DOI: 10.1002/2013GL059149
论文题名: Wind stress and near-surface shear in the equatorial Atlantic Ocean
作者: Wenegrat J.O. ; McPhaden M.J. ; Lien R.-C.
刊名: Geophysical Research Letters
ISSN: 0094-10372
EISSN: 1944-10103
出版年: 2014
卷: 41, 期: 4 起始页码: 1226
结束页码: 1231
语种: 英语
英文关键词: eddy viscosity
Scopus关键词: Atlantic Ocean
; Biased estimates
; Eddy viscosity
; Eddy viscosity model
; Stress-dependent
; Surface shear stress
; Time varying
; Turbulent momentum
; Parameterization
; Wind stress
; Shear flow
; air-sea interaction
; boundary condition
; data set
; numerical model
; parameterization
; salinity
; temperature effect
; viscosity
; wind velocity
; Atlantic Ocean
; Atlantic Ocean (Equatorial)
英文摘要: The upper ocean response to wind stress is examined using 8 months of unique near-surface moored velocity, temperature, and salinity data at 0°N, 23°W in the equatorial Atlantic. The effects of wind stress and shear on the time-varying eddy viscosity are inferred using the surface shear-stress boundary condition. Parameterizations of eddy viscosity as a function of wind stress and shear versus wind stress alone are then examined. In principle, eddy viscosity should be proportional to the inverse shear, but how it is represented implicitly or explicitly can affect estimates of the near-surface flow field. This result may explain some discrepancies that have arisen from using parameterizations based only on wind stress to characterize the effects of turbulent momentum mixing. Key Points Near-surface shear must be considered in parameterizations of eddy viscosity Wind stress-dependent eddy viscosities may result in biased estimates of shear Eddy viscosity models that explicitly include the mean shear are proposed ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84897887379&doi=10.1002%2f2013GL059149&partnerID=40&md5=b617218924e2a679568d43e5a7f2e41f
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7636
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: School of Oceanography, University of Washington, Seattle WA, United States
Recommended Citation:
Wenegrat J.O.,McPhaden M.J.,Lien R.-C.. Wind stress and near-surface shear in the equatorial Atlantic Ocean[J]. Geophysical Research Letters,2014-01-01,41(4).