DOI: 10.1002/2016GB005614
Scopus记录号: 2-s2.0-85040189826
论文题名: Vertical Distributions of Coccolithophores, PIC, POC, Biogenic Silica, and Chlorophyll a Throughout the Global Ocean
作者: Balch W ; M ; , Bowler B ; C ; , Drapeau D ; T ; , Lubelczyk L ; C ; , Lyczkowski E
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2018
卷: 32, 期: 1 起始页码: 2
结束页码: 17
语种: 英语
英文关键词: biogeochemical cycles, processes, and modeling
; biomineralization
; carbon cycling
; phytoplankton
; remote sensing
Scopus关键词: biogeochemical cycle
; biomineralization
; carbon cycle
; chlorophyll a
; coccolith
; concentration (composition)
; euphotic zone
; global ocean
; ocean color
; phytoplankton
; remote sensing
; sensor
; silica
; surface layer
; vertical distribution
; water depth
; Bacillariophyta
; Haptophyceae
英文摘要: Coccolithophores are a critical component of global biogeochemistry, export fluxes, and seawater optical properties. We derive globally significant relationships to estimate integrated coccolithophore and coccolith concentrations as well as integrated concentrations of particulate inorganic carbon (PIC) from their respective surface concentration. We also examine surface versus integral relationships for other biogeochemical variables contributed by all phytoplankton (e.g., chlorophyll a and particulate organic carbon) or diatoms (biogenic silica). Integrals are calculated using both 100 m integrals and euphotic zone integrals (depth of 1% surface photosynthetically available radiation). Surface concentrations are parameterized in either volumetric units (e.g., m−3) or values integrated over the top optical depth. Various relationships between surface concentrations and integrated values demonstrate that when surface concentrations are above a specific threshold, the vertical distribution of the property is biased to the surface layer, and when surface concentrations are below a specific threshold, the vertical distributions of the properties are biased to subsurface maxima. Results also show a highly predictable decrease in explained-variance as vertical distributions become more vertically heterogeneous. These relationships have fundamental utility for extrapolating surface ocean color remote sensing measurements to 100 m depth or to the base of the euphotic zone, well beyond the depths of detection for passive ocean color remote sensors. Greatest integrated concentrations of PIC, coccoliths, and coccolithophores are found when there is moderate stratification at the base of the euphotic zone. ©2017. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77674
Appears in Collections: 气候变化事实与影响
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作者单位: Bigelow Laboratory for Ocean Sciences, East Boothbay, ME, United States
Recommended Citation:
Balch W,M,, Bowler B,et al. Vertical Distributions of Coccolithophores, PIC, POC, Biogenic Silica, and Chlorophyll a Throughout the Global Ocean[J]. Global Biogeochemical Cycles,2018-01-01,32(1)