DOI: 10.1002/2013GB004743
Scopus记录号: 2-s2.0-84895775169
论文题名: Global assessment of ocean carbon export by combining satellite observations and food-web models
作者: Siegel D ; A ; , Buesseler K ; O ; , Doney S ; C ; , Sailley S ; F ; , Behrenfeld M ; J ; , Boyd P ; W
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2014
卷: 28, 期: 3 起始页码: 181
结束页码: 196
语种: 英语
英文关键词: biological pump
; carbon cycle
; carbon export
; food webs
; remote sensing
Scopus关键词: Digital storage
; Efficiency
; Oceanography
; Remote sensing
; Biological pumps
; Carbon cycles
; Carbon export
; Food webs
; Global carbon cycle
; Net primary production
; Particle size spectra
; Satellite observations
; Carbon
; carbon cycle
; food web
; global change
; net primary production
; particle size
; remote sensing
; satellite data
; zooplankton
; algae
英文摘要: The export of organic carbon from the surface ocean by sinking particles is an important, yet highly uncertain, component of the global carbon cycle. Here we introduce a mechanistic assessment of the global ocean carbon export using satellite observations, including determinations of net primary production and the slope of the particle size spectrum, to drive a food-web model that estimates the production of sinking zooplankton feces and algal aggregates comprising the sinking particle flux at the base of the euphotic zone. The synthesis of observations and models reveals fundamentally different and ecologically consistent regional-scale patterns in export and export efficiency not found in previous global carbon export assessments. The model reproduces regional-scale particle export field observations and predicts a climatological mean global carbon export from the euphotic zone of ~6 Pg C yr-1. Global export estimates show small variation (typically<10%) to factor of 2 changes in model parameter values. The model is also robust to the choices of the satellite data products used and enables interannual changes to be quantified. The present synthesis of observations and models provides a path for quantifying the ocean's biological pump. Key Points Global ocean carbon export is assessed using satellite observations Reproduces field observations and predicts sensible patterns in export efficiency Decadal-scale trends are found in global export efficiency ©2014. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77488
Appears in Collections: 气候变化事实与影响
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作者单位: Earth Research Institute, Department of Geography, University of California, Santa Barbara, CA, United States; Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA, United States; TMTF Plymouth Marine Laboratory, Plymouth, United Kingdom; Department of Botany and Plant Pathology, Oregon State University, Corvallis, OR, United States; Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS, Australia
Recommended Citation:
Siegel D,A,, Buesseler K,et al. Global assessment of ocean carbon export by combining satellite observations and food-web models[J]. Global Biogeochemical Cycles,2014-01-01,28(3)