DOI: 10.1002/grl.50998
论文题名: Critical role for mesoscale eddy diffusion in supplying oxygen to hypoxic ocean waters
作者: Gnanadesikan A. ; Bianchi D. ; Pradal M.-A.
刊名: Geophysical Research Letters
ISSN: 0094-8518
EISSN: 1944-8249
出版年: 2013
卷: 40, 期: 19 起始页码: 5194
结束页码: 5198
语种: 英语
英文关键词: earth system model
; hypoxia
; mesoscale diffusion
; remineralization
; satellite productivity
Scopus关键词: Current generation
; Earth system model
; hypoxia
; Hypoxic water
; Mesoscale
; Mesoscale eddy
; Oxygen consumption
; Remineralization
; Computer simulation
; Estimation
; Oceanography
; Diffusion
; color
; diffusion
; eddy
; hypoxia
; numerical model
; oxygen
; remineralization
; satellite imagery
; uncertainty analysis
英文摘要: Estimates of the oceanic lateral eddy diffusion coefficient A redi vary by more than an order of magnitude, ranging from less than a few hundred m2/s to thousands of m2/s. This uncertainty has first-order implications for the intensity of oceanic hypoxia, which is poorly simulated by the current generation of Earth System Models. Using satellite-based estimate of oxygen consumption in hypoxic waters to estimate the required diffusion coefficient for these waters gives a value of order 1000 m2/s. Varying Aredi across a suite of Earth System Models yields a broadly consistent result given a thermocline diapycnal diffusion coefficient of 1 × 10-5 m2/s. Key Points Intensity of oceanic hypoxia is controlled by the lateral diffusion coefficient. Lateral diffusion coefficient is poorly constrained. A new estimate of this coefficient is made using ocean color. ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84885351887&doi=10.1002%2fgrl.50998&partnerID=40&md5=f15431b409d92f45ea0f60bd08c71e02
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5782
Appears in Collections: 气候减缓与适应
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作者单位: Department of Earth and Planetary Sciences, John Hopkins University, Olin Hall, 3400 N. Charles St., Baltimore, MD 21218, United States
Recommended Citation:
Gnanadesikan A.,Bianchi D.,Pradal M.-A.. Critical role for mesoscale eddy diffusion in supplying oxygen to hypoxic ocean waters[J]. Geophysical Research Letters,2013-01-01,40(19).