DOI: 10.1175/JCLI-D-13-00583.1
Scopus记录号: 2-s2.0-84900564549
论文题名: Impacts of parameterized langmuir turbulence and nonbreaking wave mixing in global climate simulations
作者: Fan Y. ; Griffies S.M.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2014
卷: 27, 期: 12 起始页码: 4752
结束页码: 4775
语种: 英语
Scopus关键词: Atmospheric thermodynamics
; Climate models
; Mixing
; Ocean currents
; Reynolds number
; Turbulence
; Water waves
; Antarctic Circumpolar Currents
; Atlantic meridional overturning circulations
; Global climate simulations
; Mixed layer deepening
; Stratification effects
; Turbulence enhancements
; Wind wave
; Winter mixed layer depth
; Parameterization
; atmospheric wave
; boundary layer
; climate modeling
; computer simulation
; global climate
; meridional circulation
; mesoscale eddy
; mixed layer
; ocean wave
; overturn
; parameterization
; shoaling wave
; turbulence
; turbulent mixing
; upper ocean
; wind wave
; Antarctic Circumpolar Current
; Atlantic Ocean
; Labrador Sea
; Ross Sea
; Southern Ocean
; Weddell Sea
英文摘要: The impacts of parameterized upper-ocean wave mixing on global climate simulations are assessed through modification to Large et al.'s K-profile ocean boundary layer parameterization (KPP) in a coupled atmosphere- ocean-wave global climate model. The authors consider three parameterizations and focus on impacts to highlatitude oceanmixed layer depths and related ocean diagnostics. TheMcWilliams and Sullivan parameterization (MS2000) adds a Langmuir turbulence enhancement to the nonlocal component of KPP. It is found that the Langmuir turbulence-inducedmixing provided by this parameterization is too strong in winter, producing overly deep mixed layers, and of minimal impact in summer. The later Smyth et al. parameterization modifiesMS2000 by adding a stratification effect to restrain the turbulence enhancement under weak stratification conditions (e.g., winter) and to magnify the enhancement under strong stratification conditions. The Smyth et al. scheme improves the simulated winter mixed layer depth in the simulations herein, with mixed layer deepening in the Labrador Sea and shoaling in the Weddell and Ross Seas. Enhanced vertical mixing through parameterized Langmuir turbulence, coupled with enhanced lateral transport associated with parameterized mesoscale and submesoscale eddies, is found to be a key element for improving mixed layer simulations. Secondary impacts include strengthening the Atlantic meridional overturning circulation and reducing the Antarctic Circumpolar Current. The Qiao et al. nonbreaking wave parameterization is the third scheme assessed here. It adds a wave orbital velocity to the Reynolds stress calculation and provides the strongest summer mixed layer deepening in the Southern Ocean among the three experiments, but with weak impacts during winter. © 2014 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51466
Appears in Collections: 气候变化事实与影响
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作者单位: Princeton University, United States; NOAA/Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States
Recommended Citation:
Fan Y.,Griffies S.M.. Impacts of parameterized langmuir turbulence and nonbreaking wave mixing in global climate simulations[J]. Journal of Climate,2014-01-01,27(12)