globalchange  > 气候减缓与适应
DOI: 10.1002/2017JG004235
Scopus记录号: 2-s2.0-85046540051
论文题名:
A New Approach to Estimating Coccolithophore Calcification Rates From Space
作者: Hopkins J.; Balch W.M.
刊名: Journal of Geophysical Research: Biogeosciences
ISSN: 21698953
出版年: 2018
卷: 123, 期:5
起始页码: 1447
结束页码: 1459
语种: 英语
英文关键词: calcification ; coccolithophores ; particulate inorganic carbon ; remote sensing
Scopus关键词: alkalinity ; biological pump ; calcification ; calcium carbonate ; carbon balance ; coccolith ; complexity ; estimation method ; euphotic zone ; inorganic carbon ; ocean color ; parameterization ; physiology ; remote sensing ; spatiotemporal analysis ; Haptophyceae
英文摘要: The production and ultimate fate of calcium carbonate in the global ocean has implications for the efficiency of the biological carbon and alkalinity pumps. Historically, sediment trap flux data and/or mass balance equations have been used to estimate the rate of particulate inorganic carbon production in the ocean. More recently, satellite data have been used to provide a more comprehensive global overview of this important biogeochemical process based on relationships determined from multilinear regression of measured calcification rates against a number of measurable variables. Here we describe a simple model to estimate calcification rate based around elements of coccolithophore physiology that can be easily parametrized with satellite ocean color data. The model output conforms to our understanding of the spatial and temporal distribution of coccolithophores and performs relatively well at reproducing global rates that are of the correct order of magnitude, while capturing the variability in such a complex, natural process when compared to field calcification rate measurements (slope = 0.98; R2 = 0.28; p < 0.05; RMSE = 0.53 mg C · m−3 · day−1). Average, global, euphotic zone depth-integrated calcification rate is estimated to be 1.42 ± 1.69 Pg particulate inorganic carbon/year with the oceanic gyres contributing the greatest influence. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113957
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作者单位: Bigelow Laboratory for Ocean Sciences, East Boothbay, ME, United States

Recommended Citation:
Hopkins J.,Balch W.M.. A New Approach to Estimating Coccolithophore Calcification Rates From Space[J]. Journal of Geophysical Research: Biogeosciences,2018-01-01,123(5)
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