DOI: 10.1002/2014GL062040
论文题名: Correcting oceanic O<inf>2</inf>/Ar-net community production estimates for vertical mixing using N<inf>2</inf>O observations
作者: Cassar N. ; Nevison C.D. ; Manizza M.
刊名: Geophysical Research Letters
ISSN: 0094-9433
EISSN: 1944-9164
出版年: 2014
卷: 41, 期: 24 起始页码: 8961
结束页码: 8970
语种: 英语
英文关键词: N2 O
; net community production
; O2 /Ar
; oxygen
Scopus关键词: Earth sciences
; Geophysics
; Oxygen
; Deepwater
; Gas flux
; Keypoints
; Net community productions
; Ocean observing systems
; Proof of concept
; Southern ocean
; Vertical mixing
; Mixing
; composite
; deep water
; gas exchange
; net primary production
; nitrogen dioxide
; oxygen
; simulation
; testing method
; tracer
; vertical mixing
英文摘要: The O2 /Ar approach has become a key method to estimate oceanic net community production (NCP). However, in some seasons and regions of the ocean, strong vertical mixing of O2 -depleted deepwater introduces a large error into O2 /Ar-derived NCP estimates. In these cases, undersaturated-O2 /Ar observations have for all intents and purposes been ignored. We propose to combine underway O2 /Ar and N2 O observations into a composite tracer that is conservative with respect to the influence of vertical mixing on the surface biological O2 inventory. We test the proposed method with an ocean observing system simulation experiment (OSSE) in which we compare N2 O-O2 /Ar and O2 /Ar-only gas flux estimates of NCP to the model-simulated true NCP in the Southern Ocean. Our proof-of-concept simulations show that the N2 O-O2 /Ar tracer significantly improves NCP estimates when/where vertical mixing is important. Key Points Vertical mixing introduces significant errors in O2 /Ar-NCP estimatesModel results show that a composite N2 O-O2 /Ar tracer improves NCP estimates ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84921781695&doi=10.1002%2f2014GL062040&partnerID=40&md5=60b579e3d6de938980beadd54b411ad5
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6697
Appears in Collections: 气候减缓与适应
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作者单位: Division of Earth and Ocean Sciences, Nicholas School of the Environment, Duke University, Durham, NC, United States
Recommended Citation:
Cassar N.,Nevison C.D.,Manizza M.. Correcting oceanic O<inf>2</inf>/Ar-net community production estimates for vertical mixing using N<inf>2</inf>O observations[J]. Geophysical Research Letters,2014-01-01,41(24).