DOI: 10.1002/gbc.20074
Scopus记录号: 2-s2.0-84883144709
论文题名: Combined constraints on global ocean primary production using observations and models
作者: Buitenhuis E ; T ; , Hashioka T ; , Quéré C ; L
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2013
卷: 27, 期: 3 起始页码: 847
结束页码: 858
语种: 英语
英文关键词: dynamic green ocean model (DGOM)
; phytoplankton acclimation
Scopus关键词: Biogeochemical cycle
; Combined constraints
; Confidence interval
; Dynamic representation
; Green oceans
; Interannual variability
; Model and observation
; Net primary production
; Biogeochemistry
; C (programming language)
; Climate change
; Photosynthesis
; Uncertainty analysis
; Oceanography
; acclimation
; annual variation
; biogeochemical cycle
; chlorophyll
; geographical region
; global ocean
; numerical model
; observational method
; photosynthesis
; primary production
英文摘要: Primary production is at the base of the marine food web and plays a central role for global biogeochemical cycles. Yet global ocean primary production is known to only a factor of ~2, with previous estimates ranging from 38 to 65 Pg C yr-1 and no formal uncertainty analysis. Here, we present an improved global ocean biogeochemistry model that includes a mechanistic representation of photosynthesis and a new observational database of net primary production (NPP) in the ocean. We combine the model and observations to constrain particulate NPP in the ocean with statistical metrics. The PlankTOM5.3 model includes a new photosynthesis formulation with a dynamic representation of iron-light colimitation, which leads to a considerable improvement of the interannual variability of surface chlorophyll. The database includes a consistent set of 50,050 measurements of 14C primary production. The model best reproduces observations when global NPP is 58 ± 7 Pg C yr-1, with a most probable value of 56 Pg C yr -1. The most probable value is robust to the model used. The uncertainty represents 95% confidence intervals. It considers all random errors in the model and observations, but not potential biases in the observations. We show that tropical regions (23°S-23°N) contribute half of the global NPP, while NPPs in the Northern and Southern Hemispheres are approximately equal in spite of the larger ocean area in the South. Key Points Global ocean particulate net primary production is estimated at 58 +- 7 Pg C y-1A dynamic photosynthesis model improves modelled Chl interannual variabilityA statistical method to derive a global rate from point observations and models ©2013. 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/77579
Appears in Collections: 气候变化事实与影响
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作者单位: Tyndall Centre for Climate Change Research, School of Environmental Sciences, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, United Kingdom; Graduate School of Environmental Earth Science, Hokkaido University, Sapporo, Japan; Core Research for Evolutional Science and Technology, Japan Science and Technology Agency, Tokyo, Japan
Recommended Citation:
Buitenhuis E,T,, Hashioka T,et al. Combined constraints on global ocean primary production using observations and models[J]. Global Biogeochemical Cycles,2013-01-01,27(3)