DOI: 10.1002/grl.50219
论文题名: An inverse relationship between production and export efficiency in the Southern Ocean
作者: Maiti K. ; Charette M.A. ; Buesseler K.O. ; Kahru M.
刊名: Geophysical Research Letters
ISSN: 0094-9167
EISSN: 1944-8898
出版年: 2013
卷: 40, 期: 8 起始页码: 1557
结束页码: 1561
语种: 英语
英文关键词: biological pump
; carbon export
; Southern Ocean
Scopus关键词: Biological pumps
; Carbon export
; Comprehensive analysis
; Drifting sediment traps
; Increasing production
; Inverse relationship
; Southern ocean
; Surface productivity
; Carbon
; Efficiency
; Estimation
; Oceanography
; algorithm
; carbon flux
; data acquisition
; drift behavior
; estimation method
; flow modeling
; nutrient dynamics
; parameterization
; sediment trap
; Southern Ocean
英文摘要: In the past two decades, a number of studies have been carried out in the Southern Ocean to look at export production using drifting sediment traps and thorium-234 based measurements, which allows us to reexamine the validity of using the existing relationships between production, export efficiency, and temperature to derive satellite-based carbon export estimates in this region. Comparisons of in situ export rates with modeled rates indicate a two to fourfold overestimation of export production by existing models. Comprehensive analysis of in situ data indicates two major reasons for this difference: (i) in situ data indicate a trend of decreasing export efficiency with increasing production which is contrary to existing export models and (ii) the export efficiencies appear to be less sensitive to temperature in this region compared to the global estimates used in the existing models. The most important implication of these observations is that the simplest models of export, which predict increase in carbon flux with increasing surface productivity, may require additional parameters, different weighing of existing parameters, or separate algorithms for different oceanic regimes. Key Points reduced estimate of biological export in the Southern Ocean Inverse relationship between primary production and export Revised relation between production and export in Sothern Ocean. ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84877945388&doi=10.1002%2fgrl.50219&partnerID=40&md5=a0608067089924566a5c154a32a7f4be
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6431
Appears in Collections: 气候减缓与适应
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作者单位: Department of Oceanography and Coastal Studies, Louisiana State University, Baton Rouge LA 70810, United States
Recommended Citation:
Maiti K.,Charette M.A.,Buesseler K.O.,et al. An inverse relationship between production and export efficiency in the Southern Ocean[J]. Geophysical Research Letters,2013-01-01,40(8).