange multipliers
; Nickel
; Biogeochemical
; Eastern equatorial Pacific
; Equatorial undercurrents
; Ireland
; Iron concentrations
; Iron distribution
; Lagrangian
; New Guinea coastal undercurrent
; Iron
英文摘要: Using a novel observationally constrained Lagrangian iron model forced by outputs from an eddy-resolving biogeochemical ocean model, we examine the sensitivity of the Equatorial Undercurrent (EUC) iron distribution to EUC source region iron concentrations. We find that elevated iron concentrations derived from New Guinea Coastal Undercurrent (NGCU) alone is insufficient to explain the high concentrations observed in the EUC. In addition, due to the spread in transit times, interannual NGCU iron pulses are scavenged, diluted, or eroded, before reaching the eastern equatorial Pacific. With an additional iron source from the nearby New Ireland Coastal Undercurrent, EUC iron concentrations become consistent with observations. Furthermore, as both the New Guinea and New Ireland Coastal Undercurrents strengthen during El Niño, increased iron input into the EUC can enhance the iron supply into the eastern equatorial Pacific. Notably, during the 1997/1998 El Niño, this causes a simulated 30% iron increase at a 13 month lag. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84990861127&doi=10.1002%2f2016GL070501&partnerID=40&md5=e3b167149b99c06c2f8283b2b90c31e2
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9566
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Climate Change Research Centre and ARC Centre of Excellence on Climate System Science, University of New South Wales, Sydney, NSW, Australia
Recommended Citation:
Qin X.,Menviel L.,Sen Gupta A.,et al. Iron sources and pathways into the Pacific Equatorial Undercurrent[J]. Geophysical Research Letters,2016-01-01,43(18).