DOI: 10.1002/2014GL061637
论文题名: Observations and numerical simulations of large-eddy circulation in the ocean surface mixed layer
作者: Sundermeyer M.A. ; Skyllingstad E. ; Ledwell J.R. ; Concannon B. ; Terray E.A. ; Birch D. ; Pierce S.D. ; Cervantes B.
刊名: Geophysical Research Letters
ISSN: 0094-9622
EISSN: 1944-9353
出版年: 2014
卷: 41, 期: 21 起始页码: 7584
结束页码: 7590
语种: 英语
英文关键词: fluorescent dye
; large-eddy circulation
; lidar
; numerical model
; ocean surface mixed layer
Scopus关键词: Computational fluid dynamics
; Large eddy simulation
; Numerical models
; Optical radar
; Density gradients
; Eddy simulation
; Eddy structures
; Fluorescent dyes
; Large aspect ratio
; Mixed layer depths
; Near-surface currents
; Ocean surfaces
; Aspect ratio
; climate forcing
; large eddy simulation
; lidar
; mixed layer
; oceanic circulation
; surface layer
; wind field
英文摘要: Two near-surface dye releases were mapped on scales of minutes to hours temporally, meters to order 1 km horizontally, and 1-20 m vertically using a scanning, depth-resolving airborne lidar. In both cases, dye evolved into a series of rolls with their major axes approximately aligned with the wind and/or near-surface current. In both cases, roll spacing was also of order 5-10 times the mixed layer depth, considerably larger than the 1-2 aspect ratio expected for Langmuir cells. Numerical large-eddy simulations under similar forcing showed similar features, even without Stokes drift forcing. In one case, inertial shear driven by light winds induced large aspect ratio large-eddy circulation. In the second, a preexisting lateral mixed layer density gradient provided the dominant forcing. In both cases, the growth of the large-eddy structures and the strength of the resulting dispersion were highly dependent on the type of forcing. Key Points Ocean dye releases were mapped using scanning, depth-resolving airborne lidarDye evolved into rolls aligned with the wind and/or near-surface currentLarge-eddy simulations showed similar features without Stokes drift forcing ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84912123123&doi=10.1002%2f2014GL061637&partnerID=40&md5=ddd9e897f562563c14dbe39981a69b7d
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6886
Appears in Collections: 气候减缓与适应
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作者单位: School for Marine Science and Technology, University of Massachusetts Dartmouth, North Dartmouth, MA, United States
Recommended Citation:
Sundermeyer M.A.,Skyllingstad E.,Ledwell J.R.,et al. Observations and numerical simulations of large-eddy circulation in the ocean surface mixed layer[J]. Geophysical Research Letters,2014-01-01,41(21).