DOI: 10.1002/2017JC013525
Scopus记录号: 2-s2.0-85045916529
论文题名: Turbulence Scaling Comparisons in the Ocean Surface Boundary Layer
作者: Esters L. ; Breivik Ø. ; Landwehr S. ; ten Doeschate A. ; Sutherland G. ; Christensen K.H. ; Bidlot J.-R. ; Ward B.
刊名: Journal of Geophysical Research: Oceans
ISSN: 21699275
出版年: 2018
卷: 123, 期: 3 起始页码: 2172
结束页码: 2191
语种: 英语
英文关键词: scaling
; turbulence
; upper ocean
Scopus关键词: air-ice interaction
; atmosphere-ocean system
; boundary layer
; breaking wave
; buoyancy forcing
; comparative study
; energy dissipation
; flux measurement
; kinetic energy
; mixing ratio
; open ocean
; profiler
; scale effect
; sea surface
; significant wave height
; turbulence
; upper ocean
; Atlantic Ocean
英文摘要: Direct observations of the dissipation rate of turbulent kinetic energy, ϵ, under open ocean conditions are limited. Consequently, our understanding of what chiefly controls dissipation in the open ocean, and its functional form with depth, is poorly constrained. In this study, we report direct open ocean measurements of ϵ from the Air-Sea Interaction Profiler (ASIP) collected during five different cruises in the Atlantic Ocean. We then combine these data with ocean-atmosphere flux measurements and wave information in order to evaluate existing turbulence scaling theories under a diverse set of open ocean conditions. Our results do not support the presence of a “breaking” or a “transition layer,” which has been previously suggested. Instead, ϵ decays as |z|-1.29 over the depth interval, which was previously defined as “transition layer,” and as |z|-1.15 over the mixing layer. This depth dependency does not significantly vary between nonbreaking or breaking wave conditions. A scaling relationship based on the friction velocity, the wave age, and the significant wave height describes the observations best for daytime conditions. For conditions during which convection is important, it is necessary to take buoyancy forcing into account. © 2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114391
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: AirSea Laboratory, School of Physics and Ryan Institute, National University of Ireland, Galway, Galway, Ireland; Norwegian Meteorological Institute, Bergen, Norway; Norwegian Meteorological Institute, Oslo, Norway; Department of Mathematics, University of Oslo, Oslo, Norway; European Center for Medium Range Weather Forecasts, Shinfield Park, United Kingdom
Recommended Citation:
Esters L.,Breivik Ø.,Landwehr S.,et al. Turbulence Scaling Comparisons in the Ocean Surface Boundary Layer[J]. Journal of Geophysical Research: Oceans,2018-01-01,123(3)