气候变化领域集成服务门户(CCPortal): Vertical Distributions of Coccolithophores, PIC, POC, Biogenic Silica, and Chlorophyll a Throughout the Global Ocean

CCPortal

DOI	10.1002/2016GB005614
	Vertical Distributions of Coccolithophores, PIC, POC, Biogenic Silica, and Chlorophyll a Throughout the Global Ocean
	Balch W.M.; Bowler B.C.; Drapeau D.T.; Lubelczyk L.C.; Lyczkowski E.
发表日期	2018
ISSN	0886-6236
EISSN	1944-9224
起始页码	2
结束页码	17
卷号	32 期号:1
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.
英文关键词	biogeochemical cycles, processes, and modeling; biomineralization; carbon cycling; phytoplankton; remote sensing
语种	英语
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
来源期刊	Global Biogeochemical Cycles
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/129870
作者单位	Bigelow Laboratory for Ocean Sciences, East Boothbay, ME, United States
推荐引用方式 GB/T 7714	Balch W.M.,Bowler B.C.,Drapeau D.T.,et al. Vertical Distributions of Coccolithophores, PIC, POC, Biogenic Silica, and Chlorophyll a Throughout the Global Ocean[J],2018,32(1).
APA	Balch W.M.,Bowler B.C.,Drapeau D.T.,Lubelczyk L.C.,&Lyczkowski E..(2018).Vertical Distributions of Coccolithophores, PIC, POC, Biogenic Silica, and Chlorophyll a Throughout the Global Ocean.Global Biogeochemical Cycles,32(1).
MLA	Balch W.M.,et al."Vertical Distributions of Coccolithophores, PIC, POC, Biogenic Silica, and Chlorophyll a Throughout the Global Ocean".Global Biogeochemical Cycles 32.1(2018).