DOI: 10.1002/2016GL069973
论文题名: Investigation into the impact of storms on sustaining summer primary productivity in the Sub-Antarctic Ocean
作者: Nicholson S.-A. ; Lévy M. ; Llort J. ; Swart S. ; Monteiro P.M.S.
刊名: Geophysical Research Letters
ISSN: 0094-8677
EISSN: 1944-8408
出版年: 2016
卷: 43, 期: 17 起始页码: 9192
结束页码: 9199
语种: 英语
英文关键词: dissolved iron
; primary production
; storms
; summer
; sustained
; vertical mixing
Scopus关键词: Biogeochemistry
; Budget control
; Mixing
; Oceanography
; Phytoplankton
; Storms
; Dissolved iron
; Primary production
; Summer
; Sustained
; Vertical mixing
; Iron
; biogeochemical cycle
; diffusivity
; entrainment
; iron
; phytomass
; phytoplankton
; primary production
; storm damage
; subantarctic region
; summer
; turbulence
; vertical mixing
; Southern Ocean
英文摘要: In the Sub-Antarctic Ocean elevated phytoplankton biomass persists through summer at a time when productivity is expected to be low due to iron limitation. Biological iron recycling has been shown to support summer biomass. In addition, we investigate an iron supply mechanism previously unaccounted for in iron budget studies. Using a 1-D biogeochemical model, we show how storm-driven mixing provides relief from phytoplankton iron limitation through the entrainment of iron beneath the productive layer. This effect is significant when a mixing transition layer of strong diffusivities (kz > 10−4 m2 s−1) is present beneath the surface-mixing layer. Such subsurface mixing has been shown to arise from interactions between turbulent ocean dynamics and storm-driven inertial motions. The addition of intraseasonal mixing yielded increases of up to 60% in summer primary production. These results stress the need to acquire observations of subsurface mixing and to develop the appropriate parameterizations of such phenomena for ocean-biogeochemical models. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84987616118&doi=10.1002%2f2016GL069973&partnerID=40&md5=e3aeaf42f6baac753f0f25483e65e389
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9640
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: Sorbonne Universités (UPMC, Paris 6)/CNRS/UPMC/IRD/MNHN, Laboratoire d'Océanographie et du Climat (LOCEAN), Institut Pierre Simon Laplace (IPSL), Paris, France
Recommended Citation:
Nicholson S.-A.,Lévy M.,Llort J.,et al. Investigation into the impact of storms on sustaining summer primary productivity in the Sub-Antarctic Ocean[J]. Geophysical Research Letters,2016-01-01,43(17).