DOI: 10.1002/2014GL059707
论文题名: Changes in dominant mixing length scales as a driver of subpolar phytoplankton bloom initiation in the North Atlantic
作者: Brody S.R. ; Lozier M.S.
刊名: Geophysical Research Letters
ISSN: 0094-10098
EISSN: 1944-9829
出版年: 2014
卷: 41, 期: 9 起始页码: 3197
结束页码: 3203
语种: 英语
英文关键词: bloom initiation
; critical depth hypothesis
; phytoplankton
; turbulence
Scopus关键词: Isomers
; Turbulence
; bloom initiation
; Critical depth
; Current theories
; Grazing pressure
; North Atlantic
; Phytoplankton bloom
; Seasonal thermocline
; Subpolar North Atlantic
; Phytoplankton
; heat flux
; mixing
; phytoplankton
; population outbreak
; thermocline
; turbulence
; wind stress
; Atlantic Ocean
; Atlantic Ocean (North)
英文摘要: Subpolar phytoplankton blooms have traditionally been attributed to changes in the depth of the ocean's seasonal thermocline: as the upper ocean warms and stratifies in the spring, phytoplankton reside within increasingly shallow depths where they experience higher light levels, and, as a result, begin to bloom. Recent studies have challenged this explanation, proposing instead that bloom initiation is driven either by the onset of positive heat fluxes, decreases in wind strength, decreases in grazing pressure, or by eddy-induced stratification. We compare traditional and recent ideas of bloom initiation and present a new argument that attributes the initiation to a decrease in the dominant mixing length scales in the upper ocean. From an examination of data across the subpolar North Atlantic, we find that decreases in this length scale are a better predictor of bloom initiation than current theories, thus providing a new explanation of bloom dynamics in a one-dimensional framework. Key Points We compare and synthesize current theories of bloom initiation We develop a mixing length scale to predict the initiation of the bloom Subpolar blooms are driven by a shift from buoyancy- to wind-driven mixing © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84901945842&doi=10.1002%2f2014GL059707&partnerID=40&md5=6bd413bd00718950fc49ff5e15b01235
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7362
Appears in Collections: 气候减缓与适应
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作者单位: Division of Earth and Ocean Science, Duke University, Durham, NC, United States
Recommended Citation:
Brody S.R.,Lozier M.S.. Changes in dominant mixing length scales as a driver of subpolar phytoplankton bloom initiation in the North Atlantic[J]. Geophysical Research Letters,2014-01-01,41(9).