DOI: 10.1175/JCLI-D-14-00432.1
Scopus记录号: 2-s2.0-84926040302
论文题名: Energy flux into internal lee waves: Sensitivity to future climate changes using linear theory and a climate model
作者: Melet A. ; Hallberg R. ; Adcroft A. ; Nikurashin M. ; Legg S.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期: 6 起始页码: 2365
结束页码: 2384
语种: 英语
Scopus关键词: Climate change
; Ocean currents
; Oceanography
; Parameterization
; Potential energy
; Velocity
; Atmosphere modeling
; Bottom current
; Eddies
; Geophysical fluid dynamics laboratories
; Geostrophic flow
; Geostrophic velocity fields
; Mountain wave
; Ocean dynamics
; Climate models
; annual cycle
; climate change
; climate modeling
; flow velocity
; fluid dynamics
; geostrophic flow
; lee wave
; mesoscale meteorology
; parameterization
; potential energy
; Southern Ocean
英文摘要: Internal lee waves generated by geostrophic flows over rough topography are thought to be a significant energy sink for eddies and energy source for deep ocean mixing. The sensitivity of the energy flux into lee waves from preindustrial, present, and possible future climate conditions is explored in this study using linear theory. The bottom stratification and geostrophic velocity fields needed for the calculation of the energy flux into lee waves are provided by Geophysical Fluid Dynamics Laboratory's global coupled ocean-ice-atmosphere model, CM2G. The unresolved mesoscale eddy energy is parameterized as a function of the large-scale available potential energy. Simulations using historical and representative concentration pathway (RCP) scenarios were performed over the 1861-2200 period. The diagnostics herein suggest a decrease of the global energy flux into lee waves on the order of 20% from preindustrial to future climate conditions under the RCP8.5 scenario. In the Southern Ocean, the energy flux into lee waves exhibits a clear annual cycle with maximum values in austral winter. The long-term decrease of the global energy flux into lee waves and the annual cycle of the energy flux in the Southern Ocean are mostly due to changes in bottom velocity. © 2015 American Meteorological Society. 资助项目: NOAA, National Science Foundation
; NSF, National Science Foundation
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50549
Appears in Collections: 气候变化事实与影响
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作者单位: Princeton University, Princeton, NJ, United States; LEGOS, UMR5566, CNES, CNRS, IRD, Université Paul Sabatier, Toulouse, France; NOAA/Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States; NOAA/Geophysical Fluid Dynamics Laboratory, Princeton University, Princeton, NJ, United States; Institute for Marine and Antarctic Studies, University of Tasmania, ARC Centre of Excellence for Climate System Science, Hobart, TAS, Australia
Recommended Citation:
Melet A.,Hallberg R.,Adcroft A.,et al. Energy flux into internal lee waves: Sensitivity to future climate changes using linear theory and a climate model[J]. Journal of Climate,2015-01-01,28(6)